PtRu alloy nanoparticles supported on nanoporous gold as an efficient anode catalyst for direct methanol fuel cell

被引：59
|
作者：
Tian, Miaomiao [1 ,2 ]
Shi, Shuai [1 ,2 ]
Shen, Yongli [1 ,2 ]
Yin, Huiming [1 ,2 ]
机构：
[1] Tianjin Univ Technol, Tianjin Key Lab Adv Funct Porous Mat, Tianjin 300384, Peoples R China
[2] Tianjin Univ Technol, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2019年 / 293卷
基金：
中国国家自然科学基金;
关键词：
Nanoporous gold; PtRu; Methanol oxidation; Fuel cell; FUNCTIONALIZED CARBON NANOTUBES; ONE-POT SYNTHESIS; ELECTROCATALYTIC ACTIVITY; PLATINUM; OXIDATION; CO; NANODENDRITES; NANOCOMPOSITE; RUTHENIUM; SURFACE;
D O I：
10.1016/j.electacta.2018.10.048
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An efficient and CO-tolerant anode catalyst for direct methanol fuel cell is fabricated by depositing PtRu alloy nanoparticles (similar to 3 nm) on nanoporous gold film (NPG-PtRu). Those catalysts with various Pt/Ru molar ratios are prepared by using linear scanning voltammetry and their electrocatalytic activities are measured for methanol oxidation reaction (MOR) and CO oxidation. Owing to the notably reduced CO adsorption energy, NPG-PtRu catalyst with Pt/Ru molar ratio of similar to 2:1 exhibits close CO-tolerance but 3-fold enhanced MOR activity in contrast to commercial JM-PtRu/C, and thus is chosen as the anode in direct methanol fuel cell. The membrane electrode assembly with anode of NPG-PtRu (0.2 mgPt cm(-2) and 0.3 mgAu cm(-2)) shows a maximum power density of 96mWcm(-2), about 6-fold enhancement of Pt efficiency than that of commercial PtRu/C (1 mgPt cm(-2), 78mWcm(-2)) under similar conditions. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：390 / 398
页数：9
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