摘要
Porous Pt thin films were prepared on carbon papers by a single-step ultra-high dc magnetron sputtering method to obtain ideal electrodes for proton exchange membrane fuel cells.The platinum loading of the electrocatalyst layer is controlled at about 0.1 mg·cm^(-2).Structural characteristics and catalytic activities of the films were analyzed by scanning electron microscopy,atomic force microscopy,X-ray diffraction,cyclic voltammetry,and stress durability testing methods.The effect of treatment conditions of a substrate on the structural and performance characteristics of the catalytic films was shown as well.Films produced on acid-treated carbon papers at the argon pressure of 0.01 mbar possessed a homogeneous,highly developed surface along with a porous structure.Compared to Pt/TCPW(Toray carbon papers soaked in ultrapure water)electrodes,the film obtained on the acid-treated substrate had a larger electrochemical surface area(163.33 m^(2)·g^(-1))and exhibited better catalytic stability and durability due to a porous structure as a result of Pt particle accumulation.
作者
刘广权
PENG Liping
FAN Long
WANG Jin
FU Yajun
XIONG Zhengwei
REN Xuetan
曹林洪
吴卫东
LIU Guangquan;PENG Liping;FAN Long;WANG Jin;FU Yajun;XIONG Zhengwei;REN Xuetan;CAO Linhong;WU Weidong(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;Science and Technology on Plasma Physics Laboratory,Research Center of Laser,Fusion,China Academy of Engineering Physics,Mianyang 621900,China;Collaborative Innovation Center of IFSA(CICIFSA),Shanghai Jiao Tong University Shanghai 200240,China)
基金
Funded by the Doctoral Fund of Southwest University of Science and Technology(Nos.19zx7131 and 18zx7132)
the Applied Fundamental Research Projects of Science and Technology Department of Sichuan Province(No.2020YJ0333)
the Science and Technology on Plasma Physics Laboratory:6142A04180405
Science and Technology on Plasma Physics Laboratory:ZY2018-07。
