Synthesis and Characterization of Mn3O4 - Graphene Core - Shell Quantum Dots for Electrochemical Pseudocapacitor Applications

被引：8

作者：

Ko, Yohan ^{[1
]}

Son, Dong Ick ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Inst Adv Composite Mat, Wonju 55324, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2018年 / 72卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Quantum dots; Mn3O4; Graphene; Core-shell type; Electrochemical; Supercapacitor; HYDROTHERMAL SYNTHESIS; SUPERCAPACITOR; OXIDE; FACILE; NANOCRYSTALS; PERFORMANCE; ELECTRODES;

D O I：

10.3938/jkps.72.1198

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the in-situ chemical growth of unique core-shell quantum dots (QDs) with single layer graphene on the surfaces of the Mn3O4 QDs and on their structural, optical and electrical properties. The Mn3O4-graphene QDs were synthesized through a simple hydrothermal technique. In order to enhance performance for electrochemical energy storage, we developed core (active material) - shell (conductive material)-type Mn3O4 - graphene QDs as electrode materials by using an aqueous electrolyte (6M KOH). As a result, the performance of electrochemical energy storage exhibit a specific capacitance of 452.72 Fg(-1) at a current density of 1 Ag-1.

引用

页码：1198 / 1202

页数：5

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