Bifunctional nanoporous Ni-Zn electrocatalysts with super-aerophobic surface for high-performance hydrazine-assisted hydrogen production
Bifunctional nanoporous Ni-Zn electrocatalysts with super-aerophobic surface for high-performance hydrazine-assisted hydrogen production
复制标题
具有超疏气表面的双功能纳米孔镍锌电催化剂用于高性能肼辅助制氢
DOI：
10.1088/1361-6528/ab9396
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发表时间：
2020-05
期刊：
影响因子：
3.5
通讯作者：
Pengfei Xing
中科院分区：
文献类型：
--
作者：
Han Zhang;Zhongbao Feng;Lin Wang;Dagang Li;Pengfei Xing
本研究提出了一种基于纳米片阵列的双功能多孔镍锌电催化剂，用取代阳极肼氧化反应（HzOR）取代析氧反应来辅助制氢的有效方法。Ni-Zn催化剂表现出优异的HzOR性能，在0.7 V下电流密度高达970 mA cm−2，在5000 s后活性为初始活性的93.8%，同时在10 mA cm−2下为析氢反应提供68 mV的过电位。此外，采用Ni-Zn催化剂作为阳极和阴极构建了电解槽，在0.497 V的超低电池电压下达到100 mA cm - 2，并且在10小时内具有出色的稳定性。优越的电催化性能可归因于其具有大活性表面积的多孔结构，高导电性，最重要的是Ni-Zn表面的超疏氧性质。本研究也为设计和构建具有超疏气表面的多孔结构非贵金属双功能电催化剂提供了一种新的途径，用于节能制氢。
In the present study, an effective approach is proposed to replace the oxygen evolution reaction with the substituted anodic hydrazine oxidation reaction (HzOR) to assist in hydrogen generation based on a bifunctional porous Ni-Zn electrocatalyst with nanosheet arrays. The Ni-Zn catalyst exhibits an extraordinary HzOR performance with a high current density of 970 mA cm−2 at 0.7 V, and 93.8% of its initial activity after 5000 s, simultaneously delivering an overpotential of 68 mV at 10 mA cm−2 for the hydrogen evolution reaction. Moreover, the electrolytic cell is constructed employing Ni-Zn catalysts as both the anode and cathode, achieving 100 mA cm−2 at an ultralow cell voltage of 0.497 V with an outstanding stability over 10 h. The superior electrocatalytic performance can be ascribed to its porous structure with large active surface area, high electrical conductivity, and most importantly the super-aerophobic nature of the Ni-Zn surface. This work also provides a novel approach to designing and constructing porous structured non-noble metal bifunctional electrocatalysts with super-aerophobic surface to be used for energy-saving hydrogen production.
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影响因子：
16.6
作者：
Lu, Xunyu;Zhao, Chuan
通讯作者：
Zhao, Chuan
影响因子：
29.4
作者：
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通讯作者：
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影响因子：
27.8
作者：
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通讯作者：
Zhaoyang Wang;Lin Xu;Fuzhi Huang;Long Qu;Jiantao Li;K. Owusu;Zi'ang Liu;Zifeng Lin;Binhua Xiang-Bi
DOI：
10.1016/j.apcatb.2018.09.043
发表时间：
2019-02
期刊：
Applied catalysis. B, Environmental
影响因子：
--
作者：
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通讯作者：
He Wen;L. Gan;H. Dai;Xiao-Ping Wen;Linen Wu;Hui Wu;Ping Wang
影响因子：
9.2
作者：
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通讯作者：
Ye, Q