journal article·2023-01-11

Micromodification of the Catalyst Layer by CO to Increase Pt Utilization for Proton-Exchange Membrane Fuel Cells

Zengyin Wen, Duojie Wu, Dustin Banham, Ming Chen, Fengman Sun, Zhiliang Zhao, Yiqi Jin, Li Fan, Shaoyi Xu, Meng Gu, Jiantao Fan, Hui Li

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Abstract

Improving the utilization of platinum in proton-exchange membrane (PEM) fuel cells is critical to reducing their cost. In the past decade, numerous Pt-based oxygen reduction reaction catalysts with high specific and mass activities have been developed. However, the high activities are mostly achieved in rotating disk electrode (RDE) measurement and have rarely been accomplished at the membrane electrode assembly (MEA) level. The failure of these direct translations from RDE to MEA has been well documented with several key reasons having been previously identified. One of them is the resistance caused by complex mass transport pathways in the MEA. Herein, we improve the proton and oxygen transportations in the MEA by building a thin and uniform distribution of ionomer on the catalyst surface. As a result, a PEM fuel cell design is capable of showing a current density improvement of 38% at the same voltage (0.6 V) under the H2/air operation.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen518055, China

School of Materials Science and Hydrogen Energy, Foshan University, Foshan528000, China

Guangdong Key Laboratory for Hydrogen Energy Technologies, Foshan528000, China

Guangdong TaiJi Power, No. 25 Xingliang Road, Hecheng Street, Foshan528000, China

Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen518055, China

Harbin Institute of Technology, Harbin150001, China

Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen518055, Guangdong, China

Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen518055, China

Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development, Southern University of Science and Technology, Shenzhen518055, China

Shenzhen Key Laboratory of Hydrogen Energy, Southern University of Science and Technology, Shenzhen518055, China

Funding

Ministry of Science and Technology of the People's Republic of China · Shenzhen Fundamental Research Program · Natural Science Foundation of Shenzhen City · Special projects on sustainable development science and technology

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