Realizing the potential of hydrophobic crystalline carbon as a support for oxygen evolution electrocatalysts

Myeong Geun Kim, Tae Kyung Lee, Eungjun Lee, Subin Park, Hyun Ju Lee, Haneul Jin, Dong Wook Lee, Min Gi Jeong, Hun Gi Jung, Kyungmin Im, Chuan Hu, Hyung Chul Ham, Kwang Ho Song, Yung Eun Sung, Young Moo Lee, Sung Jong Yoo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Anion exchange membrane water electrolysis (AEMWE) is a sustainable solution for achieving net-zero carbon emissions and meeting growing energy demands through green H2 production. However, its commercialization has not been realized thus far owing to inefficient catalyst use and unsatisfactory performance, which are correlated to the inadequacy of current electrode structures. In this study, we developed an efficient electrode structure based on a corrosion-resistant hydrophobic crystalline carbon support, which was incorporated as a support for Fe-Ni-Co layered double hydroxide electrocatalysts. We observed an AEMWE performance greater than that reported in previous studies in terms of activity [mass-specific power (24.1 kW gmetal−1)] and durability (−0.06 mV h−1 for 520 h at 1.0 A cm−2). This could be attributed to the improved mass transport because of rapid water diffusion around the hydrophobic carbon and strong metal-carbon interactions. We believe that this study will promote the development of more carbon-supported oxygen evolution reaction electrocatalysts.

Original languageEnglish
Pages (from-to)5019-5028
Number of pages10
JournalEnergy and Environmental Science
Volume16
Issue number11
DOIs
Publication statusPublished - 2023 Jun 16

Bibliographical note

Publisher Copyright:
© 2023 The Royal Society of Chemistry

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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