A Superaerophobic Bimetallic Selenides Heterostructure for Efficient Industrial-Level Oxygen Evolution at Ultra-High Current Densities

被引：40

作者：

Jiaxin Yuan ^{[1
]}

Xiaodi Cheng ^{[1
]}

Hanqing Wang ^{[1
]}

Chaojun Lei ^{[1
]}

Sameer Pardiwala ^{[1
]}

Bin Yang ^{[1
]}

Zhongjian Li ^{[1
]}

Qinghua Zhang ^{[2
]}

Lecheng Lei ^{[1
]}

Shaobin Wang ^{[3
]}

Yang Hou ^{[1
,4
,5
]}

机构：

[1] Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University

[2] Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,College of Chemical and Biological Engineering, Zhejiang University

[3] School of Chemical Engineering and Advanced Materials, The University of Adelaide

[4] Institute of Zhejiang University-Quzhou

[5] Ningbo Research Institute, Zhejiang University

来源：

Nano-Micro Letters | 2020年 / 12卷 / 08期

关键词：

D O I：

暂无

中图分类号：

TQ426 [催化剂（触媒）]; TQ116.14 [氧气、液氧的生产与储运];

学科分类号：

081705 [工业催化]; 082003 [油气储运工程];

摘要：

Cost-e ective and stable electrocatalysts with ultra-high current densities for electrochemical oxygen evolution reaction(OER) are critical to the energy crisis and environmental pollution. Herein, we report a superaerophobic three dimensional(3D) heterostructured nanowrinkles of bimetallic selenides consisting of crystalline NiSe2 and NiFe2Se4 grown on NiFe alloy(NiSe2/NiFe2Se4@NiFe) prepared by a thermal selenization procedure. In this unique 3D heterostructure, numerous nanowrinkles of NiSe2/NiFe2Se4 hybrid with a thickness of ～ 100 nm are grown on NiFe alloy in a uniform manner. Profiting by the large active surface area and high electronic conductivity, the superaerophobic NiSe2/NiFe2Se4@NiFe heterostructure exhibits excellent electrocatalytic activity and durability towards OER in alkaline media, outputting the low potentials of 1.53 and 1.54 V to achieve ultra-high current densities of 500 and 1000 mA cm-2, respectively, which is among the most active Ni/Fe-based selenides, and even superior to the benchmark Ir/C catalyst. The in-situ derived FeOOH and NiOOH species from NiSe2/NiFe2Se4@NiFe are deemed to be e cient active sites for OER.

引用

页码：217 / 228

页数：12

共 29 条

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