Synthesis of hierarchical interconnected graphene oxide for enhanced oxygen reduction

Liu，Ze1; Liu，Hongdong2; Du，Hongfang3; Zhao，Zhi Liang4,5; Yuan，Weiyong5; Zhang，Lian Ying5,6

2020

10.1016/j.colsurfa.2020.125719

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS   影响因子和分区

0927-7757

1873-4359

Carbon materials are the commonly used catalyst supports for energy conversion and storage systems thanks to their high electronic conductivity and large specific surface area. Herein, hierarchical interconnected graphene oxide is synthesized using a facile thermally-induced expansion reduction approach, exhibiting a mainly direct pathway of four-electron transfer process toward oxygen reduction reaction. Compared to normal graphene oxide sheets, the hierarchical graphene oxide shows 38 mV more positive half-wave potential. It also shows remarkable methanol tolerance ability and better electrochemical stability than the commercial Pt/C. Its catalytic enhancement mechanism could be attributed to the architecture of interconnected hierarchical structure, which could offer appropriate distances for the bridge mode of oxygen adsorption. This work offers scientific insights on tailored graphene oxide nanostructures as an advanced electrocatalyst for fuel cells and beyond.

Bridge adsorption Electrocatalyst Hierarchical graphene oxide Metal free Oxygen reduction

SCI ; EI

英语

其他

20204409416686

Electrolytic reduction ; Electron transport properties ; Oxygen ; Fuel cells ; Gas adsorption ; Graphene

Ore Treatment:533.1 ; Fuel Cells:702.2 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

CHEMISTRY

2-s2.0-85093917852

Scopus

1.Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai,201800,China
2.Research Institute for New Materials Technology,Chongqing University of Arts and Sciences,Chongqing,402160,China
3.Frontiers Science Center for Flexible Electronics,Shaanxi Institute of Flexible Electronics & Shaanxi Institute of Biomedical Materials and Engineering,Northwestern Polytechnical University,Xi'an,710072,China
4.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies,Institute for Clean Energy & Advanced Materials,Southwest University,Chongqing,400715,China
6.Institute of Materials for Energy and Environment,College of Materials Science and Engineering,Qingdao University,Qingdao,266071,China

Liu，Ze,Liu，Hongdong,Du，Hongfang,et al. Synthesis of hierarchical interconnected graphene oxide for enhanced oxygen reduction[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2020,610.

Liu，Ze,Liu，Hongdong,Du，Hongfang,Zhao，Zhi Liang,Yuan，Weiyong,&Zhang，Lian Ying.(2020).Synthesis of hierarchical interconnected graphene oxide for enhanced oxygen reduction.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,610.

Liu，Ze,et al."Synthesis of hierarchical interconnected graphene oxide for enhanced oxygen reduction".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 610(2020).