摘要
Pt/C催化剂稳定性是制约质子交换膜燃料电池商业化的关键技术挑战之一,因此增强燃料电池催化剂稳定性研究一直是该领域的热点。指出Pt纳米粒子的溶解再沉积、团聚长大,中间物种在Pt表面的吸附钝化,有害杂质中毒及碳载体腐蚀是Pt/C催化剂稳定性衰减的主要因素,概述了近些年提高质子交换膜燃料电池催化剂稳定性的研究进展。指出Pt合金化、采用更稳定载体及进一步加强金属载体间相互作用是增强催化剂稳定性的发展方向。
The stability of PUC catalysts is one of the key challenges for the commercialization of proton exchange memhrane fuel cells （PEMFC） , thus enhancing the stability has always been a hot issue in this field. In this paper, degradation mechanism of PVC catalysts is analyzed. It concludes that dissolution.＇ aggregation of Pt nanoparticles （NPs）, strong absorption of intermediate species on the surface of Pt NPs, Pt poisoning by impure species and carbon support corrosion are principally responsible for the degradation of PtlC catalysts. The recent development of enhancing the catalyst stability from two aspects, supported metals and supports, was reviewed. The future prospects of the PEMFC catalyst stability were to form Pt＇s alloys with other metals, choose more stable supports or enhance the interaction between Pt and supports.
出处
《化学通报》
CAS
CSCD
北大核心
2014年第1期3-11,共9页
Chemistry
基金
国家自然科学基金项目(20936008
20806096
21176327
21276291)
中央高校科研业务费重大研究项目(CDJZR12228802)资助
关键词
质子交换膜燃料电池
电化学催化
催化剂
铂
碳
Proton exchange membrane fuel cells （PEMFC） , Electrocatalysis , Catalysts, Pt , Carbon
