期刊
ELECTROCHIMICA ACTA
卷 253, 期 -, 页码 142-150出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.08.160
关键词
Proton exchange membrane fuel cell; Catalyst layer; Microporous layer; Nitrogen-doped; Carbon nanotubes
资金
- State's Key Project of Research and Development Plan of China [2016YFB0101201]
- National Natural Science Foundation of China (NSFC) [21276098, 21476088, 21776105, U1301245]
- Natural Science Foundation of Guangdong Province [2014A010105041, 2015A030312007]
- Guangdong Provincial Department of Science and Technology [2015B010106012]
- Educational Commission of Guangdong Province [2013CXZDA003]
The performance of the proton exchange membrane fuel cell (PEMFC) is significantly improved through introducing nitrogen-doped carbon nanotubes (NCNTs) into the catalyst layer (CL) and microporous layer (MPL) of the membrane electrode assembly (MEA), it reveals by SEM images that the NCNTs are uniformly dispersed in CL and MPL, resulting in the more plenty of porosity, higher surface area, better conductivity, and better prevention of the layer cracks. The BET surface area and pore volume of MPL are increased by 88% and 77% respectively with the addition of 20 wt% of NCNTs in MPL. The membrane electrode assembly (MEA) with adding 20 wt% NCNTs both in cathode CL and in cathode GDL can yield the best cell performance. At a cell temperature of 70 degrees C and 30 psi back pressures, the current density is up to 1000 mA cm(-2) at 0.7 V and 1600 mA cm(-2) at 0.6 V, and the max power density reaches 997 mW cm(-2). (C) 2017 Elsevier Ltd. All rights reserved.
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