NiSe Nanowire Film Supported on Nickel Foam: An Efficient and Stable 3D Bifunctional Electrode for Full Water Splitting
NiSe Nanowire Film Supported on Nickel Foam: An Efficient and Stable 3D Bifunctional Electrode for Full Water Splitting
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泡沫镍支撑的 NiSe 纳米线薄膜：一种高效稳定的 3D 双功能电极，可实现全水分解
DOI：
10.1002/anie.201503407
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发表时间：
2015-08-03
影响因子：
16.6
通讯作者：
Sun, Xuping
中科院分区：
文献类型：
--
作者：
Tang, Chun;Cheng, Ningyan;Sun, Xuping
由地球上丰富的元素制成的活性稳定的电催化剂是通过电解水分解制氢的关键。介绍了使用 NaHSe 作为 Se 源，通过对 NF 进行水热处理，在泡沫镍 (NiSe/NF) 上原位生长 NiSe 纳米线薄膜。当用作3D析氧电极时，NiSe/NF表现出高活性，达到20mAcm(-2)所需的过电势为270mV，并且在1.0M KOH中具有很强的耐久性，并且在NiSe表面形成的NiOOH物质作为实际的催化位点。该系统对于催化碱性介质中的析氢反应也非常有效。这种双功能电极可在1.63V的电池电压下实现10mAcm(-2)的高性能碱性水电解槽。
Active and stable electrocatalysts made from earth-abundant elements are key to water splitting for hydrogen production through electrolysis. The growth of NiSe nanowire film on nickel foam (NiSe/NF) insitu by hydrothermal treatment of NF using NaHSe as Se source is presented. When used as a 3D oxygen evolution electrode, the NiSe/NF exhibits high activity with an overpotential of 270mV required to achieve 20mAcm(-2) and strong durability in 1.0M KOH, and the NiOOH species formed at the NiSe surface serves as the actual catalytic site. The system is also highly efficient for catalyzing the hydrogen evolution reaction in basic media. This bifunctional electrode enables a high-performance alkaline water electrolyzer with 10mAcm(-2) at a cell voltage of 1.63V.