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Mechanism in pH effects of electrochemical reactions: a mini-review

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(5), pp.1269-1286
  • DOI : 10.1007/s42823-024-00724-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : December 19, 2023
  • Accepted : March 16, 2024
  • Published : June 14, 2024

Liu Sibei 1 Wang Zhuowen 1 Qiu Shan 1 Deng Fengxia 2

1State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology
2State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology

Accredited

ABSTRACT

pH plays a pivotal role in influencing various aspects of proton-coupled electron transfer (PCET) reactions in electrochemical systems. These reactions are affected by pH in terms of mass transport, electrochemical double layer (EDL) structure, and surface adsorption energy, all of which impact the overall electrochemical processes. This review article aims to provide a comprehensive understanding of the research progress made in elucidating the effects of pH on different electrochemical reactions, the hydrogen evolution reaction/hydrogen oxidation reaction (HER/HOR), oxygen reduction reaction/oxygen evolution reaction (ORR/OER), and carbon dioxide reduction reaction (CO2RR). To embark on this endeavor, we have conducted a bibliometric analysis to clearly outline of the research trends and advancements in the field concerning the pH effects. Subsequently, we present a systematic overview of the mechanisms governing these reactions, with a special focus on pH’s influence on both the proton and electron aspects. We conclude by discussing the current challenges in this area and suggesting future research avenues that could further our understanding of pH's role in electrochemical reactions.

Citation status

Scopus Citation Counts (1) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-07-01)

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