期刊
CURRENT APPLIED PHYSICS
卷 20, 期 1, 页码 11-17出版社
ELSEVIER
DOI: 10.1016/j.cap.2019.09.016
关键词
Fuel cell; Membrane electrode; Electrostatic spraying; Platinum-carbon catalytic; Polarization curve
资金
- Natural Science Foundation of China [51922092]
- Natural Science Foundation of Fujian Province of China [2017J06015]
- Fundamental Research Funds for Central Universities, Xiamen University [20720190031, 20720190129]
In order to improve the performance of proton exchange membrane fuel cell (PEMFC), the optimization of electrostatic spraying of membrane electrode was conducted. The influence of the spraying voltage on morphology, elemental composition of catalyst layer, and performance of the PEMFC were investigated. The results show that increasing spraying voltage could reduce agglomeration of the carbon-supported platinum particles, leading to more uniform pore distribution. High voltage did not accelerate oxidation of platinum catalyst. A high electrochemical active surface area of 26.18 m(2)/g(pt) was obtained when the platinum-carbon catalyst layer was deposited in cone jet mode. With further increasing spraying voltage, the total ohmic resistance and catalytic activity were changed slightly, whereas the charge transfer resistance was increased. Using the optimized electrostatic spraying parameters (injection rate = 100 mu L min(-1), spraying voltage = 8.5 kV, and working distance = 12 mm), a peak power density of 1.408 W cm(-2) was obtained with an output voltage of 0.451 V.
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