Effects of environmental factors on corrosion behaviors of metal-fiber porous components in a simulated direct methanol fuel cell environment

Wei Yuan; Bo Zhou; Yong Tang; Zhao-chun Zhang; Jun Deng

doi:10.1007/s12613-014-0989-3

Volume 21 Issue 9

Sep. 2014

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International Journal of Minerals, Metallurgy and Materials > 2014 > 21(9): 913-918. > DOI: 10.1007/s12613-014-0989-3

Wei Yuan, Bo Zhou, Yong Tang, Zhao-chun Zhang, and Jun Deng, Effects of environmental factors on corrosion behaviors of metal-fiber porous components in a simulated direct methanol fuel cell environment, Int. J. Miner. Metall. Mater., 21(2014), No. 9, pp.913-918. https://dx.doi.org/10.1007/s12613-014-0989-3

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Effects of environmental factors on corrosion behaviors of metal-fiber porous components in a simulated direct methanol fuel cell environment

Author Affilications

Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China

Funds:

This work was financially supported by the Natural Science Foundation of Guangdong Province, China (No. S2013040016899), the Fundamental Research Funds for Central Universities of China (No. 2013ZM0003), the National Natural Science Foundation of China (No. 51275180), and the Open Fund of Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures (No. 2013001).

Received: 12 December 2013; Revised: 10 March 2014; Accepted: 19 March 2014; Available Online: 09 June 2021

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Abstract

Abstract

To enable the use of metallic components in direct methanol fuel cells (DMFCs), issues related to corrosion resistance must be considered because of an acid environment induced by the solid electrolyte. In this study, we report the electrochemical behaviors of metal-fiber-based porous sintered components in a simulated corrosive environment of DMFCs. Three materials were evaluated: pure copper, AISI304, and AISI316L. The environmental factors and related mechanisms affecting the corrosion behaviors were analyzed. The results demonstrated that AISI316L exhibits the best performance. A higher SO₄^2- concentration increases the risk of material corrosion, whereas an increase in methanol concentration inhibits corrosion. The morphological features of the corroded samples were also characterized in this study.
- corrosion,
- metal fibers,
- porous,
- sintering,
- direct methanol fuel cells,
- environmental factors

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