Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 29, Pages 15840-15847Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b03042
Keywords
NiCo2S4; nanotube array; graphene; supercapaitor; three-dimensional
Funding
- National Natural Science Foundation of China [51302097]
- Wuhan Planning Project of Science and Technology [2013011801010594]
- Analytical and Testing Center of Huazhong University of Science and Technology
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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 (C-sp) 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.
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