催化作用
甲醇
原电池
多孔性
材料科学
化学工程
纳米结构
甲醇燃料
吸附
燃料电池
电催化剂
纳米技术
电化学
化学
冶金
复合材料
物理化学
有机化学
电极
工程类
作者
Haochen Sun,Peng Rao,Peilin Deng,Jing Li,Qi Chen,Yijun Shen,Xinlong Tian
标识
DOI:10.1016/j.ijhydene.2022.08.155
摘要
Exploring affordable, durable, and effective electrocatalysts for methanol oxidation reaction (MOR) is of great importance to the industrial application of direct methanol fuel cells. Herein, a three-dimensional (3D) porous PtCu catalyst is synthesized by a facile and effective galvanic replacement method, which exhibits high activity and durability for MOR. The modulated electronic and strain effects of the Pt atoms are verified by extensive characterizations, and the mass and specific activities of the prepared catalyst are roughly 3.8 and 9.9 times higher than those of the commercial Pt/C catalysts, respectively. The robust activity of the prepared catalyst is probably owing to the optimized affination between Pt and the adsorbed poisoning species (mainly CO) induced by the electronic and strain effects of the Pt, as well as the unique 3D porous nanostructure.
科研通智能强力驱动
Strongly Powered by AbleSci AI