Study on the oxygen adsorption property of nitrogen-containing metal-free carbon-based cathode catalysts for oxygen reduction reaction

被引：13

作者：

Kiuchi, Hisao ^{[1
]}

Niwa, Hideharu ^{[1
]}

Kobayashi, Masaki ^{[1
,2
]}

Harada, Yoshihisa ^{[1
,2
]}

Oshima, Masaharu ^{[1
,2
]}

Chokai, Masayuki ^{[3
]}

Nabae, Yuta ^{[3
]}

Kuroki, Shigeki ^{[3
]}

Kakimoto, Masa-aki ^{[3
]}

Ikeda, Takashi ^{[4
]}

Terakura, Kiyoyuki ^{[3
,5
]}

Miyata, Seizo ^{[3
]}

机构：

[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Synchrotsron Radiat Res Org, Sayo, Hyogo 6795165, Japan

[3] Tokyo Inst Technol, Dept Organ & Polymer Mat, Grad Sch Sci & Engn, Meguro Ku, Tokyo 1528552, Japan

[4] Japan Atom Energy Agcy, Synchorotron Radiat Res Unit, Quantum Beam Sci Directorate, Sayo, Hyogo 6795148, Japan

[5] JAIST, Res Ctr Integrated Sci, Nomi, Ishikawa 9231211, Japan

来源：

ELECTROCHIMICA ACTA | 2012年 / 82卷

关键词：

Oxygen reduction reaction; X-ray photoelectron spectroscopy; Oxygen adsorption; Electronic structure; Defects; ELECTROLYTE FUEL-CELLS; HIGH ELECTROCATALYTIC ACTIVITY; ACTIVATED CARBON; FUNCTIONAL-GROUPS; ALLOY CATALYSTS; IRON; NANOTUBES; GRAPHITE; POLYMERS; GRAPHENE;

D O I：

10.1016/j.electacta.2012.06.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We study the characteristics of oxygen adsorption on metal-free carbon-based cathode catalysts derived from nitrogen-containing polyamide (PA) and nitrogen-free phenolic resin (PhRs). Electrochemical analysis and Raman spectroscopy showed higher 2-electron oxygen reduction reaction (ORR) activity and more defect sites in PA than PhRs. The increase in the amount of adsorbed oxygen in PA was also identified by oxygen adsorption isotherms. In situ X-ray photoelectron spectroscopy revealed that graphite-like nitrogen contributes to oxygen adsorption and C=O components are dominant in PA. These experimental results indicate that the adsorbed C=O components near the graphite-like nitrogen can be assigned as active sites for 2-electron ORR. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：291 / 295

页数：5

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