期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 3, 页码 691-696出版社
AMER CHEMICAL SOC
DOI: 10.1021/am302197y
关键词
titanates; nitrogen doping; electrospinning; lithium ion batteries; 1D nanostructure; TiO2Nx
资金
- Australian Research Council Discovery Project [DP1096546]
- Basic Science Research Program through the National Research Foundation of Korea [20090072972]
- MEST
- R&D program for Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Knowledge Economy, Republic of Korea
- MEST (Ministry of Education Science and Technology)
- KOFST (The Korean Federation of Science and Technology Societies)
- [NRF-2010-C1AAA001-0029018]
- National Research Council of Science & Technology (NST), Republic of Korea [KK-1302-F0, KK-1302] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2012M1A2A2671807] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The morphology and electronic structure of metal oxides, including TiO2 on the nanoscale, definitely determine their electronic or electrochemical properties, especially those relevant to application in energy devices. For this purpose, a concept for controlling the morphology and electrical conductivity in TiO2, based on tuning by electrospinning, is proposed. We found that the 1D TiO2 nanofibers surprisingly gave higher cyclic retention than 0D nanopowder, and nitrogen doping in the form of TiO2Nx also caused further improvement. This is due to higher conductivity and faster Li+ diffusion, as confirmed by electrochemical impedance spectra. Our findings provide an effective and scalable solution for energy storage efficiency.
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