NiCoP nanopeapods embedded in carbon nanotube arrays as bifunctional catalysts for efficient overall water splitting

被引：36
作者：
Bian, J. L. [1 ]
Song, Z. Y. [1 ]
Zhang, Y. Z. [1 ]
Cheng, C. W. [1 ,2 ]
机构：
[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai Key Lab Special Artificial Microstruct M, Shanghai 200092, Peoples R China
[2] Inst Dongguan Tongji Univ, Dongguan 523808, Guangdong, Peoples R China
来源：
MATERIALS TODAY NANO | 2019年 / 8卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Eelectrocatalyst; Hydrogen evolution reactions; Oxygen evolution reaction; Bimetallic phosphides; HYDROGEN EVOLUTION; COBALT-PHOSPHIDE; OXYGEN VACANCIES; ELECTROCATALYST; ALKALINE; NANOSHEETS; FOAM;
D O I：
10.1016/j.mtnano.2019.100053
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The development of earth-abundant and durable electrocatalyts with high activity is important to realize efficient overall water splitting. Herein, we report the design and fabrication of a bifunctional catalyst of NiCoP nanopeapods embedded in carbon nanotube arrays (NiCoP nanopeapods/CNTs) for overall water splitting. The unique nanopeapods structure and synergistic effect between the bimetallic phosphides and carbon nanotubes provide them excellent bifunctional electroactivity and structural stability. Specifically, the NiCoP nanopeapod/CNT electrode requires an overpotential of 82 mV and 250 mV to reach a current density of 10 mA cm(-2) in 1 M KOH medium for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Moreover, the NiCoP nanopeapods/CNTs are used as both the cathode and anode for an alkaline electrolyzer, which only requires a cell voltage of 1.558 V at 10 mA cm(-2), which is superior to most of the non-precious metal catalysts for water splitting. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：8
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