Determination of DMFC deterioration during long-term operation

被引：43

作者：

Kim, Ho ^{[1
]}

Shin, Se-Jong

Park, Young-Gil

Song, Joohan

Kim, Hee-Tak

机构：

[1] Samsung SDI Co Ltd, Anal Team, Corp R&D Ctr, Giheung 449902, Yong In, South Korea

[2] Samsung SDI Co Ltd, Energy Lab, Corp R&D Ctr, Suwon 443731, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 160卷 / 01期

关键词：

direct methanol fuel cell; deterioration; long-term operation; impedance;

D O I：

10.1016/j.jpowsour.2005.12.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new method to analyze deteriorated direct methanol fuel cells (DMFCs) by combining electrochemical impedance analysis and physicochemical investigations is proposed. To make a comparison, one pristine membrane electrode assembly (MEA) and one deteriorated MEA, following 1000 h of continuous operation, were prepared. A unique impedance analysis enabled the separation of the impedance values for the cathode and the anode, and it was possible to determine that the deterioration of the MEA mainly came from the deterioration of the cathode. Several physicochemical investigations were made to show the relationship between the electrochemical properties and the deterioration of the MEA. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：440 / 445

页数：6

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