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ChemSusChem
Communication

Low Pt‐Loaded Mesoporous Sodium Germanate as a High‐Performance Electrocatalyst for the Oxygen Reduction Reaction

Xiaoxia Zhou

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

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Lisong Chen

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

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Gang Wan

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

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Yu Chen

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

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Qinglu Kong

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

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Prof. Dr. Hangrong Chen

Corresponding Author

E-mail address: hrchen@mail.sic.ac.cn

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

Jiangsu National Synergetic Innovation Center for Advanced Materials

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Prof. Dr. Jianlin Shi

Corresponding Author

E-mail address: jlshi@mail.sic.ac.cn

Fax: +86) 21‐5241‐3122

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, No. 1295 Ding-xi Road, Shanghai, 200050 P.R. China

Jiangsu National Synergetic Innovation Center for Advanced Materials

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First published: 19 August 2016
https://doi.org/10.1002/cssc.201600785
Citations: 6
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Abstract

Although Pt/C catalysts show relatively high activities for the oxygen reduction reaction (ORR) and great potential for use in polymer electrolyte membrane fuel cells, the large amount of Pt required and the poor stability of Pt/C‐based catalysts remain big challenges. Herein, mesoporous Na4Ge9O20 micro‐crystals have been successfully synthesized to serve as a new kind of electrocatalyst support owing to its special structural characteristics and high structural stability. After loading a low amount of Pt (5 wt %) nanoparticles of 2–5 nm in diameter, the obtained mesoporous Pt/Na4Ge9O20 composite shows not only high electrocatalytic activity for ORR in both acidic and alkaline electrolyte media, which are comparable to those of conventional 20 wt % Pt/C, but also remarkably enhanced Pt mass‐specified ORR current density and durability. Synergetic catalytic effects between loaded Pt and the support for the ORR activity has been proposed.