Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第20卷    第7期    总第136期    2010年7月

[PDF全文下载]    [Flash在线阅读]    

    

文章编号:1004-0609(2010)07-1390-06
质子交换膜燃料电池用炭纤维纸的制备和表征
谢志勇,张  敏,金谷英,苏哲安,张明瑜,陈建勋,黄启忠

(中南大学 粉末冶金国家重点实验室,长沙  410083)

摘 要: 采用干法成型技术制备聚丙烯腈(PAN)基炭纤维纸坯体,将其经树脂浸渍、热压、炭化、石墨化处理后制备成轻量化炭纤维纸。利用扫描电子显微镜(SEM)观察炭纤维纸及坯体的显微结构,利用X射线衍射仪测试不同温度处理后的石墨化度,并利用四探针法测试炭纤维纸的导电性能,透气性采用压差法进行测试。结果表明:石墨化温度是影响炭纤维纸电阻率的关键因素,而密度对电阻率的影响较小;透气性随厚度和体积密度的增加而降低;制备的炭纤维纸厚度为0.11 mm、密度为0.65 g/cm3,将其经2 000 ℃石墨化处理后,采用Pt载量0.5 mg/cm2的Core112CCM为膜电极,在H2与空气的流量比为1.2׃5、温度60 ℃、常压条件下进行单体电池性能测试,电流密度为500 mA/cm2时输出电压为0.6 V,电池输出性能较好。

 

关键词: 炭纤维纸;燃料电池;透气性;电阻率

Preparation and characterization of carbon fiber paper for
application of proton exchange membrane fuel cell
XIE Zhi-yong, ZHANG Min, JIN Gu-ying, SU Zhe-an, ZHANG Ming-yu, CHEN Jian-xun, HUANG Qi-zhong

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract:The carbon fiber paper (CFP) was prepared from polyacrylonitrile (PAN) based carbon fiber through impregnation with resin, mould pressing, carbonization and graphitization. The microstructures of CFP perform and resultant CFP were analyzed by SEM. The degree of graphitization of CFPs heat treated at different temperatures was investigated by XRD. The gas permeability and electrical property were measured by differential pressure method and four-probe technique, respectively. The results indicate that the graphitization temperature has larger impact than bulk density on the electrical resistivity of CFP. The gas permeability decreases with the increase of thickness and bulk density of CFP. A suitable CFP with thickness of 0.11 mm, and bulk density of 0.65 g/cm3 is developed. When using Core112CCM with 0.5 mg/cm2 Pt as membrane electrode, the optimum properties of the CFP are achieved by restricting the heat treatment temperature to only 2 000 ℃ under the conditions of gas flow rate ratio of H2 to air 1.2׃5, atmospheric pressure 60 ℃, output voltage 0.6 V and current density 500 mA/cm2.

 

Key words: carbon fiber paper; fuel cell; gas permeability; electrical resistivity

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com