Highly active carbon-supported Ni catalyst prepared by nitrate decomposition with a sacrificial agent for the hydrogen oxidation reaction in alkaline medium

被引：18

作者：

Simonov, Pavel A. ^{[1
,2
]}

Cherstiouk, Olga V. ^{[1
,2
]}

Kuznetsov, Aleksey N. ^{[1
,2
]}

Zaikovskii, Vladimir I. ^{[1
,2
]}

Kardash, Tatyana Yu. ^{[1
,2
]}

Oshchepkov, Alexandr G. ^{[1
]}

Bonnefont, Antoine ^{[3
]}

Savinova, Elena R. ^{[4
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Univ Strasbourg, Inst Chim Strasbourg, UMR 7177, CNRS, F-67070 Strasbourg, France

[4] Univ Strasbourg, Inst Chim & Proc Energie Environm & Sante, UMR 7515, CNRS, F-67087 Strasbourg, France

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 852卷

基金：

俄罗斯基础研究基金会;

关键词：

Hydrogen oxidation reaction; Alkaline solutions; Nickel; Ketjenblack DJ-600; Lyophilization; NICKEL NANOPARTICLES; ELECTRODE-REACTIONS; ELECTROCATALYSTS; PARTICLES; EVOLUTION; KINETICS;

D O I：

10.1016/j.jelechem.2019.113551

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ketjenblack EC-600 JD supported Ni/C electrocatalysts with a nickel content of 50 and 60 wt% were prepared by impregnation with either Ni(OAc)(2) or a mixture of Ni(OAc)(2) and Ni(NO3)(2) precursors, followed by freeze-drying and reduction with H-2. XRD, TEM and cyclic voltammetry were applied for characterizing the catalysts. The use of Ni(OAc)(2) as a sacrificial agent during decomposition of Ni(NO3)(2) allows one to decrease significantly the size of nickel nanoparticles (from 37 to 12 nm) at a very high metal loading. Benefiting from the high dispersion and high specific activity, 60 % Ni/Ketjenblack EC-600 JD possesses remarkable mass activity (7 A.g(Ni)(-1)) in the hydrogen oxidation reaction in an alkaline electrolyte.

引用

页数：6

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