---
_id: '62810'
abstract:
- lang: eng
  text: Cobalt iron containing layered double hydroxides (LDHs) and spinels are promising
    catalysts for the electrochemical oxygen evolution reaction (OER). Towards development
    of better performing catalysts, the precise tuning of mesostructural features
    such as pore size is desirable, but often hard to achieve. Herein, a computer‐controlled
    microemulsion‐assisted co‐precipitation (MACP) method at constant pH is established
    and compared to conventional co‐precipitation. With MACP, the particle growth
    is limited and through variation of the constant pH during synthesis the pore
    size of the as‐prepared catalysts is controlled, generating materials for the
    systematic investigation of confinement effects during OER. At a threshold pore
    size, overpotential increased significantly. Electrochemical impedance spectroscopy
    (EIS) indicated a change in OER mechanism, involving the oxygen release step.
    It is assumed that in smaller pores the critical radius for gas bubble formation
    is not met and therefore a smaller charge‐transfer resistance is observed for
    medium frequencies.
article_number: e202202015
article_type: original
author:
- first_name: Anna
  full_name: Rabe, Anna
  last_name: Rabe
- first_name: Maximilian
  full_name: Jaugstetter, Maximilian
  last_name: Jaugstetter
- first_name: Felix
  full_name: Hiege, Felix
  last_name: Hiege
- first_name: Nicolas
  full_name: Cosanne, Nicolas
  last_name: Cosanne
- first_name: Klaus Friedel
  full_name: Ortega, Klaus Friedel
  last_name: Ortega
- first_name: Julia
  full_name: Linnemann, Julia
  id: '116779'
  last_name: Linnemann
  orcid: 0000-0001-6883-5424
- first_name: Kristina
  full_name: Tschulik, Kristina
  last_name: Tschulik
- first_name: Malte
  full_name: Behrens, Malte
  last_name: Behrens
citation:
  ama: Rabe A, Jaugstetter M, Hiege F, et al. Tailoring Pore Size and Catalytic Activity
    in Cobalt Iron Layered Double Hydroxides and Spinels by Microemulsion‐Assisted
    pH‐Controlled Co‐Precipitation. <i>ChemSusChem</i>. 2023;16(10). doi:<a href="https://doi.org/10.1002/cssc.202202015">10.1002/cssc.202202015</a>
  apa: Rabe, A., Jaugstetter, M., Hiege, F., Cosanne, N., Ortega, K. F., Linnemann,
    J., Tschulik, K., &#38; Behrens, M. (2023). Tailoring Pore Size and Catalytic
    Activity in Cobalt Iron Layered Double Hydroxides and Spinels by Microemulsion‐Assisted
    pH‐Controlled Co‐Precipitation. <i>ChemSusChem</i>, <i>16</i>(10), Article e202202015.
    <a href="https://doi.org/10.1002/cssc.202202015">https://doi.org/10.1002/cssc.202202015</a>
  bibtex: '@article{Rabe_Jaugstetter_Hiege_Cosanne_Ortega_Linnemann_Tschulik_Behrens_2023,
    title={Tailoring Pore Size and Catalytic Activity in Cobalt Iron Layered Double
    Hydroxides and Spinels by Microemulsion‐Assisted pH‐Controlled Co‐Precipitation},
    volume={16}, DOI={<a href="https://doi.org/10.1002/cssc.202202015">10.1002/cssc.202202015</a>},
    number={10e202202015}, journal={ChemSusChem}, publisher={Wiley}, author={Rabe,
    Anna and Jaugstetter, Maximilian and Hiege, Felix and Cosanne, Nicolas and Ortega,
    Klaus Friedel and Linnemann, Julia and Tschulik, Kristina and Behrens, Malte},
    year={2023} }'
  chicago: Rabe, Anna, Maximilian Jaugstetter, Felix Hiege, Nicolas Cosanne, Klaus
    Friedel Ortega, Julia Linnemann, Kristina Tschulik, and Malte Behrens. “Tailoring
    Pore Size and Catalytic Activity in Cobalt Iron Layered Double Hydroxides and
    Spinels by Microemulsion‐Assisted PH‐Controlled Co‐Precipitation.” <i>ChemSusChem</i>
    16, no. 10 (2023). <a href="https://doi.org/10.1002/cssc.202202015">https://doi.org/10.1002/cssc.202202015</a>.
  ieee: 'A. Rabe <i>et al.</i>, “Tailoring Pore Size and Catalytic Activity in Cobalt
    Iron Layered Double Hydroxides and Spinels by Microemulsion‐Assisted pH‐Controlled
    Co‐Precipitation,” <i>ChemSusChem</i>, vol. 16, no. 10, Art. no. e202202015, 2023,
    doi: <a href="https://doi.org/10.1002/cssc.202202015">10.1002/cssc.202202015</a>.'
  mla: Rabe, Anna, et al. “Tailoring Pore Size and Catalytic Activity in Cobalt Iron
    Layered Double Hydroxides and Spinels by Microemulsion‐Assisted PH‐Controlled
    Co‐Precipitation.” <i>ChemSusChem</i>, vol. 16, no. 10, e202202015, Wiley, 2023,
    doi:<a href="https://doi.org/10.1002/cssc.202202015">10.1002/cssc.202202015</a>.
  short: A. Rabe, M. Jaugstetter, F. Hiege, N. Cosanne, K.F. Ortega, J. Linnemann,
    K. Tschulik, M. Behrens, ChemSusChem 16 (2023).
date_created: 2025-12-03T15:51:54Z
date_updated: 2025-12-03T16:28:26Z
department:
- _id: '985'
doi: 10.1002/cssc.202202015
extern: '1'
intvolume: '        16'
issue: '10'
keyword:
- electrocatalysis
- oxygen evolution reaction
- cobalt spinel
- cobalt hydroxide
- LDH
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: ChemSusChem
publication_identifier:
  issn:
  - 1864-5631
  - 1864-564X
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Tailoring Pore Size and Catalytic Activity in Cobalt Iron Layered Double Hydroxides
  and Spinels by Microemulsion‐Assisted pH‐Controlled Co‐Precipitation
type: journal_article
user_id: '116779'
volume: 16
year: '2023'
...