In-situ reduced petal-like cobalt on Ni foam based cobaltosic oxide as an efficient catalyst for hydrogen peroxide electroreduction

被引：21

作者：

Song, Congying ^{[1
]}

Zhang, Dongming ^{[2
]}

Ye, Ke ^{[1
]}

Zeng, Weijia ^{[1
]}

Yang, Xueying ^{[1
]}

Wang, Yazhou ^{[1
]}

Shen, Yingcai ^{[3
]}

Cao, Dianxue ^{[1
]}

Cheng, Kui ^{[1
]}

Wang, Guiling ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Supertight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

[2] North Univ China, Res Ctr Shanxi Prov High Grav Chem Engn & Technol, Taiyuan 030051, Peoples R China

[3] Yunnan Univ, Inst Int Rivers & Ecosecur, Environm Engn, Kunming 650500, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2017年 / 788卷

基金：

中国国家自然科学基金; 黑龙江省自然科学基金;

关键词：

Hydrogen peroxide electroreduction; Co/Co3O4 composite electrode; Petals; In-situ reduction; Electrocatalyst; ENHANCED ELECTROCATALYTIC ACTIVITY; LITHIUM-AIR BATTERIES; CARBON-FIBER CLOTH; H2O2; ELECTROREDUCTION; FUEL-CELLS; HIGH-PERFORMANCE; ION BATTERIES; PD NANOPARTICLES; ALKALINE-MEDIUM; BIFUNCTIONAL CATALYST;

D O I：

10.1016/j.jelechem.2017.02.003

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Petal shaped Co/Co3O4 composite electrocatalyst with a special structure used as a cathode for H2O2 electroreduction is obtained by a route of hydrothermal synthesis and in-situ chemical reduction. The phase composition and microstructure of the electrocatalyst are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Electrochemical performance of H2O2 electroreduction on the Co/Co3O4 petals (Ps) is explored by cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectrometry (EIS). The Co/Co3O4 Ps exhibits a higher conductivity than single Co3O4, which leads to a better catalytic activity and stability toward H2O2 electroreduction. In a solution of 3 mol NaOH and 0.5 mol L-1 H2O2, the current density of H2O2 electroreduction on Co/Co3O4 Ps is 440 mA cm(-2) at -0.8 V, higher than that on Co3O4, which make the obtained Co/Co3O4 Ps an excellent alternative catalyst for H2O2 fuel cell. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：74 / 82

页数：9