【摘要】 提高电催化剂的利用率以降低质子交换膜燃料电池(PEMFC)的成本,是加速其商业化的一个重要途径.文中讨论了现有的CV法在研究PEMFC电催化剂利用率时存在的一些问题,如CV法扫描速度的影响及Pt理论比表面积难于准确确定等.为了较好地解决这一问题,提出了一种以单位质量电催化剂产生电池功率或电能来表示膜电极中电催化剂利用率的方法.更多还原

【Abstract】 Reducing the cost of proton exchange membrane fuel cell (PEMFC) by increasing the utilization ratio of electro-catalyst is one of the important approaches to the acceleration of its business processes. Some problems, such as the influence of cyclic voltammeter scanning rate cyclic voltammeter, the difficulty in defining Pt theoretieal specific surface area, etc, in the research of the utilization ratio of PEMFC electro-catalyst, are discussed by using the existing CV method. In order to solve the problems, the utilization ratio of electro-catalyst in membrane electrode assembly (MEA) expressed by cell power or electric power produced by per unit mass (electro-)catalyst, is brought forward.更多还原