Lifetime prediction through accelerated degradation testing of membrane electrode assemblies in direct methanol fuel cells
- Authors
- Bae, Suk Joo; Kim, Seong-Joon; Park, Jong In; Lee, Jin-Hwa; Cho, Hyejung; Park, Jun-Young
- Issue Date
- Sep-2010
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Accelerated degradation test (ADT); Degradation model; Direct methanol fuel cell (DMFC); Membrane electrode assembly (MEA); Reliability; Weibull distribution
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.35, no.17, pp.9166 - 9176
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 35
- Number
- 17
- Start Page
- 9166
- End Page
- 9176
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/174179
- DOI
- 10.1016/j.ijhydene.2010.06.045
- ISSN
- 0360-3199
- Abstract
- To expand the applications of direct methanol fuel cells (DMFCs), the testing time required to evaluate their durability must be shortened. In this article, we present a step-by-step, accelerated degradation test (ADT) procedure for simple application by fuel cell engineers to the membrane electrode assembly (MEA) in DMFCs. Using MEA degradation data obtained under high stress conditions, we provide a method to estimate the lifetime distribution for normal use conditions and derive optimal testing plans for further degradation tests. A bi-exponential model with random coefficients is introduced to represent the nonlinear deterioration path of the MEAs. Based on the lifetimes estimated from the bi-exponential model at higher temperatures, the lifetime distribution at normal use temperature is extrapolated using the Weibull-Arrhenius model as the lifetime-temperature relationship.
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