Journal of Surface Science and Engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Design of Chlorine-resistant layer for stable electrode in seawater-based electrochemical devices

해수 기반 전기화학소자의 안정적인 전극을 위한 내염소층 설계

  • Suyeon Kim (Department of Materials Science and Engineering, Pusan National University) ;
  • Aye Myint Myat Kyaw (Department of Materials Science and Engineering, Pusan National University) ;
  • Chaeun Kim (Department of Materials Science and Engineering, Pusan National University) ;
  • Yewon Jang (Department of Materials Science and Engineering, Pusan National University) ;
  • Youri Han (Department of Materials Science and Engineering, Pusan National University) ;
  • Li Oi Lun (Department of Materials Science and Engineering, Pusan National University)
  • 김수연 (부산대학교 재료공학부) ;
  • ;
  • 김채언 (부산대학교 재료공학부) ;
  • 장예원 (부산대학교 재료공학부) ;
  • 한유리 (부산대학교 재료공학부) ;
  • Received : 2024.07.23
  • Accepted : 2024.08.05
  • Published : 2024.08.31
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Abstract

When seawater is used in electrochemical devices, issues arise such as the adsorption of chloride ions blocking the active sites for Oxygen reduction reactions (ORR) in seawater batteries, and the occurrence of Chlorine evolution reactions (ClER) in seawater electrolysis due to chloride anions (Cl-) competing with OH- for catalytic active sites, potentially slowing down Oxygen evolution reactions (OER). Consequently, the performance of components used in seawater battery and seawater electrolysis may deteriorate. Therefore, conventional alloys are often used by coating or plating methods to minimize corrosion, albeit at the cost of reducing electrical conductivity. This study thus designed a corrosion-resistant layer by doping carbon with Nitrogen (N) and Sulfur (S) to maintain electrical conductivity while preventing corrosion. Optimal N,S doping ratios were developed, with corrosion experiments confirming that N,S (10:90) carbon exhibited the best corrosion resistance performance.

Keywords

Acknowledgement

이 논문(또는 저서, 특허)은(는) 정부(과학기술정보통신부)의 재원으로 과학기술사업화진흥원의 지원을 받아 수행된 연구임('학연협력플랫폼구축 시범사업' RS-2023-00304764).

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