전기화학적 물 분해 시스템에서 산소발생반응을 위한 Co와 Mo 기반 촉매의 최근 연구 동향
Research on Co- and Mo-Based Catalysts for the Oxygen Evolution Reaction in Electrochemical Water Splitting System
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초록
급격한 온실가스 배출량 증가로 인해 지구 온난화가 심화되고 있다. 이로 인해 탄소중립의 필요성과 이행이 더욱 절실해졌다. 이를 위해 여러 가지 신재생에너지 중 수소에 대한 관심이 부각되고 있다. 수소는 지구 상에 풍부한 자원이며 무탄소 전원으로 친환경적이다. 궁극적으로 물의 전기분해에 의해 친환경 수소를 얻을 수 있다. 하지만 산소 발생 반응에 사용되는 촉매는 고가이며 희귀하고 촉매의 내구성에 문제가 있어 어려움을 겪고 있기 때문에 비귀금속 촉매의 개발이 필요하다. 본 총설에서는 최근 발표된 산소 발생 촉매 중 비귀금속 촉매인 Co와 Mo 기반의 촉매를 정리, 요약하여 소개하고 있다. 이를 통해 비귀금속 촉매의 활성과 내구성을 증가시키기 위한 촉매의 특성 설계를 이해하는 데 도움이 될 것이다.
Abstract
Global warming is getting worse since a dramatic increase in greenhouse gas emissions recently. As a result, the necessity and implementation of carbon neutrality is required more urgently. To do this, among various new and renewable energies, attention in hydrogen arises. Hydrogen as a carbon-free power source is an abundant resource on Earth and is ecofriendly. Eventually, perfectly eco-friendly hydrogen can be obtained through electrolysis of water. However, the catalyst used in the oxygen evolution reaction is rare and expensive, and has a durability issue. Consequently, the development of a non-precious metal catalyst is necessary. In this review paper, we summarize and introduce Co- and Mo- based catalysts among recently announced oxygen evolution catalysts. This will help understand the design of catalyst to increase the activity and durability of non-precious metal catalysts.
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