Improved performance of direct methanol fuel cells by anodic treatment

被引：22

作者：

Jeon, Min Ku ^{[1
]}

Won, Jung Yeon

Woo, Seong Ihl

机构：

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

[2] Korea Adv Inst Sci & Technol, Ctr Ultramicrochem Proc Syst, Taejon 305701, South Korea

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 01期

关键词：

D O I：

10.1149/1.2382260

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Anodic treatment of direct methanol fuel cell single cells was carried out at anode potentials of 0.1, 0.4, 0.7, and 1.0 V. An increase in maximum power density by 48% was achieved after anodic treatment at 0.7 V. Electrochemical impedance spectroscopy showed that the methanol electro-oxidation activity of the PtRu catalyst was promoted by the anodic treatment. Oxidation states of Ru changed from Ru metal (43%) and RuO2 (57%) to RuO2 (33%) and RuOxHy (67%), which were studied by X-ray photoelectron spectroscopy. The results showed that the formation of RuOxHy occurred at a potential range of 0.4-0.7 V. (c) 2006 The Electrochemical Society.

引用

页码：B23 / B25

页数：3

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