|학술대회||2019년 가을 (10/30 ~ 11/01, 제주국제컨벤션센터(ICC JEJU))|
|제목||Solar Water Splitting using Ni-based catalysts for the Anion Exchange Membrane Water Electrolyzer|
|초록||Hydrogen is recognized as a promising approach to store solar energy. Among the various hydrogen production methods, water electrolysis connected with solar energy has been considered as a solar-to-hydrogen (STH). A conventional water electrolysis system is consisted of anode, cathode, and alkaline electrolyte in batch type cell. Ohmic resistance of the electrolyte between two electrodes leads to serious voltage drop. The produced hydrogen purity is lowered by crossover of oxygen transferred. Ion-conducting membrane is sandwiched by two gas diffusion electrode (GDE) with zero gap to fabricate membrane electrode assembly (MEA). The crossover of gases is prevented by membrane, indicating that high faradaic efficiency for hydrogen evolution reaction (HER) which leads to high STH.
Herein, The fabricated NiMo and NiFe GDEs were applied to MEA for the Anion Exchange Membrane Water Electrolyzer (AEMWE).The STH was calculated using a combination system of perovskite/Si solar cell and AEMWE.
|저자||한경호1, 박훈기2, 오정현1, 김진영2, 장호원2, 안상현1|
|키워드||Solar-to-hydrogen effciency; Water splitting; Ni-based Catalysts; Anion exchange membrane water electrolyzer|