---
_id: '62814'
abstract:
- lang: eng
  text: Porous carbons are prominent electrode materials in energy storage applications
    such as supercapacitors. However, rational materials development is hampered by
    difficulties in interpreting electrochemical impedance spectra (EIS) and drawing
    conclusions about promising aspects of device improvement. Here, we characterized
    electrodes consisting of activated carbon with polyacrylic acid binder in four
    different concentrations of sulfuric acid, using cyclic voltammetry and electrochemical
    impedance spectroscopy. Both datasets were evaluated with simple equivalent circuits
    and comparatively analyzed. Conductivity of the electrolyte was independently
    measured. Cyclic voltammograms (CV) show larger resistance and capacitance at
    low scan rates. Resistances obtained from EIS are in good agreement with those
    obtained by cyclic voltammograms particularly at high scan rates. The comparison
    against specific electrolyte resistance can reveal whether resistances within
    the solid electrode architecture or resistances within the electrolyte, partially
    confined by pores, are the dominant cause of increased resistance at low scan
    rate. Comparison between CV and EIS points to the main electrode capacitance being
    described by a constant phase element (CPE) used to fit the low-frequency region
    of EIS.
author:
- first_name: Sebastian
  full_name: Reinke, Sebastian
  id: '117727'
  last_name: Reinke
- first_name: Vera
  full_name: Khamitsevich, Vera
  last_name: Khamitsevich
- first_name: Julia
  full_name: Linnemann, Julia
  id: '116779'
  last_name: Linnemann
  orcid: 0000-0001-6883-5424
citation:
  ama: 'Reinke S, Khamitsevich V, Linnemann J. Complementary Analysis of Cyclic Voltammograms
    and Impedance Spectra of Porous Carbon Electrodes. In: <i>2024 International Workshop
    on Impedance Spectroscopy (IWIS)</i>. IEEE; 2025. doi:<a href="https://doi.org/10.1109/iwis63047.2024.10847115">10.1109/iwis63047.2024.10847115</a>'
  apa: Reinke, S., Khamitsevich, V., &#38; Linnemann, J. (2025). Complementary Analysis
    of Cyclic Voltammograms and Impedance Spectra of Porous Carbon Electrodes. <i>2024
    International Workshop on Impedance Spectroscopy (IWIS)</i>. <a href="https://doi.org/10.1109/iwis63047.2024.10847115">https://doi.org/10.1109/iwis63047.2024.10847115</a>
  bibtex: '@inproceedings{Reinke_Khamitsevich_Linnemann_2025, title={Complementary
    Analysis of Cyclic Voltammograms and Impedance Spectra of Porous Carbon Electrodes},
    DOI={<a href="https://doi.org/10.1109/iwis63047.2024.10847115">10.1109/iwis63047.2024.10847115</a>},
    booktitle={2024 International Workshop on Impedance Spectroscopy (IWIS)}, publisher={IEEE},
    author={Reinke, Sebastian and Khamitsevich, Vera and Linnemann, Julia}, year={2025}
    }'
  chicago: Reinke, Sebastian, Vera Khamitsevich, and Julia Linnemann. “Complementary
    Analysis of Cyclic Voltammograms and Impedance Spectra of Porous Carbon Electrodes.”
    In <i>2024 International Workshop on Impedance Spectroscopy (IWIS)</i>. IEEE,
    2025. <a href="https://doi.org/10.1109/iwis63047.2024.10847115">https://doi.org/10.1109/iwis63047.2024.10847115</a>.
  ieee: 'S. Reinke, V. Khamitsevich, and J. Linnemann, “Complementary Analysis of
    Cyclic Voltammograms and Impedance Spectra of Porous Carbon Electrodes,” 2025,
    doi: <a href="https://doi.org/10.1109/iwis63047.2024.10847115">10.1109/iwis63047.2024.10847115</a>.'
  mla: Reinke, Sebastian, et al. “Complementary Analysis of Cyclic Voltammograms and
    Impedance Spectra of Porous Carbon Electrodes.” <i>2024 International Workshop
    on Impedance Spectroscopy (IWIS)</i>, IEEE, 2025, doi:<a href="https://doi.org/10.1109/iwis63047.2024.10847115">10.1109/iwis63047.2024.10847115</a>.
  short: 'S. Reinke, V. Khamitsevich, J. Linnemann, in: 2024 International Workshop
    on Impedance Spectroscopy (IWIS), IEEE, 2025.'
date_created: 2025-12-03T16:06:09Z
date_updated: 2026-01-19T15:41:43Z
department:
- _id: '985'
doi: 10.1109/iwis63047.2024.10847115
extern: '1'
keyword:
- electrochemical impedance spectroscopy
- distorted cyclic voltammograms
- supercapacitors
- carbon
language:
- iso: eng
publication: 2024 International Workshop on Impedance Spectroscopy (IWIS)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Complementary Analysis of Cyclic Voltammograms and Impedance Spectra of Porous
  Carbon Electrodes
type: conference
user_id: '116779'
year: '2025'
...
---
_id: '63950'
abstract:
- lang: eng
  text: Sodium-ion batteries are at the forefront of new, sustainable energy systems
    required for the global energy transition. 23Na in situ solid-state nuclear magnetic
    resonance spectroscopy is capable of unraveling structures in working electrochemical
    cells during the charging and discharging processes. To evaluate its suitability
    for long-term studies, local sodium environments in sodium/sodium ion cells based
    on silicon carbonitride and hard carbon materials are tracked for up to 49 cycles
    (228.5?h). The formation of dendrites as well as the decay of a secondary metallic
    sodium species is observed, and local structures are analyzed up to the point
    of capacity degradation and cell failure. Initial points of cell breakdown are
    reflected in the NMR data by characteristic changes in signal intensities, whereas
    the degradation of the cells is reflected by a cease to periodic signal intensity
    fluctuations. Meanwhile, ex situ 23Na NMR spectra of the deactivated cells reveal
    a complex range of environments for sodium ions.
author:
- first_name: Sonja
  full_name: Egert, Sonja
  last_name: Egert
- first_name: Renuka
  full_name: Remesh, Renuka
  last_name: Remesh
- first_name: Agatha Clarissa
  full_name: Jusdi, Agatha Clarissa
  last_name: Jusdi
- first_name: Yushi
  full_name: Sugawara, Yushi
  last_name: Sugawara
- first_name: Konstantin
  full_name: Schutjajew, Konstantin
  last_name: Schutjajew
- first_name: Martin
  full_name: Oschatz, Martin
  last_name: Oschatz
- first_name: Gerd
  full_name: Buntkowsky, Gerd
  last_name: Buntkowsky
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
citation:
  ama: Egert S, Remesh R, Jusdi AC, et al. Long-Term Cycling Stability of Sodium/Sodium
    Ion Cells Probed by In Situ Solid-State NMR Spectroscopy. <i>Batteries &#38; Supercaps</i>.
    2025;n/a(n/a):e202500516. doi:<a href="https://doi.org/10.1002/batt.202500516">10.1002/batt.202500516</a>
  apa: Egert, S., Remesh, R., Jusdi, A. C., Sugawara, Y., Schutjajew, K., Oschatz,
    M., Buntkowsky, G., &#38; Gutmann, T. (2025). Long-Term Cycling Stability of Sodium/Sodium
    Ion Cells Probed by In Situ Solid-State NMR Spectroscopy. <i>Batteries &#38; Supercaps</i>,
    <i>n/a</i>(n/a), e202500516. <a href="https://doi.org/10.1002/batt.202500516">https://doi.org/10.1002/batt.202500516</a>
  bibtex: '@article{Egert_Remesh_Jusdi_Sugawara_Schutjajew_Oschatz_Buntkowsky_Gutmann_2025,
    title={Long-Term Cycling Stability of Sodium/Sodium Ion Cells Probed by In Situ
    Solid-State NMR Spectroscopy}, volume={n/a}, DOI={<a href="https://doi.org/10.1002/batt.202500516">10.1002/batt.202500516</a>},
    number={n/a}, journal={Batteries &#38; Supercaps}, publisher={John Wiley &#38;
    Sons, Ltd}, author={Egert, Sonja and Remesh, Renuka and Jusdi, Agatha Clarissa
    and Sugawara, Yushi and Schutjajew, Konstantin and Oschatz, Martin and Buntkowsky,
    Gerd and Gutmann, Torsten}, year={2025}, pages={e202500516} }'
  chicago: 'Egert, Sonja, Renuka Remesh, Agatha Clarissa Jusdi, Yushi Sugawara, Konstantin
    Schutjajew, Martin Oschatz, Gerd Buntkowsky, and Torsten Gutmann. “Long-Term Cycling
    Stability of Sodium/Sodium Ion Cells Probed by In Situ Solid-State NMR Spectroscopy.”
    <i>Batteries &#38; Supercaps</i> n/a, no. n/a (2025): e202500516. <a href="https://doi.org/10.1002/batt.202500516">https://doi.org/10.1002/batt.202500516</a>.'
  ieee: 'S. Egert <i>et al.</i>, “Long-Term Cycling Stability of Sodium/Sodium Ion
    Cells Probed by In Situ Solid-State NMR Spectroscopy,” <i>Batteries &#38; Supercaps</i>,
    vol. n/a, no. n/a, p. e202500516, 2025, doi: <a href="https://doi.org/10.1002/batt.202500516">10.1002/batt.202500516</a>.'
  mla: Egert, Sonja, et al. “Long-Term Cycling Stability of Sodium/Sodium Ion Cells
    Probed by In Situ Solid-State NMR Spectroscopy.” <i>Batteries &#38; Supercaps</i>,
    vol. n/a, no. n/a, John Wiley &#38; Sons, Ltd, 2025, p. e202500516, doi:<a href="https://doi.org/10.1002/batt.202500516">10.1002/batt.202500516</a>.
  short: S. Egert, R. Remesh, A.C. Jusdi, Y. Sugawara, K. Schutjajew, M. Oschatz,
    G. Buntkowsky, T. Gutmann, Batteries &#38; Supercaps n/a (2025) e202500516.
date_created: 2026-02-07T09:13:59Z
date_updated: 2026-02-17T16:18:23Z
doi: 10.1002/batt.202500516
extern: '1'
issue: n/a
keyword:
- solid-state nmr
- hard carbon
- in-situ
- SiCN
- sodium ion batteries
language:
- iso: eng
page: e202500516
publication: Batteries & Supercaps
publisher: John Wiley & Sons, Ltd
status: public
title: Long-Term Cycling Stability of Sodium/Sodium Ion Cells Probed by In Situ Solid-State
  NMR Spectroscopy
type: journal_article
user_id: '100715'
volume: n/a
year: '2025'
...
---
_id: '62812'
abstract:
- lang: eng
  text: Attributing features of electrochemical impedance spectra to electrochemical
    phenomena is both crucial and frequently ambiguous. To elucidate the origin of
    the ohmic part of the spectrum, activated carbon electrodes were prepared with
    different contents of polyacrylic acid as binder. Their impedance spectra and
    cyclic voltammograms were recorded using sulfuric acid of five different concentrations
    as the electrolyte. To distinguish electrolyte resistance and resistances related
    to the activated carbon layer of the electrode, the specific electrolyte conductivity
    was independently measured and compared against the ohmic part of the electrochemical
    impedance spectra (EIS). The capacitive cyclic voltammograms show larger resistive
    contributions with higher scan rate and lower electrolyte conductivity. Comparing
    the ohmic part of the EIS to the specific resistance of the electrolyte, a linear
    function with no statistically significant offset was found. The ohmic part of
    the EIS, thus, reflects the electrolyte resistance, not that of the carbon electrode.
author:
- first_name: Sebastian
  full_name: Reinke, Sebastian
  id: '117727'
  last_name: Reinke
- first_name: Vera
  full_name: Khamitsevich, Vera
  last_name: Khamitsevich
- first_name: Oliver
  full_name: Röth, Oliver
  id: '117786'
  last_name: Röth
- first_name: Julia
  full_name: Linnemann, Julia
  id: '116779'
  last_name: Linnemann
  orcid: 0000-0001-6883-5424
citation:
  ama: 'Reinke S, Khamitsevich V, Röth O, Linnemann J. Assessment of the Physicochemical
    Meaning of the Ohmic Series Resistance Observed for High Frequencies in Electrochemical
    Impedance Spectra. In: <i>2023 International Workshop on Impedance Spectroscopy
    (IWIS)</i>. IEEE; 2023. doi:<a href="https://doi.org/10.1109/iwis61214.2023.10302764">10.1109/iwis61214.2023.10302764</a>'
  apa: Reinke, S., Khamitsevich, V., Röth, O., &#38; Linnemann, J. (2023). Assessment
    of the Physicochemical Meaning of the Ohmic Series Resistance Observed for High
    Frequencies in Electrochemical Impedance Spectra. <i>2023 International Workshop
    on Impedance Spectroscopy (IWIS)</i>. <a href="https://doi.org/10.1109/iwis61214.2023.10302764">https://doi.org/10.1109/iwis61214.2023.10302764</a>
  bibtex: '@inproceedings{Reinke_Khamitsevich_Röth_Linnemann_2023, title={Assessment
    of the Physicochemical Meaning of the Ohmic Series Resistance Observed for High
    Frequencies in Electrochemical Impedance Spectra}, DOI={<a href="https://doi.org/10.1109/iwis61214.2023.10302764">10.1109/iwis61214.2023.10302764</a>},
    booktitle={2023 International Workshop on Impedance Spectroscopy (IWIS)}, publisher={IEEE},
    author={Reinke, Sebastian and Khamitsevich, Vera and Röth, Oliver and Linnemann,
    Julia}, year={2023} }'
  chicago: Reinke, Sebastian, Vera Khamitsevich, Oliver Röth, and Julia Linnemann.
    “Assessment of the Physicochemical Meaning of the Ohmic Series Resistance Observed
    for High Frequencies in Electrochemical Impedance Spectra.” In <i>2023 International
    Workshop on Impedance Spectroscopy (IWIS)</i>. IEEE, 2023. <a href="https://doi.org/10.1109/iwis61214.2023.10302764">https://doi.org/10.1109/iwis61214.2023.10302764</a>.
  ieee: 'S. Reinke, V. Khamitsevich, O. Röth, and J. Linnemann, “Assessment of the
    Physicochemical Meaning of the Ohmic Series Resistance Observed for High Frequencies
    in Electrochemical Impedance Spectra,” 2023, doi: <a href="https://doi.org/10.1109/iwis61214.2023.10302764">10.1109/iwis61214.2023.10302764</a>.'
  mla: Reinke, Sebastian, et al. “Assessment of the Physicochemical Meaning of the
    Ohmic Series Resistance Observed for High Frequencies in Electrochemical Impedance
    Spectra.” <i>2023 International Workshop on Impedance Spectroscopy (IWIS)</i>,
    IEEE, 2023, doi:<a href="https://doi.org/10.1109/iwis61214.2023.10302764">10.1109/iwis61214.2023.10302764</a>.
  short: 'S. Reinke, V. Khamitsevich, O. Röth, J. Linnemann, in: 2023 International
    Workshop on Impedance Spectroscopy (IWIS), IEEE, 2023.'
date_created: 2025-12-03T15:58:28Z
date_updated: 2026-01-19T15:40:41Z
department:
- _id: '985'
doi: 10.1109/iwis61214.2023.10302764
extern: '1'
keyword:
- electrochemical impedance spectroscopy
- supercapacitors
- carbon
language:
- iso: eng
publication: 2023 International Workshop on Impedance Spectroscopy (IWIS)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Assessment of the Physicochemical Meaning of the Ohmic Series Resistance Observed
  for High Frequencies in Electrochemical Impedance Spectra
type: conference
user_id: '116779'
year: '2023'
...
---
_id: '64045'
abstract:
- lang: eng
  text: Abstract In this work, we report on an improved cell assembly of cylindrical
    electrochemical cells for 23Na in-situ solid-state NMR (ssNMR) investigations.
    The cell set-up is suitable for using powder electrode materials. Reproducibility
    of our cell assembly is analyzed by preparing two cells containing hard carbon
    (HC) powder as working electrode and sodium metal as reference electrode. Electrochemical
    storage properties of HC powder electrode derived from carbonization of sustainable
    cellulose are studied by ssNMR. 23Na in-situ ssNMR monitors the sodiation/desodiation
    of a Na{\textbar}NaPF6{\textbar}HC cell (cell 1) over a period of 22?days, showing
    high cell stability. After the galvanostatic process, the HC powder material is
    investigated by high resolution 23Na ex-situ MAS NMR. The formation of ionic sodium
    species in different chemical environments is obtained. Subsequently, a second
    Na{\textbar}NaPF6{\textbar}HC cell (cell 2) is sodiated for 11?days achieving
    a capacity of 220?mAh/g. 23Na ex-situ MAS NMR measurements of the HC powder material
    extracted from this cell clearly indicate the presence of quasi-metallic sodium
    species next to ionic sodium species. This observation of quasi-metallic sodium
    species is discussed in terms of the achieved capacity of the cell as well as
    of side reactions of sodium in this electrode material.
author:
- first_name: Edina
  full_name: Šić, Edina
  last_name: Šić
- first_name: Konstantin
  full_name: Schutjajew, Konstantin
  last_name: Schutjajew
- first_name: Ulrich
  full_name: Haagen, Ulrich
  last_name: Haagen
- first_name: Hergen
  full_name: Breitzke, Hergen
  last_name: Breitzke
- first_name: Martin
  full_name: Oschatz, Martin
  last_name: Oschatz
- first_name: Gerd
  full_name: Buntkowsky, Gerd
  last_name: Buntkowsky
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
citation:
  ama: 'Šić E, Schutjajew K, Haagen U, et al. Electrochemical Sodium Storage in Hard
    Carbon Powder Electrodes Implemented in an Improved Cell Assembly: Insights from
    In-Situ and Ex-Situ Solid-State NMR. <i>Chemsuschem</i>. 2023;17:e202301300. doi:<a
    href="https://doi.org/10.1002/cssc.202301300">10.1002/cssc.202301300</a>'
  apa: 'Šić, E., Schutjajew, K., Haagen, U., Breitzke, H., Oschatz, M., Buntkowsky,
    G., &#38; Gutmann, T. (2023). Electrochemical Sodium Storage in Hard Carbon Powder
    Electrodes Implemented in an Improved Cell Assembly: Insights from In-Situ and
    Ex-Situ Solid-State NMR. <i>Chemsuschem</i>, <i>17</i>, e202301300. <a href="https://doi.org/10.1002/cssc.202301300">https://doi.org/10.1002/cssc.202301300</a>'
  bibtex: '@article{Šić_Schutjajew_Haagen_Breitzke_Oschatz_Buntkowsky_Gutmann_2023,
    title={Electrochemical Sodium Storage in Hard Carbon Powder Electrodes Implemented
    in an Improved Cell Assembly: Insights from In-Situ and Ex-Situ Solid-State NMR},
    volume={17}, DOI={<a href="https://doi.org/10.1002/cssc.202301300">10.1002/cssc.202301300</a>},
    journal={Chemsuschem}, publisher={John Wiley &#38; Sons, Ltd}, author={Šić, Edina
    and Schutjajew, Konstantin and Haagen, Ulrich and Breitzke, Hergen and Oschatz,
    Martin and Buntkowsky, Gerd and Gutmann, Torsten}, year={2023}, pages={e202301300}
    }'
  chicago: 'Šić, Edina, Konstantin Schutjajew, Ulrich Haagen, Hergen Breitzke, Martin
    Oschatz, Gerd Buntkowsky, and Torsten Gutmann. “Electrochemical Sodium Storage
    in Hard Carbon Powder Electrodes Implemented in an Improved Cell Assembly: Insights
    from In-Situ and Ex-Situ Solid-State NMR.” <i>Chemsuschem</i> 17 (2023): e202301300.
    <a href="https://doi.org/10.1002/cssc.202301300">https://doi.org/10.1002/cssc.202301300</a>.'
  ieee: 'E. Šić <i>et al.</i>, “Electrochemical Sodium Storage in Hard Carbon Powder
    Electrodes Implemented in an Improved Cell Assembly: Insights from In-Situ and
    Ex-Situ Solid-State NMR,” <i>Chemsuschem</i>, vol. 17, p. e202301300, 2023, doi:
    <a href="https://doi.org/10.1002/cssc.202301300">10.1002/cssc.202301300</a>.'
  mla: 'Šić, Edina, et al. “Electrochemical Sodium Storage in Hard Carbon Powder Electrodes
    Implemented in an Improved Cell Assembly: Insights from In-Situ and Ex-Situ Solid-State
    NMR.” <i>Chemsuschem</i>, vol. 17, John Wiley &#38; Sons, Ltd, 2023, p. e202301300,
    doi:<a href="https://doi.org/10.1002/cssc.202301300">10.1002/cssc.202301300</a>.'
  short: E. Šić, K. Schutjajew, U. Haagen, H. Breitzke, M. Oschatz, G. Buntkowsky,
    T. Gutmann, Chemsuschem 17 (2023) e202301300.
date_created: 2026-02-07T16:12:13Z
date_updated: 2026-02-17T16:13:10Z
doi: 10.1002/cssc.202301300
extern: '1'
intvolume: '        17'
keyword:
- solid-state nmr
- hard carbon
- electrochemical cells
- in-situ characterization
- sodium
language:
- iso: eng
page: e202301300
publication: Chemsuschem
publication_identifier:
  issn:
  - 1864-5631
publisher: John Wiley & Sons, Ltd
status: public
title: 'Electrochemical Sodium Storage in Hard Carbon Powder Electrodes Implemented
  in an Improved Cell Assembly: Insights from In-Situ and Ex-Situ Solid-State NMR'
type: journal_article
user_id: '100715'
volume: 17
year: '2023'
...
---
_id: '21207'
abstract:
- lang: eng
  text: Simple thermal treatment of guanine at temperatures ranging from 600 to 700
    °C leads to C1N1 condensates with unprecedented CO2/N2 selectivity when compared
    to other carbonaceous solid sorbents. Increasing the surface area of the CN condensates
    in the presence of ZnCl2 salt melts enhances the amount of CO2 adsorbed while
    preserving the high selectivity values and C1N1 structure. Results indicate that
    these new materials show a sorption mechanism a step closer to that of natural
    CO2 caption proteins and based on metal free structural cryptopores.
author:
- first_name: Janina
  full_name: Kossmann, Janina
  last_name: Kossmann
- first_name: Diana
  full_name: Piankova, Diana
  last_name: Piankova
- first_name: Nadezda
  full_name: V. Tarakina, Nadezda
  last_name: V. Tarakina
- first_name: Julian Joachim
  full_name: Heske, Julian Joachim
  id: '53238'
  last_name: Heske
- first_name: Thomas
  full_name: Kühne, Thomas
  id: '49079'
  last_name: Kühne
- first_name: Johannes
  full_name: Schmidt, Johannes
  last_name: Schmidt
- first_name: Markus
  full_name: Antonietti, Markus
  last_name: Antonietti
- first_name: Nieves
  full_name: López-Salas, Nieves
  last_name: López-Salas
citation:
  ama: Kossmann J, Piankova D, V. Tarakina N, et al. Guanine condensates as covalent
    materials and the concept of cryptopores. <i>Carbon</i>. 2021;172:497-505. doi:<a
    href="https://doi.org/10.1016/j.carbon.2020.10.047">https://doi.org/10.1016/j.carbon.2020.10.047</a>
  apa: Kossmann, J., Piankova, D., V. Tarakina, N., Heske, J. J., Kühne, T., Schmidt,
    J., … López-Salas, N. (2021). Guanine condensates as covalent materials and the
    concept of cryptopores. <i>Carbon</i>, <i>172</i>, 497–505. <a href="https://doi.org/10.1016/j.carbon.2020.10.047">https://doi.org/10.1016/j.carbon.2020.10.047</a>
  bibtex: '@article{Kossmann_Piankova_V. Tarakina_Heske_Kühne_Schmidt_Antonietti_López-Salas_2021,
    title={Guanine condensates as covalent materials and the concept of cryptopores},
    volume={172}, DOI={<a href="https://doi.org/10.1016/j.carbon.2020.10.047">https://doi.org/10.1016/j.carbon.2020.10.047</a>},
    journal={Carbon}, author={Kossmann, Janina and Piankova, Diana and V. Tarakina,
    Nadezda and Heske, Julian Joachim and Kühne, Thomas and Schmidt, Johannes and
    Antonietti, Markus and López-Salas, Nieves}, year={2021}, pages={497–505} }'
  chicago: 'Kossmann, Janina, Diana Piankova, Nadezda V. Tarakina, Julian Joachim
    Heske, Thomas Kühne, Johannes Schmidt, Markus Antonietti, and Nieves López-Salas.
    “Guanine Condensates as Covalent Materials and the Concept of Cryptopores.” <i>Carbon</i>
    172 (2021): 497–505. <a href="https://doi.org/10.1016/j.carbon.2020.10.047">https://doi.org/10.1016/j.carbon.2020.10.047</a>.'
  ieee: J. Kossmann <i>et al.</i>, “Guanine condensates as covalent materials and
    the concept of cryptopores,” <i>Carbon</i>, vol. 172, pp. 497–505, 2021.
  mla: Kossmann, Janina, et al. “Guanine Condensates as Covalent Materials and the
    Concept of Cryptopores.” <i>Carbon</i>, vol. 172, 2021, pp. 497–505, doi:<a href="https://doi.org/10.1016/j.carbon.2020.10.047">https://doi.org/10.1016/j.carbon.2020.10.047</a>.
  short: J. Kossmann, D. Piankova, N. V. Tarakina, J.J. Heske, T. Kühne, J. Schmidt,
    M. Antonietti, N. López-Salas, Carbon 172 (2021) 497–505.
date_created: 2021-02-11T15:00:58Z
date_updated: 2022-01-06T06:54:49Z
department:
- _id: '613'
doi: https://doi.org/10.1016/j.carbon.2020.10.047
intvolume: '       172'
keyword:
- CN
- Cryptopores
- Carbon dioxide capture
language:
- iso: eng
page: 497-505
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Carbon
publication_identifier:
  issn:
  - 0008-6223
status: public
title: Guanine condensates as covalent materials and the concept of cryptopores
type: journal_article
user_id: '71692'
volume: 172
year: '2021'
...
---
_id: '62804'
abstract:
- lang: eng
  text: We report on the facile synthesis of porous carbons based on a biopolymer
    lignin employing a two-step process which includes the activation by KOH in various
    amounts under an inert gas atmosphere. The resulting carbons are characterized
    with regard to their structural properties and their electrochemical performance
    as an active material in double-layer capacitors using for the first time an ionic
    liquid (EMIBF4) as the electrolyte for this type of carbon material to enhance
    storage ability. A capacitance of more than 200 F g–1 at 10 A g–1 is achieved
    for a carbon with a specific surface area of more than 1800 m2 g–1. One of the
    most crucial factors determining the electrochemical response of the active materials
    was found to be the strong surface functionalization by oxygen-containing groups.
    Furthermore, the sulfur content of the carbon precursor lignin does not result
    in a significant amount of sulfur-containing surface functionalities which might
    interact with the electrolyte.
article_type: original
author:
- first_name: Markus
  full_name: Klose, Markus
  last_name: Klose
- first_name: Romy
  full_name: Reinhold, Romy
  last_name: Reinhold
- first_name: Florian
  full_name: Logsch, Florian
  last_name: Logsch
- first_name: Florian
  full_name: Wolke, Florian
  last_name: Wolke
- first_name: Julia
  full_name: Linnemann, Julia
  id: '116779'
  last_name: Linnemann
  orcid: 0000-0001-6883-5424
- first_name: Ulrich
  full_name: Stoeck, Ulrich
  last_name: Stoeck
- first_name: Steffen
  full_name: Oswald, Steffen
  last_name: Oswald
- first_name: Martin
  full_name: Uhlemann, Martin
  last_name: Uhlemann
- first_name: Juan
  full_name: Balach, Juan
  last_name: Balach
- first_name: Jens
  full_name: Markowski, Jens
  last_name: Markowski
- first_name: Peter
  full_name: Ay, Peter
  last_name: Ay
- first_name: Lars
  full_name: Giebeler, Lars
  last_name: Giebeler
citation:
  ama: Klose M, Reinhold R, Logsch F, et al. Softwood Lignin as a Sustainable Feedstock
    for Porous Carbons as Active Material for Supercapacitors Using an Ionic Liquid
    Electrolyte. <i>ACS Sustainable Chemistry &#38; Engineering</i>. 2017;5(5):4094-4102.
    doi:<a href="https://doi.org/10.1021/acssuschemeng.7b00058">10.1021/acssuschemeng.7b00058</a>
  apa: Klose, M., Reinhold, R., Logsch, F., Wolke, F., Linnemann, J., Stoeck, U.,
    Oswald, S., Uhlemann, M., Balach, J., Markowski, J., Ay, P., &#38; Giebeler, L.
    (2017). Softwood Lignin as a Sustainable Feedstock for Porous Carbons as Active
    Material for Supercapacitors Using an Ionic Liquid Electrolyte. <i>ACS Sustainable
    Chemistry &#38; Engineering</i>, <i>5</i>(5), 4094–4102. <a href="https://doi.org/10.1021/acssuschemeng.7b00058">https://doi.org/10.1021/acssuschemeng.7b00058</a>
  bibtex: '@article{Klose_Reinhold_Logsch_Wolke_Linnemann_Stoeck_Oswald_Uhlemann_Balach_Markowski_et
    al._2017, title={Softwood Lignin as a Sustainable Feedstock for Porous Carbons
    as Active Material for Supercapacitors Using an Ionic Liquid Electrolyte}, volume={5},
    DOI={<a href="https://doi.org/10.1021/acssuschemeng.7b00058">10.1021/acssuschemeng.7b00058</a>},
    number={5}, journal={ACS Sustainable Chemistry &#38; Engineering}, publisher={American
    Chemical Society (ACS)}, author={Klose, Markus and Reinhold, Romy and Logsch,
    Florian and Wolke, Florian and Linnemann, Julia and Stoeck, Ulrich and Oswald,
    Steffen and Uhlemann, Martin and Balach, Juan and Markowski, Jens and et al.},
    year={2017}, pages={4094–4102} }'
  chicago: 'Klose, Markus, Romy Reinhold, Florian Logsch, Florian Wolke, Julia Linnemann,
    Ulrich Stoeck, Steffen Oswald, et al. “Softwood Lignin as a Sustainable Feedstock
    for Porous Carbons as Active Material for Supercapacitors Using an Ionic Liquid
    Electrolyte.” <i>ACS Sustainable Chemistry &#38; Engineering</i> 5, no. 5 (2017):
    4094–4102. <a href="https://doi.org/10.1021/acssuschemeng.7b00058">https://doi.org/10.1021/acssuschemeng.7b00058</a>.'
  ieee: 'M. Klose <i>et al.</i>, “Softwood Lignin as a Sustainable Feedstock for Porous
    Carbons as Active Material for Supercapacitors Using an Ionic Liquid Electrolyte,”
    <i>ACS Sustainable Chemistry &#38; Engineering</i>, vol. 5, no. 5, pp. 4094–4102,
    2017, doi: <a href="https://doi.org/10.1021/acssuschemeng.7b00058">10.1021/acssuschemeng.7b00058</a>.'
  mla: Klose, Markus, et al. “Softwood Lignin as a Sustainable Feedstock for Porous
    Carbons as Active Material for Supercapacitors Using an Ionic Liquid Electrolyte.”
    <i>ACS Sustainable Chemistry &#38; Engineering</i>, vol. 5, no. 5, American Chemical
    Society (ACS), 2017, pp. 4094–102, doi:<a href="https://doi.org/10.1021/acssuschemeng.7b00058">10.1021/acssuschemeng.7b00058</a>.
  short: M. Klose, R. Reinhold, F. Logsch, F. Wolke, J. Linnemann, U. Stoeck, S. Oswald,
    M. Uhlemann, J. Balach, J. Markowski, P. Ay, L. Giebeler, ACS Sustainable Chemistry
    &#38; Engineering 5 (2017) 4094–4102.
date_created: 2025-12-03T15:33:13Z
date_updated: 2025-12-03T16:36:06Z
department:
- _id: '985'
doi: 10.1021/acssuschemeng.7b00058
extern: '1'
intvolume: '         5'
issue: '5'
keyword:
- supercapacitor
- carbon
- pyrolysis
- lignin
language:
- iso: eng
page: 4094-4102
publication: ACS Sustainable Chemistry & Engineering
publication_identifier:
  issn:
  - 2168-0485
  - 2168-0485
publication_status: published
publisher: American Chemical Society (ACS)
quality_controlled: '1'
status: public
title: Softwood Lignin as a Sustainable Feedstock for Porous Carbons as Active Material
  for Supercapacitors Using an Ionic Liquid Electrolyte
type: journal_article
user_id: '116779'
volume: 5
year: '2017'
...
