Amorphous quaternary alloy phosphide hierarchical nanoarrays with pagoda-like structure grown on Ni foam as pH-universal electrocatalyst for hydrogen evolution reaction
Amorphous quaternary alloy phosphide hierarchical nanoarrays with pagoda-like structure grown on Ni foam as pH-universal electrocatalyst for hydrogen evolution reaction
复制标题
在泡沫镍上生长的具有宝塔状结构的非晶四元合金磷化物分级纳米阵列作为析氢反应的pH通用电催化剂
DOI：
10.1016/j.apsusc.2019.05.254
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发表时间：
2019-09-30
影响因子：
6.7
通讯作者：
Li, Yangguang
中科院分区：
文献类型：
--
作者：
Yan, Gang;Tan, Huaqiao;Li, Yangguang
合金磷化物由于其组成、电子结构和活化能的可调性，被广泛应用于电催化析氢反应中，是最具前景的材料之一。本文合成了在泡沫镍上生长的具有宝塔状分级纳米阵列结构的非晶态四元合金磷化物NiCoFeP@NiCoP/NF。合金组分之间的协同效应、上级分级纳米阵列结构和超疏水特性使得NiCoFeP@NiCoP/NF成为对HER和模拟海水具有高电催化性能的pH-通用电催化剂。该催化剂在碱性、酸性和中性水溶液中的过电位分别为77、136和184 mV，达到10 mA cm（-2）。NiCo2O4@Ni [Fe（CN）（6）]/NF在模拟海水中具有稳定的HER性能（超过10 h）和90.5%的法拉第效率。该工作有望为构建具有分级纳米阵列结构的非晶合金磷化物储能与转换开辟一条新的道路。
Alloy phosphides as one of the most prospect materials are used in electrocatalytic hydrogen evolution reaction (HER) because of their adjustable composition, electronic structure and optimized activation energy for the electrocatalytic reactions. Herein, amorphous quaternary alloy phosphide NiCoFeP@NiCoP/NF with pagoda-like hierarchical nanoarrays structure grown on Ni foam is synthesized. The synergy effect between alloy components, the superior hierarchical nanoarrays structure and superaerophobic characteristic enables NiCoFeP@NiCoP/NF to be a pH-Universal electrocatalyst with high electrocatalytic performance toward HER and simulated seawater. To achieve 10 mA cm(-2), this catalyst just required overpotential of 77, 136 and 184 mV in alkaline, acidic and neutral aqueous solution. The NiCo2O4@Ni [Fe (CN)(6)]/NF has stable HER performance (over 10 h) and a Faradic efficiency of 90.5% in simulated seawater. This work is expected to open up a new road for the construction of amorphous alloy phosphides with hierarchical nanoarrays structure for energy storage and conversion.