质子交换膜燃料电池
材料科学
欧姆接触
铂金
膜
电极
电化学
催化作用
化学工程
电压
分析化学(期刊)
图层(电子)
复合材料
化学
色谱法
电气工程
有机化学
生物化学
工程类
物理化学
作者
Ruiliang Liu,Wei Zhou,Liyang Wan,Pengyang Zhang,Shuangli Li,Yu Gao,Dongsheng Xu,Congcong Zheng,Mingfeng Shang
标识
DOI:10.1016/j.cap.2019.09.016
摘要
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 m2/gpt 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 μL 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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