期刊
ELECTROCHIMICA ACTA
卷 299, 期 -, 页码 809-819出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.01.064
关键词
Proton exchange membrane fuel cell; Membrane electrode assembly design; Graphene-based microporous layers; Short-side-chain (SSC) ionomers and membranes
资金
- Ontario-China Research and Innovation Fund (OCRIF Round 3)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Automotive Partnership Canada (APC) through the Natural Sciences and Engineering Research Council of Canada (NSERC) [APCPJ 417858-11]
Conventional membrane-electrode assembly (MEA), a key component in proton exchange membrane fuel cells, only operates reasonably within a narrow range of operating conditions. In this study, a scaled up MEA that can perform adequately under a wide range of humidification and flow conditions is developed. It consists of a microporous layer (MPL) composed of graphene for the cathode electrode, catalyst layers (CLs) prepared with a short-side-chain (SSC) ionomer, and a SSC electrolyte membrane. The results show that the graphene-based MPL employed on the cathode provides an excellent platform for the CL (hence promotes catalyst activity and catalyst utilization) and improves water retention, due to its unique microstructure and morphology. The proposed MEA provides stable and highly promising performance independent of flow conditions under the relative humidities (RHs) of 70% and 100%. Interestingly, the MEA also demonstrates relatively better cell performance under low-humidity conditions (40% RH), such that it performs noticeably better, as the reactants are supplied to the cell under low-flow condition, rather than moderate-and high-flow conditions. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据