Surfactant-assisted hydrothermal synthesis of flower-like tin oxide/graphene composites for high-performance supercapacitors

被引：36

作者：

Haldorai, Yuvaraj ^{[1
]}

Huh, Yun Suk ^{[2
]}

Han, Young-Kyu ^{[1
]}

机构：

[1] Dongguk Univ Seoul, Dept Energy & Mat Engn, Seoul 100715, South Korea

[2] Inha Univ, Dept Biol Engn, BSRC, Inchon 402751, South Korea

来源：

NEW JOURNAL OF CHEMISTRY | 2015年 / 39卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

GRAPHENE; ELECTRODES; OXIDE; GAS; NANOCOMPOSITES; CAPACITORS; FILMS; MNO2;

D O I：

10.1039/c5nj01442e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a simple, one-pot hydrothermal method for synthesizing tin oxide (SnO2) nanoparticle-decorated reduced graphene oxide (RGO) nanocomposites. Transmission electron microscopy images show that flower-like SnO2 architectures are homogeneously dispersed onto the RGO surface. The composite exhibits a maximum specific capacitance of 396 F g(-1) (at a current density of 4.5 A g(-1)), with a capacitance retention of 92.6% even after 10 000 continuous charge/discharge cycles, which is sevenfold higher than that of pure RGO (55 F g(-1)). The high capacitance is attributed to the synergetic effect of SnO2 and RGO. In addition, the composite shows efficient photodegradation of methylene blue under visible light. The enhanced degradation is ascribed to good adsorption and improved separation efficiency of photo-induced electron-hole pairs.

引用

页码：8505 / 8512

页数：8

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