X-ray photoemission spectroscopy analysis of N-containing carbon-based cathode catalysts for polymer electrolyte fuel cells

被引：90

作者：

Niwa, Hideharu ^{[1
]}

Kobayashi, Masaki ^{[1
,2
]}

Horiba, Koji ^{[1
,2
]}

Harada, Yoshihisa ^{[1
,2
]}

Oshima, Masaharu ^{[1
,2
]}

Terakura, Kiyoyuki ^{[3
]}

Ikeda, Takashi ^{[4
]}

Koshigoe, Yuka ^{[5
]}

Ozaki, Jun-ichi ^{[5
]}

Miyata, Seizo ^{[6
]}

Ueda, Shigenori ^{[7
]}

Yamashita, Yoshiyuki ^{[7
]}

Yoshikawa, Hideki ^{[7
]}

Kobayashi, Keisuke ^{[7
]}

机构：

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

[2] Univ Tokyo, Synchrotron Radiat Res Org, Bunkyo Ku, Tokyo 1138656, Japan

[3] JAIST, Res Ctr Integrated Sci, Nomi Ishikawa 9231292, Japan

[4] JAEA, Quantum Beam Sci Directorate, Sayo, Hyogo 6795148, Japan

[5] Gunma Univ, Grad Sch Engn, Dept Chem & Environm Engn, Gunma 3768515, Japan

[6] New Energy & Ind Technol Dev Org, Saiwai Ku, Kanagawa 2128554, Japan

[7] NIMS, Sayo, Hyogo 6795148, Japan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 03期

关键词：

Polymer electrolyte fuel cell; Cathode; Oxygen reduction reaction; X-ray photoemission spectroscopy; Carbon alloy catalysts; Electronic structure; OXYGEN-REDUCTION ACTIVITY; COMPOSITE CATALYSTS; HEAT-TREATMENT; ACTIVE-SITES; ENHANCEMENT; ABSORPTION; FE; COMPLEXES; GRAPHITE; SPECTRA;

D O I：

10.1016/j.jpowsour.2010.08.054

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the electronic structure of three different types of N-containing carbon-based cathode catalysts for polymer electrolyte fuel cells observed by hard X-ray photoemission spectroscopy. Prepared samples are derived from: (1) melamine and poly(furfuryl alcohol), (2) nitrogen-doped carbon black and (3) cobalt phthalocyanine and phenolic resin. C 1s spectra show the importance of sp(2) carbon network formation for the oxygen reduction reaction (ORR) activity. N 1s spectra of the carbon-based cathode catalysts are decomposed into four components identified as pyridine-like, pyrrole- or cyanide-like, graphite-like, and oxide nitrogen. Samples having high oxygen reduction reaction activity in terms of oxygen reduction potential contain high concentration of graphite-like nitrogen. O 1s spectra are similar among carbon-based cathode catalysts of different oxygen reduction reaction activity. There is no correlation between the ORR activity and oxygen content. Based on a quantitative analysis of our results, the oxygen reduction reaction activity of the carbon-based cathode catalysts will be improved by increasing concentration of graphite-like nitrogen in a developed sp(2) carbon network. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1006 / 1011

页数：6

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