@article{52372, abstract = {{Due to the hydrolytic instability of LiPF6 in carbonate-based solvents, HF is a typical impurity in Li-ion battery electrolytes. HF significantly influences the performance of Li-ion batteries, for example by impacting the formation of the solid electrolyte interphase at the anode and by affecting transition metal dissolution at the cathode. Additionally, HF complicates studying fundamental interfacial electrochemistry of Li-ion battery electrolytes, such as direct anion reduction, because it is electrocatalytically relatively unstable, resulting in LiF passivation layers. Methods to selectively remove ppm levels of HF from LiPF6-containing carbonate-based electrolytes are limited. We introduce and benchmark a simple yet efficient electrochemical in situ method to selectively remove ppm amounts of HF from LiPF6-containing carbonate-based electrolytes. The basic idea is the application of a suitable potential to a high surface-area metallic electrode upon which only HF reacts (electrocatalytically) while all other electrolyte components are unaffected under the respective conditions.}}, author = {{Ge, Xiaokun and Huck, Marten and Kuhlmann, Andreas and Tiemann, Michael and Weinberger, Christian and Xu, Xiaodan and Zhao, Zhenyu and Steinrueck, Hans-Georg}}, issn = {{0013-4651}}, journal = {{Journal of The Electrochemical Society}}, keywords = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}}, pages = {{030552}}, publisher = {{The Electrochemical Society}}, title = {{{Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes}}}, doi = {{10.1149/1945-7111/ad30d3}}, volume = {{171}}, year = {{2024}}, } @article{40981, abstract = {{Room temperature sodium-sulfur (RT Na-S) batteries are considered potential candidates for stationary power storage applications due to their low cost, broad active material availability and low toxicity. Challenges, such as high volume expansion of the S-cathode upon discharge, low electronic conductivity of S as active material and herewith limited rate capability as well as the shuttling of polysulfides (PSs) as intermediates often impede the cycle stability and practical application of Na-S batteries. Sulfurized poly(acrylonitrile) (SPAN) inherently inhibits the shuttling of PSs and shows compatibility with carbonate-based electrolytes, however, its exact redox mechanism remained unclear to date. Herein, we implement a commercially available and simple electrolyte into the Na-SPAN cell chemistry and demonstrate its high rate and cycle stability. Through the application of in situ techniques utilizing electronic impedance spectroscopy (EIS) and X-ray absorption spectroscopy (XAS) at different depths of charge and discharge, an insight into SPAN’s redox chemistry is obtained.}}, author = {{Kappler, Julian and Tonbul, Güldeniz and Schoch, Roland and Murugan, Saravanakumar and Nowakowski, Michał and Lange, Pia Lena and Klostermann, Sina Vanessa and Bauer, Matthias and Schleid, Thomas and Kästner, Johannes and Buchmeiser, Michael Rudolf}}, issn = {{0013-4651}}, journal = {{Journal of The Electrochemical Society}}, keywords = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}}, number = {{1}}, publisher = {{The Electrochemical Society}}, title = {{{Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile) as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries}}}, doi = {{10.1149/1945-7111/acb2fa}}, volume = {{170}}, year = {{2023}}, } @article{30920, abstract = {{Abstract Batteries capable of extreme fast-charging (XFC) are a necessity for the deployment of electric vehicles. Material properties of electrodes and electrolytes along with cell parameters such as stack pressure and temperature have coupled, synergistic, and sometimes deleterious effects on fast-charging performance. We develop a new experimental testbed that allows precise and conformal application of electrode stack pressure. We focus on cell capacity degradation using single-layer pouch cells with graphite anodes, LiNi0.5Mn0.3Co0.2O2 (NMC532) cathodes, and carbonate-based electrolyte. In the tested range (10 – 125 psi), cells cycled at higher pressure show higher capacity and less capacity fading. Additionally, Li plating decreases with increasing pressure as observed with scanning electron microscopy (SEM) and optical imaging. While the loss of Li inventory from Li plating is the largest contributor to capacity fade, electrochemical and SEM examination of the NMC cathodes after XFC experiments show increased secondary particle damage at lower pressure. We infer that the better performance at higher pressure is due to more homogenous reactions of active materials across the electrode and less polarization through the electrode thickness. Our study emphasizes the importance of electrode stack pressure in XFC batteries and highlights its subtle role in cell conditions.}}, author = {{Cao, Chuntian and Steinrück, Hans-Georg and Paul, Partha P and Dunlop, Alison R. and Trask, Stephen E. and Jansen, Andrew and Kasse, Robert M and Thampy, Vivek and Yusuf, Maha and Nelson Weker, Johanna and Shyam, Badri and Subbaraman, Ram and Davis, Kelly and Johnston, Christina M and Takacs, Christopher J and Toney, Michael}}, issn = {{0013-4651}}, journal = {{Journal of The Electrochemical Society}}, keywords = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}}, pages = {{040540}}, publisher = {{The Electrochemical Society}}, title = {{{Conformal Pressure and Fast-Charging Li-Ion Batteries}}}, doi = {{10.1149/1945-7111/ac653f}}, volume = {{169}}, year = {{2022}}, } @article{32432, author = {{Yang, Yu and Huang, Jingyuan and Dornbusch, Daniel and Grundmeier, Guido and Fahmy, Karim and Keller, Adrian and Cheung, David L.}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, pages = {{9257–9265}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Effect of Surface Hydrophobicity on the Adsorption of a Pilus-Derived Adhesin-like Peptide}}}, doi = {{10.1021/acs.langmuir.2c01016}}, volume = {{38}}, year = {{2022}}, } @article{32764, author = {{Kasse, Robert M. and Geise, Natalie R. and Sebti, Elias and Lim, Kipil and Takacs, Christopher J. and Cao, Chuntian and Steinrück, Hans-Georg and Toney, Michael F.}}, issn = {{2574-0962}}, journal = {{ACS Applied Energy Materials}}, keywords = {{Electrical and Electronic Engineering, Materials Chemistry, Electrochemistry, Energy Engineering and Power Technology, Chemical Engineering (miscellaneous)}}, number = {{7}}, pages = {{8273--8281}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Combined Effects of Uniform Applied Pressure and Electrolyte Additives in Lithium-Metal Batteries}}}, doi = {{10.1021/acsaem.2c00806}}, volume = {{5}}, year = {{2022}}, } @article{33682, author = {{Khazaei, Mohammad and Ranjbar, Ahmad and Kang, Yoon‐Gu and Liang, Yunye and Khaledialidusti, Rasoul and Bae, Soungmin and Raebiger, Hannes and Wang, Vei and Han, Myung Joon and Mizoguchi, Hiroshi and Bahramy, Mohammad S. and Kühne, Thomas and Belosludov, Rodion V. and Ohno, Kaoru and Hosono, Hideo}}, issn = {{1616-301X}}, journal = {{Advanced Functional Materials}}, keywords = {{Electrochemistry, Condensed Matter Physics, Biomaterials, Electronic, Optical and Magnetic Materials}}, number = {{20}}, publisher = {{Wiley}}, title = {{{Electronic Structures of Group III–V Element Haeckelite Compounds: A Novel Family of Semiconductors, Dirac Semimetals, and Topological Insulators}}}, doi = {{10.1002/adfm.202110930}}, volume = {{32}}, year = {{2022}}, } @article{40984, abstract = {{A two-step seeded-growth method was refined to synthesize Au@Pd core@shell nanoparticles with thin Pd shells, which were then deposited onto alumina to obtain a supported Au@Pd/Al2O3 catalyst active for prototypical CO oxidation. By the strict control of temperature and Pd/Au molar ratio and the use of l-ascorbic acid for making both Au cores and Pd shells, a 1.5 nm Pd layer is formed around the Au core, as evidenced by transmission electron microscopy and energy-dispersive spectroscopy. The core@shell structure and the Pd shell remain intact upon deposition onto alumina and after being used for CO oxidation, as revealed by additional X-ray diffraction and X-ray photoemission spectroscopy before and after the reaction. The Pd shell surface was characterized with in situ infrared (IR) spectroscopy using CO as a chemical probe during CO adsorption–desorption. The IR bands for CO ad-species on the Pd shell suggest that the shell exposes mostly low-index surfaces, likely Pd(111) as the majority facet. Generally, the IR bands are blue-shifted as compared to conventional Pd/alumina catalysts, which may be due to the different support materials for Pd, Au versus Al2O3, and/or less strain of the Pd shell. Frequencies obtained from density functional calculations suggest the latter to be significant. Further, the catalytic CO oxidation ignition-extinction processes were followed by in situ IR, which shows the common CO poisoning and kinetic behavior associated with competitive adsorption of CO and O2 that is typically observed for noble metal catalysts.}}, author = {{Feng, Yanyue and Schaefer, Andreas and Hellman, Anders and Di, Mengqiao and Härelind, Hanna and Bauer, Matthias and Carlsson, Per-Anders}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{42}}, pages = {{12859--12870}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Synthesis and Characterization of Catalytically Active Au Core─Pd Shell Nanoparticles Supported on Alumina}}}, doi = {{10.1021/acs.langmuir.2c01834}}, volume = {{38}}, year = {{2022}}, } @article{40566, author = {{Rodríguez-Gómez, Alberto and Lepre, Enrico and Sánchez-Silva, Luz and Lopez Salas, Nieves and de la Osa, Ana Raquel}}, issn = {{2095-4956}}, journal = {{Journal of Energy Chemistry}}, keywords = {{Electrochemistry, Energy (miscellaneous), Energy Engineering and Power Technology, Fuel Technology}}, pages = {{168--180}}, publisher = {{Elsevier BV}}, title = {{{PtRu nanoparticles supported on noble carbons for ethanol electrooxidation}}}, doi = {{10.1016/j.jechem.2021.07.004}}, volume = {{66}}, year = {{2021}}, } @article{62806, abstract = {{The electrical double‐layer plays a key role in important interfacial electrochemical processes from catalysis to energy storage and corrosion. Therefore, understanding its structure is crucial for the progress of sustainable technologies. We extract new physico‐chemical information on the capacitance and structure of the electrical double‐layer of platinum and gold nanoparticles at the molecular level, employing single nanoparticle electrochemistry. The charge storage ability of the solid/liquid interface is larger by one order‐of‐magnitude than predicted by the traditional mean‐field models of the double‐layer such as the Gouy–Chapman–Stern model. Performing molecular dynamics simulations, we investigate the possible relationship between the measured high capacitance and adsorption strength of the water adlayer formed at the metal surface. These insights may launch the active tuning of solid–solvent and solvent–solvent interactions as an innovative design strategy to transform energy technologies towards superior performance and sustainability.}}, author = {{Azimzadeh Sani, Mahnaz and Pavlopoulos, Nicholas G. and Pezzotti, Simone and Serva, Alessandra and Cignoni, Paolo and Linnemann, Julia and Salanne, Mathieu and Gaigeot, Marie‐Pierre and Tschulik, Kristina}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, keywords = {{single-entity electrochemistry, electrical double layer, supercapacitor, nanoparticles}}, number = {{5}}, publisher = {{Wiley}}, title = {{{Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer}}}, doi = {{10.1002/anie.202112679}}, volume = {{61}}, year = {{2021}}, } @article{62805, abstract = {{Single-entity electrochemistry allows for assessing electrocatalytic activities of individual material entities such as nanoparticles (NPs). Thus, it becomes possible to consider intrinsic electrochemical properties of nanocatalysts when researching how activity relates to physical and structural material properties. Conversely, conventional electrochemical techniques provide a normalized sum current referring to a huge ensemble of NPs constituting, along with additives (e.g., binders), a complete catalyst-coated electrode. Accordingly, recording electrocatalytic responses of single NPs avoids interferences of ensemble effects and reduces the complexity of electrocatalytic processes, thus enabling detailed description and modelling. Herein, we present insights into the oxygen evolution catalysis at individual cubic Co3O4 NPs impacting microelectrodes of different support materials. Simulating diffusion at supported nanocubes, measured step current signals can be analyzed, providing edge lengths, corresponding size distributions, and interference-free turnover frequencies. The provided nano-impact investigation of (electro-)catalyst-support effects contradicts assumptions on a low number of highly active sites.}}, author = {{Liu, Zhibin and Corva, Manuel and Amin, Hatem M. A. and Blanc, Niclas and Linnemann, Julia and Tschulik, Kristina}}, issn = {{1422-0067}}, journal = {{International Journal of Molecular Sciences}}, keywords = {{electrocatalysis, oxygen evolution reaction, cobalt spinel, single-entity electrochemistry}}, number = {{23}}, publisher = {{MDPI AG}}, title = {{{Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects}}}, doi = {{10.3390/ijms222313137}}, volume = {{22}}, year = {{2021}}, } @article{40580, abstract = {{

A gas sensor comprising of a planar electrode device covered with a thin layer of gel polymer electrolyte gave accurate and fast sensing responses for oxygen and ammonia detection in both the cathodic and anodic potential regions.

}}, author = {{Lee, Junqiao and Hussain, Ghulam and Lopez Salas, Nieves and MacFarlane, Douglas R. and Silvester, Debbie S.}}, issn = {{0003-2654}}, journal = {{The Analyst}}, keywords = {{Electrochemistry, Spectroscopy, Environmental Chemistry, Biochemistry, Analytical Chemistry}}, number = {{5}}, pages = {{1915--1924}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Thin films of poly(vinylidene fluoride-co-hexafluoropropylene)-ionic liquid mixtures as amperometric gas sensing materials for oxygen and ammonia}}}, doi = {{10.1039/c9an02153a}}, volume = {{145}}, year = {{2020}}, } @article{41822, author = {{Carl, Nico and Müller, Wenke and Schweins, Ralf and Huber, Klaus}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{1}}, pages = {{223--231}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Controlling Self-Assembly with Light and Temperature}}}, doi = {{10.1021/acs.langmuir.9b03040}}, volume = {{36}}, year = {{2019}}, } @article{41828, author = {{Hämisch, Benjamin and Büngeler, Anne and Kielar, Charlotte and Keller, Adrian and Strube, Oliver and Huber, Klaus}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{37}}, pages = {{12113--12122}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Self-Assembly of Fibrinogen in Aqueous, Thrombin-Free Solutions of Variable Ionic Strengths}}}, doi = {{10.1021/acs.langmuir.9b01515}}, volume = {{35}}, year = {{2019}}, } @article{41830, author = {{Stolzenburg, Pierre and Hämisch, Benjamin and Richter, Sebastian and Huber, Klaus and Garnweitner, Georg}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{43}}, pages = {{12834--12844}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Secondary Particle Formation during the Nonaqueous Synthesis of Metal Oxide Nanocrystals}}}, doi = {{10.1021/acs.langmuir.8b00020}}, volume = {{34}}, year = {{2018}}, } @article{41836, author = {{Kley, M. and Kempter, A. and Boyko, V. and Huber, Klaus}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{24}}, pages = {{6071--6083}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Silica Polymerization from Supersaturated Dilute Aqueous Solutions in the Presence of Alkaline Earth Salts}}}, doi = {{10.1021/acs.langmuir.7b00887}}, volume = {{33}}, year = {{2017}}, } @article{41835, author = {{Büngeler, Anne and Hämisch, Benjamin and Huber, Klaus and Bremser, Wolfgang and Strube, Oliver I.}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{27}}, pages = {{6895--6901}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Insight into the Final Step of the Supramolecular Buildup of Eumelanin}}}, doi = {{10.1021/acs.langmuir.7b01634}}, volume = {{33}}, year = {{2017}}, } @article{35332, author = {{Xu, Yang and Laupheimer, Michaela and Preisig, Natalie and Sottmann, Thomas and Schmidt, Claudia and Stubenrauch, Cosima}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{31}}, pages = {{8589--8598}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Gelled Lyotropic Liquid Crystals}}}, doi = {{10.1021/acs.langmuir.5b01992}}, volume = {{31}}, year = {{2015}}, } @article{40592, author = {{Lopez Salas, Nieves and Jardim, E. O. and Silvestre-Albero, A. and Gutiérrez, M. C. and Ferrer, M. L. and Rodríguez-Reinoso, F. and Silvestre-Albero, J. and del Monte, F.}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{41}}, pages = {{12220--12228}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Use of Eutectic Mixtures for Preparation of Monolithic Carbons with CO2-Adsorption and Gas-Separation Capabilities}}}, doi = {{10.1021/la5034146}}, volume = {{30}}, year = {{2014}}, } @article{41974, author = {{Kley, M. and Kempter, A. and Boyko, V. and Huber, Klaus}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{42}}, pages = {{12664--12674}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Mechanistic Studies of Silica Polymerization from Supersaturated Aqueous Solutions by Means of Time-Resolved Light Scattering}}}, doi = {{10.1021/la502730y}}, volume = {{30}}, year = {{2014}}, } @article{35340, author = {{Stubenrauch, Cosima and Kleinschmidt, Felix and Schmidt, Claudia}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{25}}, pages = {{9206--9210}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Structural Evolution in the Isotropic Channel of a Water–Nonionic Surfactant System That Has a Disconnected Lamellar Phase: A 1H NMR Self-Diffusion Study}}}, doi = {{10.1021/la301948d}}, volume = {{28}}, year = {{2012}}, }