摘要
研究了一种用于质子交换膜燃料电池(PEMFC)的自制Pt/C电催化剂(标记为THYT-1)的物理化学和电化学性质.将THYT-1电催化剂与E-TEK公司的同类电催化剂的组成、形态及电催化性能进行了比较.单电池测试结果显示,THYT-1的电催化性能优于E-TEK电催化剂.CV测试结果表明CO在这两种电催化剂上的电氧化性能相近;TEM分析表明两种催化剂上Pt晶粒在炭载体上呈均匀分布,平均粒径均为2～3nm;XPS和XRD测试结果表明两种催化剂中Pt主要以金属态存在.这些数据表明THYT-1催化剂的物理化学性质与E-TEK公司的相类似.
A homemade Pt/C electrocatalyst (named as THYT-1) for proton-exchange membrane fuel cell (PEMFC) was prepared and characterized comprehensively. Single-cell measurements. showed that the performance of THYT-1 for hydrogen electro-oxidation was superior to that of the E-TEK Pt/C catalyst. Cyclic voltammetry measurements in a half PEM fuel cell indicated that the electro-oxidation behavior of adsorbed CO on THYT-1 and the E-TEK Pt/C catalyst was indistinguishable. XPS and XRD detections showed that platinum of the two catalysts exist mainly in the metallic state. Uniformly dispersed Pt-particles with sizes of 2 similar to 3 nm were found to be the dominant images of Pt in the TEM micrographs for both THYT-1 and the E-TEK catalysts. Application of THYT-1 catalyst in the research and development of PEMFC technology can be expected.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2003年第4期342-346,共5页
Acta Physico-Chimica Sinica
基金
国家重点基础研究发展规划(G2000026408)项目
教育部"优秀跨世纪人才"和国家杰出青年基金(20125310)资助课题~~
