期刊
RSC ADVANCES
卷 5, 期 61, 页码 49765-49770出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra05659d
关键词
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资金
- National High-Tech R&D Program of China [2015AA034601]
- National Natural Science Foundation of China [91333122, 51402106, 51372082, 51202067]
- Ph.D. Programs Foundation of Ministry of Education of China [20110036110006, 20120036120006, 20130036110012]
- Par-Eu Scholars Program
- Fundamental Research Funds for the Central Universities
3D NiO microspheres assembled from porous nanosheets are prepared and evaluated as an anode material for lithium-ion batteries, showing excellent electrochemical performance with high lithium storage capacity, and satisfactory cyclability and rate performance. The NiO microspheres deliver a first discharge capacity of 1242 mA h g(-1) with a reversible capacity up to 820 mA h g(-1) after 100 cycles at a current of 100 mA g(-1) in a half cell, also exhibiting an ameliorative rate capacity of 634 mA h g(-1) at the current of 1 A g(-1). The high lithium storage performance can be mainly ascribed to the porous nanosheets, which improve lithium ion transfer, provide sufficient electrode/electrolyte contact areas, and more efficiently accommodate the volume change that occurs with the lithiation/delithiation process. Moreover, the 3D microsphere architecture is also helpful for enhancing the electrochemical performance of the lithium-ion battery. The results indicate the great potential of the 3D NiO microspheres assembled from porous nanosheets for use as an anode material for lithium-ion batteries.
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