用于直接甲醇燃料电池阳极的多壁碳纳米管负载的铂钌

Multiwalled carbon nanotube supported PtRu for the anode of direct methanol fuel cells.

作者信息

Prabhuram J, Zhao T S, Tang Z K, Chen R, Liang Z X

机构信息

Department of Mechanical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.

出版信息

J Phys Chem B. 2006 Mar 23;110(11):5245-52. doi: 10.1021/jp0567063.

DOI:10.1021/jp0567063

PMID:16539454

Abstract

The activity of the methanol oxidation reaction of a multiwalled carbon nanotube (MWCNT)-supported PtRu catalyst was investigated and compared with the Vulcan XC-72 carbon-supported catalyst. The PtRu nanoparticles with 1:1 and 7:3 atomic ratios (with similar PtRu loadings and morphological structures) were deposited both on the MWCNTs and on the carbon. Cyclicvoltammetry results demonstrated that the MWCNT-supported PtRu catalyst exhibited a higher mass activity (mA mg(-1) of PtRu) for the methanol oxidation reaction than the carbon-supported PtRu under the condition that both catalysts possess more or less the same PtRu loadings, particle sizes, dispersions, and electrochemical surface area. The direct methanol fuel cell performance test data showed that MWCNT-supported PtRu catalysts yielded about 35-39% higher power densities than the carbon-supported PtRu.

摘要

研究了多壁碳纳米管（MWCNT）负载的PtRu催化剂的甲醇氧化反应活性，并与Vulcan XC - 72碳负载催化剂进行了比较。原子比为1:1和7:3（具有相似的PtRu负载量和形态结构）的PtRu纳米颗粒分别沉积在MWCNT和碳上。循环伏安法结果表明，在两种催化剂具有或多或少相同的PtRu负载量、粒径、分散度和电化学表面积的条件下，MWCNT负载的PtRu催化剂对甲醇氧化反应表现出比碳负载的PtRu更高的质量活性（mA mg(-1)的PtRu）。直接甲醇燃料电池性能测试数据表明，MWCNT负载的PtRu催化剂产生的功率密度比碳负载的PtRu高约35 - 39%。