| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
특별심포지엄3. 수소에너지와 태양연료 심포지엄-오거나이저: 이상한(GIST) |
| 제목 |
Enhancing long-term photostability of BiVO4 photoanodes for solar water splitting |
| 초록 |
Solar hydrogen production using water splitting photoelectrochemical cells is an attractive way to harvest solar energy into a storable energy carrier. Among oxide-based photoelectrodes, n-type BiVO4 photoanodes have been widely coupled with chip photovoltaic materials because of its early photocurrent onset potential and favorable valance band position for water oxidation. In this presentation, I will present a strategy to suppress photocorrosion of BiVO4 photoanodes during photoelectrochemical water oxidation. Anodic photocorrosion of BiVO4 photoanodes involves the loss of V5+ from the BiVO4 lattice by dissolution. The use of a V5+-saturated electrolyte, which inhibits the photooxidation-coupled dissolution of BiVO4, can serve as a simple yet effective method to enhance the photostability of BiVO4 during water oxidation for hundreds hours. |
| 저자 |
이동기 |
| 소속 |
한국과학기술(연) |
| 키워드 |
<P>Solar hydrogen; Photoelectrochemical water splitting; BiVO4; photoelectrode; long-term stability</P>
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| E-Mail |
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