过电位
非阻塞I/O
制氢
光伏
分解水
材料科学
电解
阳极
光电解
硒化铜铟镓太阳电池
化学工程
光伏系统
电化学
碱性水电解
太阳能电池
氢
电极
催化作用
光电子学
化学
电气工程
物理化学
有机化学
工程类
电解质
光催化
生物化学
作者
İlknur Bayrak Pehlivan,Johan Oscarsson,Zhen Qiu,Lars Stolt,Marika Edoff,Tomas Edvinsson
出处
期刊:iScience
[Elsevier]
日期:2021-01-01
卷期号:24 (1): 101910-101910
被引量:18
标识
DOI:10.1016/j.isci.2020.101910
摘要
Summary
In this work, a trimetallic NiMoV catalyst is developed for the hydrogen evolution reaction and characterized with respect to structure, valence, and elemental distribution. The overpotential to drive a 10 mA cm−2 current density is lowered from 94 to 78 mV versus reversible hydrogen electrode by introducing V into NiMo. A scalable stand-alone system for solar-driven water splitting was examined for a laboratory-scale device with 1.6 cm2 photovoltaic (PV) module area to an up-scaled device with 100 cm2 area. The NiMoV cathodic catalyst is combined with a NiO anode in alkaline electrolyzer unit thermally connected to synthesized (Ag,Cu) (In,Ga)Se2 ((A)CIGS) PV modules. Performance of 3- and 4-cell interconnected PV modules, electrolyzer, and hydrogen production of the PV electrolyzer are examined between 25°C and 50°C. The PV-electrolysis device having a 4-cell (A)CIGS under 100 mW cm−2 illumination and NiMoV-NiO electrolyzer shows 9.1% maximum and 8.5% averaged efficiency for 100 h operation.
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