In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells(PEMFCs)

查看全文 作　　者：Sheng [1]Sui;Xiaolong [1]Zhuo;Kaihua [1]Su;Xianyong [1]Yao;Junliang [1]Zhang;Shangfeng [2]Du;Kevin [2]Kendall

机构地区：[1]Institute of Fuel Cell,Shanghai Jiao Tong University;[2]School of Chemical Engineering,University of Birmingham,Edgbaston,Birmingham B15 2TT,United Kingdom

出　　处：《Journal of Energy Chemistry》索引2013年第22卷第3期,共7页

基　　金：supported by the Royal Academy of Engineering,United Kingdom 摘　　要：An extensive study has been conducted on the proton exchange membrane fuel cells(PEMFCs) with reducing Pt loading.This is commonly achieved by developing methods to increase the utilization of the platinum in the catalyst layer of the electrodes.In this paper,a novel process of the catalyst layers was introduced and investigated.A mixture of carbon powder and Nafion solution was sprayed on the glassy carbon electrode(GCE) to form a thin carbon layer.Then Pt particles were deposited on the surface by reducing hexachloroplatinic(Ⅳ) acid hexahydrate with methanoic acid.SEM images showed a continuous Pt gradient profile among the thickness direction of the catalytic layer by the novel method.The Pt nanowires grown are in the size of 3 nm(diameter) x 10 nm(length) by high solution TEM image.The novel catalyst layer was characterized by cyclic voltammetry(CV) and scanning electron microscope(SEM) as compared with commercial Pt/C black and Pt catalyst layer obtained from sputtering.The results showed that the platinum nanoparticles deposited on the carbon powder were highly utilized as they directly faced the gas diffusion layer and offered easy access to reactants(oxygen or hydrogen). 关键词：质子交换膜燃料电池催化剂层原位生长碳粉末纳米级扫描电子显微镜铂 NAFION

相关文献

参考文献（10）
引证文献（2）
耦合文献（0）

参考文献(10)

引证文献(2)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells(PEMFCs)

参考文献(10)

引证文献(2)

用户提示