Cobalt, nitrogen-codoped carbon quantum dots as a synergistic catalyst for oxygen reduction reaction

被引：5

作者：

Wang, Huihua ^{[2
]}

Yang, Yanmei ^{[1
]}

Qu, Tianpeng ^{[2
]}

Kang, Zhenhui ^{[1
]}

Wang, Deyong ^{[2
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China

[2] Soochow Univ, Sch Iron & Steel, Suzhou 215000, Peoples R China

来源：

GREEN PROCESSING AND SYNTHESIS | 2015年 / 4卷 / 04期

基金：

中国国家自然科学基金;

关键词：

catalytic ability; Co/N/C electrocatalyst; durability; onset potential; ORR; HIGH ELECTROCATALYTIC ACTIVITY; ELECTROLYTE FUEL-CELLS; NONPRECIOUS CATALYST; CATHODE CATALYST; GRAPHENE; CHALLENGES; COMPOSITE; OXIDATION; NANODOTS; ARRAYS;

D O I：

10.1515/gps-2015-0030

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A cobalt/nitrogen/carbon (Co/N/C) electrocatalyst has been successfully synthesized by the solvothermal method using cobalt acetate (Co(Ac)(2)), NH3 center dot H2O and carbon quantum dots (CQDs) as the starting materials. The oxygen reduction reaction (ORR) activity of Co/N/C is better than single nitrogen-doped CQDs (NC) or cobalt-doped CQDs in terms of the onset potential and peak potential. The Co/N/C catalyst also exhibits better methanol durability and stability compared to the commercial Pt/C (20%). The electron-transferred number of Co/N/C for ORR is calculated to be about 3.51, indicating a four-electron pathway. Such a novel and high-efficient codoped carbon-based catalyst could be a promising substitute for commercial Pt/C in fuel cells as well as other energy storage and conversion systems.

引用

页码：275 / 282

页数：8

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