Journal
CERAMICS INTERNATIONAL
Volume 41, Issue 10, Pages 13532-13540Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.07.147
Keywords
Anode materials; ZnO-NiO; Graphene; Electrochemical performance
Categories
Funding
- Research Fund for the Doctoral Program of Higher Education of China [20136102110046]
- Innovation Foundation of Shanghai Aerospace Science and Technology [SAST201373]
- Seed Fund of Innovation and Creation for Graduate Students in Northwestern Polytechnical University [Z2015033]
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Flower-like ZnO-NiO mesoporous architectures were synthesized through annealing the zinc hydroxide carbonate nickel hydroxide carbonate composite precursor, which was prepared via a one-pot hydrothermal route. More importantly, we successfully prepared flower-like porous ZnO-NiO/graphene composites by introducing flexible graphene into the flower-like porous ZnO-NiO. In addition, we explore the application of the 3D flower-like ZnO-NiO composite mesoporous architectures and flower-like porous ZnO-NiO/graphene composites as anode materials for lithium ion battery. Electrochemical study presented that the as-prepared flower-like porous ZnO-NiO/graphene composites demonstrate excellent electrochemical performance and cycling stability. The first discharge capacity is 1205.7 mA h/g at a high current density of 300 mA/g. After 50 cycles, the reversible capacity is 452.7 mA h/g at a current density of 300 mA/g and the coulomb efficiency reaches at 99%.The improved electrochemical performances are mainly attributed to its morphological characteristics of mesoporous, nanosheet self-assembling architectures, as well as the addition of graphene. These results suggest that such 3D flower-like porous ZnO-NiO/graphene composites are promising materials for lithium ion battery. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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