Graphene supported heterogeneous catalysts for Li-O2 batteries

被引：29

作者：

Alaf, M. ^{[1
]}

Tocoglu, U. ^{[2
]}

Kartal, M. ^{[2
]}

Akbulut, H. ^{[2
]}

机构：

[1] Bilecik Seyh Edebali Univ, Dept Met & Mat Engn, Gulumbe Campus, TR-11210 Bilecik, Turkey

[2] Sakarya Univ, Fac Engn, Dept Met & Mat Engn, Esentepe Campus, TR-54187 Sakarya, Turkey

来源：

APPLIED SURFACE SCIENCE | 2016年 / 380卷

关键词：

Graphene; Manganese dioxide; Platinum nanoparticles; Free-standing; Li-air batteries; ANODE MATERIALS; CATHODE CATALYSTS; FACILE SYNTHESIS; LITHIUM; COMPOSITE; ELECTRODES; NANOPARTICLES; REDUCTION; NANOTUBE;

D O I：

10.1016/j.apsusc.2016.01.207

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：

In this study production and characterization of free-standing and flexible (i) graphene, (ii) alpha-MnO2/graphene, (iii) Pt/graphene (iv) alpha-MnO2/Pt/graphene composite cathodes for Li-air batteries were reported. Graphene supported heterogeneous catalysts were produced by a facile method. In order to prevent aggregation of graphene sheets and increase not only interlayer distance but also surface area, a trace amount multi-wall carbon nano tube (MWCNT) was introduced to the composite structure. The obtained composite catalysts were characterized by SEM, X-ray diffraction, N-2 adsorption-desorption analyze and Raman spectroscopy. The electrochemical characterization tests including galvanostatic charge/discharge and electrochemical impedance spectroscopy (EIS) measurement of catalyst were carried out by using an ECC-Air test cell. These highly active graphene supported heterogeneous composite catalysts provide competitive properties relative to other catalyst materials for Li-air batteries. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：185 / 192

页数：8

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