Journal
ELECTROCHIMICA ACTA
Volume 214, Issue -, Pages 1-10Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.08.022
Keywords
amorphous; hollow; MnSnO3; nitrogen-doped graphene; long-term
Categories
Funding
- National Natural Science Foundation of China [21576138, 21103092]
- Ph.D. Program Foundation of Ministry of Education of China [20133219110018]
- Six Major Talent Summit [XNY-011]
- Science and Technology Support Plan [BE2013126]
- PAPD of Jiangsu Province, China
- program for Science and Technology Innovative Research Team in Universities of Jiangsu Province
- [NCET-12-0629]
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Tin-based metal oxides usually suffer from severe capacity fading resulting from aggregation and considerable volume variation during the charge/discharge process in lithium ion batteries. In this work, a novel nanocomposite (MTO/N-RGO) of hollow amorphous MnSnO3 (MTO) nanoparticles and nitrogen doped reduced graphene oxide (N-RGO) has been designed and synthesized by a two-step method. Firstly, the nitrogen-doped graphene nanocomposite (MTO/N-RGO-P) with MnSn(OH)(6) crystal nano particles was synthesized by a facile solvothermal method. Subsequently, the MTO/N-RGO nano composite was obtained through the post heat treatment of MTO/N-RGO-P. The designed heterostructure and well-combination of the hollow amorphous MTO and N-RGO matrix can accelerate the ionic and electronic transport, and simultaneously accommodate the aggregation and volume variation of MTO nanoparticles during the lithiation-delithiation cycles. The as-prepared hybrid of MTO and N-RGO (MTO/N-RGO) exhibits a high reversible capacity of 707 mAh g(-1) after 110 cycles at 200 mA g(-1), superior rate capability, and long-term cyclic life with high capacity of 610 mAh g(-1) over 1000 cycles at 400 mAg(-1). Superior capacity retention of 97.3% over 1000 cycles was obtained. This work opens new opportunities to fabricate the high-performance electrode materials with heterostructure for lithium storage systems, especially for novel multi-metal oxide based nanocomposites with high cycling stability. (C) 2016 Elsevier Ltd. All rights reserved.
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