降级(电信)
质子交换膜燃料电池
非参数统计
参数统计
关闭
电解质
耐久性
计算机科学
核工程
材料科学
燃料电池
可靠性工程
工艺工程
电极
化学
化学工程
工程类
统计
数学
数据库
电信
物理化学
作者
Seung Yong Bae,Seong-Joon Kim,Jong In Park,Chan Woong Park,Jinhwa Lee,In‐Hyuck Song,Naesung Lee,Ki-Bum Kim,Jun-Young Park
标识
DOI:10.1016/j.ijhydene.2012.03.104
摘要
To expand commercial applications of polymer electrolyte membrane fuel cells (PEMFCs), the evaluation time for their durability must be shortened. This article provides a straightforward accelerated degradation testing (ADT) procedure for PEMFC for easy and quick implementation of the procedure. The ADT procedure includes statistical modeling of degradation patterns of membrane electrode assemblies (MEAs) in PEMFCs under startup–shutdown cycling conditions. For this purpose, we propose a nonparametric degradation model to describe the nonlinear performance degradation paths of PEMFC MEAs. The analysis results indicate that the nonparametric approach provides more accurate estimates of the observed degradation data than other parametric approaches. Based on the nonparametric degradation model, we suggest a method to predict failure-times under normal operating conditions by estimating the time-scale factor under accelerated operating conditions.
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