Molecular-Scale Heteroassembly of Redoxable Hydroxide Nanosheets and Conductive Graphene into Superlattice Composites for High-Performance Supercapacitors

被引：171

作者：

Ma, Renzhi ^{[1
]}

Liu, Xiaohe ^{[1
]}

Liang, Jianbo ^{[1
]}

Bando, Yoshio ^{[1
]}

Sasaki, Takayoshi ^{[1
]}

机构：

[1] NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 24期

基金：

日本科学技术振兴机构;

关键词：

layered double hydroxides; graphene; superlattices; composites; supercapacitors; LAYERED DOUBLE HYDROXIDES; CHARGE STORAGE MECHANISM; ELECTROCHEMICAL CAPACITORS; ELECTRODE MATERIALS; CARBON NANOTUBES; ANION-EXCHANGE; OXIDE; ENERGY; FILMS; DELAMINATION;

D O I：

10.1002/adma.201400054

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Artificial superlattice nanocomposites are successfully prepared by electrostatic heteroassembly of redoxable Co-Al or Co-Ni layered double hydroxide (LDH) nanosheets with graphene. The superlattice electrodes exhibit a high capacity up to ca. 650 F/g, which is approximately 6 times that of pure graphene. The composites are found to be capable of superfast charging and discharging, up to ca. 100 Hz, comparable with the high-power performance of graphene electrodes. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：4173 / 4178

页数：6

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