Engineering phase and surface composition of supported PtM alloy electrocatalysts

Abstract

质子交换膜燃料电池(PEMFC)具有能量转化效率高、环境友好、以及轻巧便捷等优点,被认为是未来交通工具和电子产品等最主要的供能电源之一。目前制约PEMFC发展的瓶颈问题主要有阳极重整氢中CO的毒化问题以及阴极非贵金属溶解带来的氧还原活性和稳定性较差的问题。本文致力于总结能够实际应用于PEMFC的负载型Pt基合金催化剂(PtM)的构效规律,为设计制备高性能PtM催化剂提供理论指导。本文的研究内容及结果如下: (1)吸附物诱导法调控制备不同相和表面组成的Pt3Co/PC模型催化剂。 以超高比表面积的多孔碳PC作为强限域效应的载体,在不同的气氛(空气、Ar和H2/N2)条件下退火处理,成功制备了...Proton exchange membrane fuel cell (PEMFC) have many advantages such as high energy efficiency, environmental friendliness and convenient. It is considered as the uppermost power supply for transportation vehicles and electronic products in the future. At present, The problem of CO poisoning in reforming hydrogen at the anode and the sluggish kinetics and the poor durability of the ORR at the cath...学位:理学硕士院系专业:化学化工学院_物理化学学号:2052014115162

    Similar works