The design and fabrication of photoelectrochemical (PEC) electrodes for efficient water splitting is important for developing a sustainable hydrogen evolution system. Among various development approaches for PEC electrodes, the chemical vapor deposition method of atomic layer deposition (ALD), based on self-limiting surface reactions, has attracted attention because it allows precise thickness and composition control as well as conformal coating on various substrates. In this study, recent research progress in improving PEC performance using ALD coating methods is discussed, including 3D and heterojunction-structured PEC electrodes, ALD coatings of noble metals, and the use of sulfide materials as co-catalysts. The enhanced long-term stability of PEC cells by ALD-deposited protecting layers is also reviewed. ALD provides multiple routes to develop improved hydrogen evolution PEC cells.

Abstract
 1. 서 론
 2. ALD를 이용한 수소 생성 전극 동향
  2.1. ALD를 이용한 3차원 전극 소재 개발
  2.2. ALD를 이용한 산화물 이종접합구조 광촉매 전극 소재 개발
  2.3. ALD를 이용한 귀금속 및 황화물 담지 촉매 전극 소재 개발
  2.4. ALD를 이용한 촉매전극 보호층 소재 개발
 3. 요약 및 결론
 감사의 글
 References

• 한정환(서울과학기술대학교 신소재공학과) | Jeong Hwan Han Corresponding Author