基于NiMoV和NiO的催化剂，采用热集成光伏技术，以可扩展的方式实现高效太阳能驱动水分解。
NiMoV and NiO-based catalysts for efficient solar-driven water splitting using thermally integrated photovoltaics in a scalable approach.
作者信息
Pehlivan İlknur Bayrak, Oscarsson Johan, Qiu Zhen, Stolt Lars, Edoff Marika, Edvinsson Tomas
机构信息
Department of Materials Science and Engineering, Solid State Physics, Uppsala University, Box 534, 75121 Uppsala, Sweden.
Solibro Research AB, Vallvägen 5, 75651 Uppsala, Sweden.
出版信息
iScience. 2020 Dec 9;24(1):101910. doi: 10.1016/j.isci.2020.101910. eCollection 2021 Jan 22.
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 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 cm photovoltaic (PV) module area to an up-scaled device with 100 cm area. The NiMoV cathodic catalyst is combined with a NiO anode in alkaline electrolyzer unit thermally connected to synthesized (Ag,Cu) (In,Ga)Se ((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 illumination and NiMoV-NiO electrolyzer shows 9.1% maximum and 8.5% averaged efficiency for 100 h operation.
在这项工作中，开发了一种用于析氢反应的三金属NiMoV催化剂，并对其结构、价态和元素分布进行了表征。通过将V引入NiMo中，驱动10 mA cm电流密度的过电位相对于可逆氢电极从94 mV降低到78 mV。对一种用于太阳能驱动水分解的可扩展独立系统进行了研究，该系统从具有1.6 cm光伏（PV）模块面积的实验室规模装置扩展到具有100 cm面积的放大装置。NiMoV阴极催化剂与NiO阳极在碱性电解槽单元中结合，该单元与合成的（Ag,Cu）（In,Ga）Se（（A）CIGS）PV模块热连接。在25°C至50°C之间研究了3电池和4电池互连PV模块、电解槽以及PV电解槽的产氢性能。在100 mW cm光照下具有4电池（A）CIGS且配备NiMoV-NiO电解槽的PV电解装置在100小时运行中显示出9.1%的最大效率和8.5%的平均效率。
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