A TiC@TiO2-C Support for Pt Catalysts to Boost the Oxygen Reduction Reaction

被引：5

作者：

Zheng, Cheng ^{[1
,2
]}

Sun, Xueqin ^{[1
,2
]}

Qin, Yanxi ^{[1
,2
]}

Li, Junfeng ^{[1
]}

Jin, Guoqiang ^{[1
]}

Tong, Xili ^{[1
]}

Yang, Nianjun ^{[3
,4
]}

机构：

[1] Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Hasselt Univ, Dept Chem, Agoralaan 1, B-3590 Diepenbeek, Belgium

[4] Hasselt Univ, IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium

来源：

ADVANCED SUSTAINABLE SYSTEMS | 2024年 / 8卷 / 05期

关键词：

core-shell structure; electron transfer; oxygen reduction reaction; Pt; DURABILITY; CATHODE; ELECTROCATALYSTS; PERFORMANCE; MECHANISMS; ULTRAFINE; ENHANCE; PEMFC;

D O I：

10.1002/adsu.202300556

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The design of advanced supports to boost the oxygen reduction reaction (ORR) in acidic media is of great significance for proton exchange membrane fuel cells. Herein, TiC@TiO2-C supports are prepared by the sol-gel method coupled with high-temperature annealing. The obtained Pt/TiC@TiO2-C catalyst exhibits outstanding ORR activity such as the half-wave potential of 0.84 V-RHE as well as strong electrochemical stability in 0.1 m HClO4 electrolyte, surpassing the Pt/TiO2-C and Pt/C catalyst. This result is attributed to the electron transfer from the support to Pt nanoparticles accelerated by the TiC core, which optimizes the electronic structure of Pt to boost the ORR.

引用

页数：7

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