Using polyacrylonitrile carbon fibers and polyvinyl alcohol as raw materials,samples of carbon paper for proton exchange membrane fuel cells (PEMFC) graphitized at different temperatures were prepared by wet papermaking,impregnated with phenolic resin and cured by hot-pressed,carbonized and graphitized.The tensile strength,permeability,horizontal resistivity and other indicators of carbon paper were comprehensively analyzed,and the graphite structure of carbon paper samples at different graphitization temperatures was analyzed by X-ray power diffraction (XRD),so as to explore the influence of graphitization temperature on the performance of carbon paper.The optimum graphitization temperature of carbon paper with better performance and lower cost was obtained.The results showed that the carbon paper prepared at 2400℃ had the best comprehensive performance during 2000～2800℃,and could save power energy compared with the graphitization at 2800℃.When the graphitization temperature was 2400℃,the tensile strength,horizontal resistivity and graphitization degree of carbon paper were 22.9MPa,3.935mΩ·cm and 68.68%,respectively.
Yuan Xiaojun, Wang Hong, Liu Jiangtao, Li Rongnian, Feng Yong, Sun Qizhong, Tian Hexin, Lin Xian
. Effect of graphitization temperature on the properties of carbon paper for proton exchange membrane fuel cells[J]. New Chemical Materials, 2024
, 52(6)
: 94
-97
.
DOI: 10.19817/j.cnki.issn1006-3536.2024.06.011
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