期刊
RSC ADVANCES
卷 7, 期 6, 页码 3293-3301出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra25651a
关键词
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资金
- National Natural Science Foundation of China [11474242, 51272220]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT13093]
- Hunan Provincial Innovation Foundation for Graduate [CX2016B254]
A nanocomposite composed of crystalline Li4Ti5O12 (LTO) nanosheets and multi-walled carbon nanotubes (denoted as LTO/MWCNTs) is prepared for lithium/sodium storage via a facile hetero-assembly process driven by the screening effect of electrostatic repulsion and following thermal treatment. The morphology and microstructure characterizations reveal that LTO nanosheets are embedded in a highly porous and electrically conductive MWCNT network, thereby producing robust inner-connected architectures. Owing to improved electron and ion transportation during electrochemical reaction rendered by a unique integrated architecture of two-dimensional LTO nanosheets and MWCNTs, the nanocomposite exhibits excellent lithium and sodium storage performances. For lithium ion batteries, the anode delivers reversible capacity of 149.7 mA h g(-1) at 10C after 500 cycles. As anode for sodium ion batteries, it has reversible capacity of 82 mA h g(-1) at 5C. The prepared LTO/MWCNT nanocomposite has great potential as a high-performance anode material for dual storage applications in lithium and sodium ion batteries.
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