Pt-free carbon-based fuel cell catalyst prepared from spherical polyimide for enhanced oxygen diffusion

被引：50

作者：

Nabae, Yuta ^{[1
]}

Nagata, Shinsuke ^{[1
]}

Hayakawa, Teruaki ^{[1
]}

Niwa, Hideharu ^{[2
]}

Harada, Yoshihisa ^{[2
,3
]}

Oshima, Masaharu ^{[3
]}

Isoda, Ayano ^{[4
]}

Matsunaga, Atsushi ^{[4
]}

Tanaka, Kazuhisa ^{[4
]}

Aoki, Tsutomu ^{[4
]}

机构：

[1] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, 2-12-1 S8-26 Ookayama, Tokyo 1528552, Japan

[2] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan

[3] Univ Tokyo, Synchrotron Radiat Res Org, SPring 8,1-1-1 Koto, Sayo, Hyogo 6795198, Japan

[4] Toshiba Fuel Cell Power Syst Corp, Kawasaki Ku, 4-1 Ukishima Cho, Kawasaki, Kanagawa 2100862, Japan

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

REDUCTION REACTION; ACTIVE-SITES; ALLOY CATALYSTS; IRON; PHTHALOCYANINE;

D O I：

10.1038/srep23276

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The development of a non-precious metal (NPM) fuel cell catalyst is extremely important to achieve globalization of polymer electrolyte fuel cells due to the cost and scarcity of platinum. Here, we report on a NPM cathode catalyst prepared by the pyrolysis of spherical polyimide nanoparticles that contain small amounts of Fe additive. 60 nm diameter Fe-containing polyimide nanoparticles were successfully synthesized by the precipitation polymerization of pyromellitic acid dianhydride and 1,3,5-tris(4-aminophenyl)benzene with Fe(acac)(3) (acac = acetylacetonate) as an additive. The particles were subsequently carbonized by multistep pyrolysis to obtain the NPM catalyst while retaining the small particle size. The catalyst has good performance and promising durability for fuel cell applications. The fuel cell performance under a 0.2 MPa air atmosphere at 80 degrees C of 1.0 A cm(-2) at 0.46 V is especially remarkable and better than that previously reported.

引用

页数：7

共 29 条

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