Novel secondary assembled micro/nano porous spheres ZnCo2O4 with superior electrochemical performances as lithium ion anode material.
Nanotechnology
; 29(32): 325603, 2018 Aug 10.
Article
em En
| MEDLINE
| ID: mdl-29757163
In this work, novel secondary assembled micro/nano porous spheres ZnCo2O4 were firstly prepared by combining the hydrothermal method with post-synthesis calcinations. The structure and morphology of the obtained powder were characterized by x-ray powder diffraction and field emission-scanning electron microscopy. As the anode material of lithium-ion half-cells, the as-prepared ZnCo2O4 delivered a very high capacity, extra cycling stability and excellent rate capability. A discharge capacity of 950 mAh g-1 with up to 99.7% retention corresponding to the second cycle at 0.1 C was achieved after 90 cycles, which was an improved cyclability over previous reports. The higher current charge-discharge and electrochemical impedance spectroscopy data indicate that the material's integrity was maintained. Therefore constructing the secondary assembled 3D micro/nano structure is an effective strategy to obtain the superior electrochemical performances.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Ano de publicação:
2018
Tipo de documento:
Article
País de publicação:
Reino Unido