期刊
CARBON
卷 84, 期 -, 页码 491-499出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.12.040
关键词
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资金
- National Natural Science Foundation of China [51273158, 21303131, 51303105]
- Natural Science Basis Research Plan in Shaanxi Province of China [2012JQ6003, 2013KJXX-49]
- Ph.D. Programs Foundation of Ministry of Education of China [20120201120048]
- Program for New Century Excellent Talents in University [NCET-13-0449]
- Fundamental Research Funds for the Central Universities
In this work, we report the synthesis of one-dimensional (1-D) hierarchical NiO nanosheets covering bamboo-like amorphous CNT composites (NiO@CNT) via a facile and a low-cost solution route based on sulfonated polymeric nanotubes (PNTs) used simultaneously as both, a template, and a source of nano-structured carbon derived by a low-temperature thermal carbonization treatment. The electrochemical performance of the NiO@CNT composite electrode indicate that this novel hybrid nanostructure is potentially capable of delivering excellent reversible capacity when used as an anode material in a lithium-ion battery (LIB). A large discharge capacity of 1034 mAh g(-1) is delivered by the NiO@CNT composite even after 300 cycles at a relatively high current density of 800 mA g(-1), with an average coulombic efficiency of 98.1%. A significant achievement in the reversible capacity of the NiO@CNT composite is attributed to the outstanding nanostructure resulting in synergistic effects of the hollow amorphous CNT backbone and ultrathin NiO nanosheets. Furthermore, the generic solution method to fabricate 1-D metal oxides@amorphous CNT nanostructures, developed in this work, is expected to have a wide range of applications in improving the properties of transition metal oxides. (C) 2014 Elsevier Ltd. All rights reserved.
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