In Situ XAFS and HAXPES Analysis and Theoretical Study of Cobalt Polypyrrole Incorporated on Carbon (CoPPyC) Oxygen Reduction Reaction Catalysts for Anion-Exchange Membrane Fuel Cells

被引：18

作者：

Asazawa, Koichiro ^{[1
,2
]}

Kishi, Hirofumi ^{[1
,2
]}

Tanaka, Hirohisa ^{[1
]}

Matsumura, Daiju ^{[3
]}

Tamura, Kazuhisa ^{[3
]}

Nishihata, Yasuo ^{[3
]}

Saputro, Adhitya Gandaryus ^{[4
]}

Nakanishi, Hiroshi ^{[4
]}

Kasai, Hideaki ^{[4
]}

Artyushkova, Kateryna ^{[5
]}

Atanassov, Plamen ^{[5
]}

机构：

[1] Daihatsu Motor Co Ltd, Frontier Technol R&D Div, Shiga 5202593, Japan

[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[3] Japan Atom Energy Agcy, Quantum Beam Sci Ctr, Mikazuki, Hyogo 6795148, Japan

[4] Osaka Univ, Grad Sch Engn, Dept Appl Phys, Suita, Osaka 5650871, Japan

[5] Univ New Mexico, Chem & Nucl Engn Dept, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 44期

关键词：

DENSITY; MECHANISM;

D O I：

10.1021/jp507534f

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：

Non-noble metal electrocatalysts not only are a solution to limited resources but also achieve higher efficiency for fuel cells, especially in alkaline media such as alkaline membrane fuel cells. Co-polypyrrole-based electrocatalysts provide high oxygen reduction reaction (ORR) reactivity, but the active sites and reaction mechanism have yet to be elucidated fully. In this study, ex situ and in situ synchrotron characterization and theoretical study have been combined to evaluate the ORR mechanism on two possible active sites consisting of Co coordinated with pyrrolic nitrogen and Co coordinated with pyridinic nitrogen.

引用

页码：25480 / 25486

页数：7

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