Perfluorosulfonic acid-functionalized Pt/graphene as a high-performance oxygen reduction reaction catalyst for proton exchange membrane fuel cells

被引：19

作者：

Nam, Kwan-Woo ^{[1
]}

Song, Jongchan ^{[2
]}

Oh, Keun-Hwan ^{[1
]}

Choo, Min-Ju ^{[2
]}

Park, Hyun Ah ^{[1
]}

Park, Jung-Ki ^{[1
,2
]}

Choi, Jang Wook ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Grad Sch EEWS WCU, KAIST Inst NanoCentury, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2013年 / 17卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Proton exchange membrane fuel cell; Graphene sheet; Perfluorosulfonic acid; Oxygen reduction reaction; Durability; REDUCED GRAPHENE OXIDE; PLATINUM NANOPARTICLES; EFFICIENT SYNTHESIS; CARBON NANOTUBES; ELECTROCATALYSTS; METHANOL; STABILITY; STABILIZATION; NANOCATALYSTS; NANOSHEETS;

D O I：

10.1007/s10008-012-1879-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum nanoparticles (Pt NPs) on carbon black (CB) have been used as catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells for a while. However, this catalyst has suffered from aggregation and dissolution of Pt NPs as well as CB dissolution. In this study, we resolve those issues by developing perfluorosulfonic acid (PFSA)-functionalized Pt/graphene as a high-performance ORR catalyst. The noncovalently bonded PFSA remarkably decreases the dissolution and aggregation of Pt NPs. Moreover, unlike typical NP functionalization with other capping agents, PFSA is a proton conductor and thus efficiently develops a triple-phase boundary. These advantageous features are reflected in the improved cell performance in electrochemical active surface area, catalytic activity, and long-term durability, compared to those of the commercial Pt/C catalysts and graphene-based catalysts with no such treatment.

引用

页码：767 / 774

页数：8

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