唐亞文教授課題組在ELECTROCHEMISTRY COMMUNICATIONS發(fā)表研究論文
Evolution of composition and structure of PtRh/C in the acidic methanol electrooxidation process
Shi, ZP (Shi, Zhaoping)[ 1 ] ; Li, X (Li, Xin)[ 1 ] ; Li, TF (Li, Tongfei)[ 1 ] ; Chen, YF (Chen, Yifan)[ 1 ]*; Tang, YW (Tang, Yawen)[ 1 ]*（唐亞文）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China
ELECTROCHEMISTRY COMMUNICATIONS，202004,113
PtRh alloys are highly active in the anodic methanol oxidation reaction (MOR) but few studies have looked at their evolution in the composition and structure during the catalytic process. Herein, a uniformly dispersed carbon-supported PtRh (PtRh/C) catalyst with Rh-enriched surface was synthesized via a facial hydrothermal method. By recording the performance of different cyclic voltammetry (CV) cycles during electrocatalytic MOR process in acid, the evolution of PtRh/C in composition and structure was elucidated. During the first 80 CV cycles, the rapid dissolution of the surface Rh atoms and the exposure of active Pt sites lead to the dramatic enhancement of the current density. When further continue the CV cycling, Pt atoms on the surface have aggregated and recombined to form a tightly aligned Pt-enriched surface. But Rh tends to be stable and catalytic performance reaches a relatively stable status with slightly decreased activity. Compared with the performance of PtRu/C catalyst, it can be concluded that PtRh/C has better stability and higher activity based on the less soluble property of Rh than Ru.
文章鏈接：
https://www.sciencedirect.com/science/article/pii/S1388248120300412?via%3Dihub
版權(quán)與免責(zé)聲明：本網(wǎng)頁的內(nèi)容由收集互聯(lián)網(wǎng)上公開發(fā)布的信息整理獲得。目的在于傳遞信息及分享，并不意味著贊同其觀點或證實其真實性，也不構(gòu)成其他建議。僅提供交流平臺，不為其版權(quán)負(fù)責(zé)。如涉及侵權(quán)，請聯(lián)系我們及時修改或刪除。郵箱：sales@allpeptide.com