The role of Pt loading on reduced graphene oxide support in the polyol synthesis of catalysts for oxygen reduction reaction

被引：18

作者：

Lagarteira, Tiago ^{[1
]}

Delgado, Sofia ^{[1
]}

Fernandes, Celina ^{[1
]}

Azenha, Catia ^{[1
]}

Mateos-Pedrero, Cecilia ^{[1
]}

Mendes, Adelio ^{[1
]}

机构：

[1] Univ Porto, Lab Proc Engn Environm Biotechnol & Energy LEPABE, Fac Engn, Rua Dr Roberto Frias S-N, P-4200465 Porto, Portugal

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 40期

关键词：

Proton exchange membrane fuel cell; Oxygen reduction reaction; Catalyst durability; Reduced graphene oxide support; FUEL-CELL; PLATINUM NANOPARTICLES; PARTICLE-SIZE; ELECTROCATALYTIC ACTIVITY; CARBON CATALYSTS; NICKEL NANOWIRES; NANOPLATELETS; DURABILITY; ALLOY; PT/C;

D O I：

10.1016/j.ijhydene.2020.02.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Common carbon-blacks have shown insufficient stability as cathodic catalyst supports for proton exchange membrane fuel cells (PEMFCs). In this regard, alternative supports have been proposed and, specifically graphene or reduced graphene oxide (rGO), have attracted special attention. Herein, a set of electrocatalysts using reduced graphene oxide (rGO) as support is synthetized by a modified polyol method. The influence of Pt loading on the support is studied and compared with conventional supports, considering Pt particle morphologies and oxygen reduction reaction (ORR) performance in rotating disk electrode (RDE). Despite Pt average particle size typically increases with the Pt loading, 30 wt% of Pt on rGO is the optimal Pt loading, yielding the highest ORR activity among the rGO-supported electrocatalysts. These results show that both Pt loading and type of support greatly impact on the morphology and electrochemical performance of Pt nanoparticles. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：20594 / 20604

页数：11

共 65 条

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