燃料化学学报（中英文）2022，Vol.50Issue(10)：1270-1277,8.DOI:10.1016/S1872-5813(22)60040-9
碳布负载的高分散CoPx纳米粒子及其甲醇电催化氧化反应性能的研究
Highly dispersed CoPx nanoparticles supported on carbon cloth for the enhanced catalytic performance of methanol electro-oxidation
摘要
Abstract
Direct methanol fuel cell (DMFC) is a potential commercial fuel cell technology that is presently hindered by the expensive noble metal materials of the anode. Developing a method to obtain a uniformly dispersed metal phosphide catalyst with narrow size distribution is still a challenge. In this work, cobalt oxide was deposited on carbon cloth (CC) through atomic layer deposition (ALD), then cobalt phosphide was obtained after the phosphorization process. By changing the number of ALD-based ozone pulses (ALD-O3) for CC, the nucleation and growth modes of cobalt oxide (ALD-CoOx) on the CC were regulated, and CoPx nanoparticles with small particle size and uniform distribution were obtained. The optimized CoPx-based catalyst with 40 cycles of ALD-O3 treatment (CoPx/40-CC) exhibits excellent activity (153 mA/cm2) toward methanol electrocatalytic oxidation reaction in the alkaline solution, which is higher than the catalyst prepared by impregnation (Imp-CoPx/CC), although the CoPx loading of CoPx/40-CC is lower than that of Imp-CoPx/CC. The results indicate that the enhanced activity benefits from the small particle size and the uniform CoPx distribution, which promote the electron-transfer and mass transport kinetics of the methanol electro-oxidation process.关键词
原子层沉积/磷化钴纳米粒子/甲醇电催化氧化Key words
atomic layer deposition/cobalt phosphide nanoparticles/methanol electrocatalytic oxidation reaction分类
化学化工引用本文复制引用
张见远,邢双凤,赵世超,熊咪,张变琴,童希立,覃勇,高哲..碳布负载的高分散CoPx纳米粒子及其甲醇电催化氧化反应性能的研究[J].燃料化学学报（中英文）,2022,50(10):1270-1277,8.基金项目
The project was supported by the National Key R&D Program of China(2020YFA0210902 and 2017YFA0700101),National Natural Science Foundation of China(U1932131 and U1832208),National Science Fund for Distinguished Young Scholars(21825204),and Youth Innovation Promotion Association of the Chinese Academy of Sciences(2018208). （2020YFA0210902 and 2017YFA0700101）
