Water-sprouted, plasma-enhanced Ni-Co phospho-nitride nanosheets boost electrocatalytic hydrogen and oxygen evolution

被引：77

作者：

Jin, Rongxian ^{[1
]}

Huang, Jun ^{[2
,6
]}

Chen, Guangliang ^{[1
]}

Chen, Wei ^{[2
]}

Ouyang, Bo ^{[3
,4
]}

Chen, Dongliang ^{[1
]}

Kan, Erjun ^{[3
,4
]}

Zhu, Hao ^{[2
]}

Li, Chaorong ^{[1
]}

Yang, Dezheng ^{[5
]}

Ostrikov, Kostya ^{[6
,7
]}

机构：

[1] Zhejiang Sci Tech Univ, Sch Mat Sci & Engn, Hangzhou 310018, Peoples R China

[2] Gannan Normal Univ, Sch Phys & Elect Informat, Ganzhou 341000, Jiangxi, Peoples R China

[3] Nanjing Univ Sci & Technol, Dept Appl Phys, Xiaolingwei 200, Nanjing 210094, Peoples R China

[4] Nanjing Univ Sci & Technol, Inst Energy & Microstruct, Xiaolingwei 200, Nanjing 210094, Peoples R China

[5] Shihezi Univ, Sch Sci, Shihezi 832003, Peoples R China

[6] Queensland Univ Technol, Sch Chem & Phys, Brisbane, Qld 4000, Australia

[7] Queensland Univ Technol, Ctr Mat Sci, Brisbane, Qld 4000, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2020年 / 402卷 / 402期

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

Electrocatalysis; Nanoscale plasma procesisng; Bimetal phosphide catalyst; Plasma nitrogen doping; Eco-friendly synthesis; ORGANIC FRAMEWORKS; BIFUNCTIONAL ELECTROCATALYSTS; HIGHLY EFFICIENT; HIGH-PERFORMANCE; ARRAYS; CONSTRUCTION; NICOP; FOAM;

D O I：

10.1016/j.cej.2020.126257

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Chemical waste-free, in situ synthesis of customized earth-abundant-metal based catalysts for high-efficiency water splitting still remains a formidable challenge. Here, Ni-Co hydroxide nanosheets (NCHS) are sprouted from Ni-Co foam (NCF) using an eco-friendly, pure-water-based method, and then are phosphorized and nitrided in N-2 + P plasmas. The resulting N-doped Ni-Co phosphide catalyst (N-NiCoPx/NCF) exhibits excellent electrocatalytic performance, heralded by the low overpotentials of N-NiCoPx/NCF for generating a current density of 10 and 400 mA cm(-2) (j(10) and j(400)) in 1 M KOH of only 23 and 191 mV for the hydrogen evolution reaction (HER), and 298 and 410 mV for oxygen evolution reaction (OER), as well as by the low decay of high current density (j(100)) in the HER (6.02%) and OER (3.07%) processes for 100 h. Ab inito numerical simulations confirm that Co atom bonded with N represents the active center for overall water splitting.

引用

页数：12

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