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首页> 外文期刊>ACS applied materials & interfaces >Hydrotalcite-like Ni(OH)(2) Nanosheets in Situ Grown on Nickel Foam for Overall Water Splitting
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Hydrotalcite-like Ni(OH)(2) Nanosheets in Situ Grown on Nickel Foam for Overall Water Splitting

机译:镍泡沫上原位生长的水滑石状Ni(OH)(2)纳米片用于总水分解

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摘要

Designing economical and high-efficiency electrocatalysts for overall water splitting is urgently needed but remains a long and arduous task. Herein, we synthesized hydrotalcite-like Ni(OH)(2) nanosheets growing on Ni foam (Ni(OH)(2)/NF) via a facile one-pot hydrothermal method. With the assistance of a rotating oven, Ni(OH)(2) nanosheets demonstrate a regular hexagonal morphology and homogeneous distribution. The resultant Ni(OH)(2)/NF electrode shows superior electrocatalytic activity and durability for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), as well as the overall water splitting. The Ni(OH)(2)/NF electrode delivers 20 mA.cm(-2) at an overpotential of 172 mV for HER, 50 mA.cm(-2) at an overpotential of 330 mV for OER, and 10 mA.cm(-2) at a cell voltage of 1.68 V for water electrolysis in 1.0 M KOH. The present study demonstrates a feasible and effective strategy to prepare highly efficient electrocatalysts for water electrolysis.
机译:迫切需要设计用于整体水分解的经济高效的电催化剂,但这仍然是一项艰巨而艰巨的任务。在这里,我们通过方便的一锅水热法合成了在泡沫镍(Ni(OH)(2)/ NF)上生长的类水滑石状的Ni(OH)(2)纳米片。借助旋转烤箱,Ni(OH)(2)纳米片表现出规则的六角形形态和均匀分布。所得的Ni(OH)(2)/ NF电极对氢气析出反应(HER)和氧气析出反应(OER)以及整个水分解显示出优异的电催化活性和耐久性。 Ni(OH)(2)/ NF电极对于HER的172 mV的过电势提供20 mA.cm(-2),对于OER的330 mV的过电势提供50 mA.cm(-2)和10 mA。电池电压为1.68 V时在cm(-2)时可在1.0 M KOH中进行水电解。本研究表明制备水电解高效电催化剂的可行和有效的策略。

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