期刊
CHINESE JOURNAL OF CHEMICAL ENGINEERING
卷 32, 期 -, 页码 360-367出版社
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/j.cjche.2020.07.038
关键词
Passive DMFC; Perforated current collector; Wire mesh current collector; Methanol concentration; Fuel cell performance
资金
- Department of Science and Technology-Science and Enginering Research Board (DST-SERB), Government of India
- Technical Education Quality Improvement-II-Centre of Excellence (TEQIP-II-CoE), National Institute of Technology Warangal, India
This study investigates the combined impact of perforated and wire mesh current collectors on the performance of passive direct methanol fuel cells, finding that specific combinations of current collectors with certain open ratios can improve peak power density under certain conditions. Additionally, the stability of combined current collectors is emphasized.
Passive Direct methanol fuel cells (DMFC) are more suitable for charging small capacity electronic devices. In passive DMFC, the fuel and oxidant are supplied by diffusion and natural convection process on the anode and cathode sides respectively. Current collectors (CC) play a vital importance in fuel cell performance. This paper presents the combined impact of perforated and wire mesh current collectors (WMCC) on passive DMFC performance. Three types of open ratios of perforated current collectors (PCC), such as 45.40%, 55.40% and 63.40% and two types of wire mesh current collectors with open ratios of 38.70% and 45.40% were chosen for the experimental work. A combination of Taguchi-L9 rule is considered. A combination of three PCC and two WMCC on both anode and cathode was used. Methanol concentration was varied from 1 mol.L-1-5 mol.L-1 for nine combinations of PCC and WMCC. From the experimental results, it is noticed that the combination of PCC and WMCC with an open ratio of 55.40% and 38.70% incorporated passive DMFC produced peak power density at 5 mol.L-1 of methanol concentration. The passive DMFC performance was evaluated in terms of maximum power density and maximum current density. The combined current collectors of PCC and WMCC open ratios of 55.40% + 38.70% have more stable voltage than single PCC of open ratio 63.40% at 4 mol.L-1 of methanol concentration. (C) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
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