期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 688, 期 -, 页码 588-595出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.07.055
关键词
Electrode materials; Oxide materials; Electrochemical reactions; Electrochemical impedance spectroscopy
资金
- National Natural Science Foundation of China [51102196]
- Science and Technology Project of the Young Star of Shaanxi Province [2014KJXX-68]
- Innovation Team Assistance Foundation of Shaanxi Province [2013KCT-06]
- Scientific Research Project of Shaanxi Education Department [14Jk1104]
- Postgraduate Innovative Project of SUST [2014011]
Assembled-sheets-like MoO3 (A-MoO3) has been synthesized from precursor hexagonal-rods (H-MoO3) with a facile heat treatment route. The assembled sheets structure is much looser than H-MoO3. As an anode for lithium ion batteries, A-MoO3 maintains an improved discharge capacity of 889 mAh g(-1) over 100 cycles with capacity retention of similar to 100%, compared with H-MoO3. Meanwhile, A-MoO3 delivers enhanced rate capability (567 mAh g(-1) at 2 C). The excellent cycle stability and better rate performance of A-MoO3 are associated with a porous-interweaved structure obtained after several cycles. The porous-interweaved structure can facilitate lithium ion and electron transfer. Over 100 cycles, the stable structure can be still preserved, exhibiting better structural stability than precursor H-MoO3. The enhanced electrochemical performance makes the A-MoO3 a promise for applications as high capacity lithium ion batteries anodes. (C) 2016 Elsevier B.V. All rights reserved.
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