Journal of the Microelectronics and Packaging Society (마이크로전자및패키징학회지)

The Korean Microelectronics and Packaging Society (한국마이크로전자및패키징학회)
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Tin Oxide-modulated to Cu(OH)2 Nanowires for Efficient Electrochemical Reduction of CO2 to HCOOH and CO

SnO2/Cu(OH)2 Nanowires 전극을 이용한 전기화학적 이산화탄소 환원 특성

  • Chaewon Seong (Department of Chemicals & Engineering, Chonnam National University) ;
  • Hyojung Bae (Photonics Energy Materials Research Center, Korea Photonics Technology Institute (KOPTI)) ;
  • Sea Cho (Department of Chemicals & Engineering, Chonnam National University) ;
  • Jiwon Heo (Department of Chemicals & Engineering, Chonnam National University) ;
  • Eun Mi Han (Department of Chemicals & Engineering, Chonnam National University) ;
  • Jun-Seok Ha (Department of Chemicals & Engineering, Chonnam National University)
  • 성채원 (전남대학교 화학공학부) ;
  • 배효정 (한국광기술원 광에너지소재연구센터) ;
  • 조세아 (전남대학교 화학공학부) ;
  • 허지원 (전남대학교 화학공학부) ;
  • 한은미 (전남대학교 화학공학부) ;
  • 하준석 (전남대학교 화학공학부)
  • Received : 2023.12.22
  • Accepted : 2023.12.30
  • Published : 2023.12.30
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Abstract

Electrochemical (EC) CO2 reduction is a promising method to convert CO2 into valuable hydrocarbon fuels and chemicals ecofriendly. Here, we report on a facile method to synthesize surface-controlled SnO2/Cu(OH)2 nanowires (NWs) and its EC reduction of CO2 to HCOOH and CO. The SnO2/Cu(OH)2 NWs (-16 mA/cm2) showed superior electrochemical performance compared to Cu(OH)2 NWs (-6 mA/cm2) at -1.0 V (vs. RHE). SnO2/Cu(OH)2 NWs showed the maximum Faradaic efficiency for conversion to HCOOH (58.01 %) and CO (29.72 %). The optimized catalyst exhibits a high C1 Faradaic efficiency stable electrolysis for 2 h in a KHCO3 electrolyte. This study facilitates the potential for the EC reduction of CO2 to chemical fuels.

전기화학적 이산화탄소 (CO2) 환원은 CO2를 고부가가치의 탄소화합물로 전환하는 매우 유망한 방법이다. 본 논문에서는 양극 산화법과 원자층 증착법을 이용하여 전기화학적 CO2 환원용 SnO2/Cu(OH)2 나노와이어 (NWs) 전극을 합성하는 손쉬운 방법과 그 특성에 대해 보고한다. 제작된 SnO2/Cu(OH)2 NWs (-16 mA/cm2)는 -1.0 V (vs. RHE)에서 Cu(OH)2 NWs (-6 mA/cm2) 대비 더 우수한 전기화학적 성능을 보였다. CO2 환원 성능을 확인해 보았을 때도 일산화탄소(CO), 포름산염 (HCOOH) 생성물에 대해 각각 29.72 %, 58.01 %의 높은 페러데이 효율 (FE)을 보였다. 본 연구는 CO2 배출로 인한 기후 변화에 대응하는 경제적이며 지속 가능한 방법을 제공할 뿐만 아니라, 전기화학적 CO2 환원용 전극 개발에 크게 기여할 것으로 예상된다.

Keywords

Acknowledgement

본 과제(결과물)는 2023년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업(2021RIS-002)과 교육과학기술부의 재원으로 한국연구재단의 대학중점연구소 지원사업으로 수행된 연구임(2018R1A6A1A03024334).

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