Ultrahigh activity of Pd decorated Ir/C catalyst for formic acid electro-oxidation

被引：30

作者：

Chen, Jinwei ^{[1
]}

Li, Yuanjie ^{[2
]}

Gao, Zichen ^{[1
]}

Wang, Gang ^{[1
]}

Tian, Jing ^{[1
]}

Jiang, Chunping ^{[1
]}

Zhu, Shifu ^{[1
]}

Wang, Ruilin ^{[1
]}

机构：

[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China

[2] Dongfang Elect Corp, Cent Res Acad, Chengdu 611731, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 37卷

关键词：

Direct formic acid fuel cell; Electra-oxidation; Palladium; Iridium; Core-shell structure; NANOPARTICLES; PERFORMANCE; OXIDATION;

D O I：

10.1016/j.elecom.2013.10.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A core-shell like Ir/C@Pd catalyst with ultrahigh activity toward formic acid electro-oxidation (FAEO) was prepared by decorating Pd shell on the Ir NPs for the first time. The structure has been demonstrated by XRD, XPS, TEM, EDS and electrochemical techniques. The mass-normalized current density at 0.08 V (vs. SCE) of Ir/C@Pd for FAEO is 3756 mA mg(pd)(-1), which is about 338 and 4.16 times higher than that of the PdIr/C and commercial Pd/C, respectively. The remarkable performance of Ir/C@Pd should be attributed to its unique core-shell like structure and the enhanced electronic coupling between the Ir and Pd, which was confirmed by XPS results. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：24 / 27

页数：4

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