Processes of depositing platinum on carbon nanotubes and their effect on performance of proton exchange membrane fuel cell

Yanhui Li, Jun Ding, Junfeng Chen, Zongqiang Mao, Cailu Xu, and Dehai WuDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaInstitute of Nuclear Energy Technology, Tsinghua University, Beijing 100084, China

摘 要：<正> The ultrafine platinum nanoparticles deposited on the surfaces of carbon nanotubes (Pt/CNTs) were prepared by a chemical precipitation method and used as the catalyst of proton exchange membrane fuel cell. The depositing process parameters such as the solution pH value, Pt content and treatment temperature were analyzed. The experimental results show that the optimum process parameters to prepare Pt/CNTs are the solution pH value of 7.0, the theoretical Pt content of 25% (mass fraction) and the heating temperature of 500℃, under the conditions the best performance of the proton exchange membrane fuel cell can be obtained and its voltage can reach 580 mV at a current density of 500 mA/cm2.

关键词：