Hierarchical Configuration of NiCo₂S₄ Nanotube@Ni-Mn Layered Double Hydroxide Arrays/Three-Dimensional Graphene Sponge as Electrode Materials for High-Capacitance Supercapacitors

Houzhao Wan; Jia Liu; Yunjun Ruan; Lin Lv; Lu Peng; Xiao Ji; Ling Miao; Jianjun Jiang

doi:10.1021/acsami.5b03042

Hierarchical Configuration of NiCo₂S₄ Nanotube@Ni-Mn Layered Double Hydroxide Arrays/Three-Dimensional Graphene Sponge as Electrode Materials for High-Capacitance Supercapacitors

ACS Appl Mater Interfaces. 2015 Jul 29;7(29):15840-7. doi: 10.1021/acsami.5b03042. Epub 2015 Jul 16.

Authors

Houzhao Wan^{1

2}, Jia Liu¹, Yunjun Ruan¹, Lin Lv¹, Lu Peng¹, Xiao Ji¹, Ling Miao¹, Jianjun Jiang¹

Affiliations

¹ †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
² ‡Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan 430062, China.

PMID: 26125678
DOI: 10.1021/acsami.5b03042

Abstract

Three dimensional (3D) hierarchical network configurations are composed of NiCo2S4 nanotube @Ni-Mn layered double hydroxide (LDH) arrays in situ grown on graphene sponge. The 3D graphene sponge with robust hierarchical porosity suitable for as a basal growth has been obtained from a colloidal dispersion of graphene oxide using a simple directional freeze-drying technique. The high conductive NiCo2S4 nanotube arrays grown on 3D graphene shows excellent pseudocapacity and good conductive support for high-performance Ni-Mn LDH. The 3D NiCo2S4@Ni-Mn LDH/GS shows a high specific capacitance (Csp) 1740 mF cm(-2) at 1 mA cm(-2), even at 10 mA cm(-2), 1267.9 mF cm(-2) maintained. This high-performance composite electrode proposes a new and feasible general pathway as 3D electrode configuration for energy storage devices.

Keywords: NiCo2S4; graphene; nanotube array; supercapaitor; three-dimensional.

Publication types

Research Support, Non-U.S. Gov't