The Role of Lone-Pair Electrons in Pt-N Interactions for the Oxygen Reduction Reaction in Polymer Exchange Membrane Fuel Cells

被引：29

作者：

Ham, Kahyun ^{[1
]}

Shin, Dongyoon ^{[2
]}

Lee, Jaeyoung ^{[1
,3
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Earth Sci & Environm Engn, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea

[2] Max Planck Inst Chem Energiekonvers, 34-36 Stiftstr, D-45470 Mulheim, Germany

[3] Gwangju Inst Sci & Technol, Ertl Ctr Electrochem & Catalysis, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea

来源：

CHEMSUSCHEM | 2020年 / 13卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

carbon materials; fuel cells; metal-support interaction; oxygen reduction reaction; platinum; NITROGEN-DOPED CARBON; INNERSHELL ABSORPTION-SPECTROSCOPY; ENHANCED-ELECTROCATALYTIC ACTIVITY; ORR ACTIVE-SITES; PLATINUM NANOPARTICLES; CATALYST; GRAPHENE; NANOTUBES; PERFORMANCE; DURABILITY;

D O I：

10.1002/cssc.201903403

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An N-doped carbon with various N concentrations was prepared by using a scalable ball-milling method. The importance of the lone pair of electrons on the N species for the stability of Pt nanoparticles and their activity toward the oxygen reduction reaction was investigated. X-ray spectroscopic analysis was used to investigate the interaction between Pt and the pyridinic N. The pyridinic N modified the Pt oxidation state and helped achieve size homogeneity and high catalytic activity by facilitating the rate-determining step.

引用

页码：1751 / 1758

页数：8

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