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High Capacity and Fast Charge-Discharge Li4Ti5O12 Nanoflakes/TiO2 Nanotubes Composite Anode Material for Lithium Ion Batteries

Title
High Capacity and Fast Charge-Discharge Li4Ti5O12 Nanoflakes/TiO2 Nanotubes Composite Anode Material for Lithium Ion Batteries
Author
이윤정
Keywords
LTO nanoflakes; TiO2 nanotubes; composite anodes; lithium ion batteries
Issue Date
2018-07
Publisher
WILEY-V C H VERLAG GMBH
Citation
ENERGY TECHNOLOGY, v. 6, no. 12, page. 2461-2468
Abstract
Li4Ti5O12 nanoflakes (LTO-NF) and TiO2 nanotubes (TNT) are synthesized and mechanically mixed to form acomposite anode material with high specific capacitance, fast charge-discharge capability, and long cycle life for lithium ion batteries. The LTO-NF have a thin morphology and smaller grain size which increases grain boundaries for increased capacitance and faster lithiation and delithiation. TNT are included as part of the composite to help increase specific capacitance as well as facilitate ion and electron transport for fast charge transfer kinetics. To analyze the morphological and chemical characteristics of the composite, scanning and transmission electron microscopy, X-ray diffraction, and Braun-Emmett-Teller method are conducted. The charge discharge tests show that the composite LTO-NF/TNT has increased specific capacitance and cycling performance with a 98.3 % capacitance retention and specific capacitance of 160 mAh g(-1) after 500 cycles at 5 C, which translates to higher energy and power density for various energy storageapplications including automotive use.
URI
https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.201800364http://repository.hanyang.ac.kr/handle/20.500.11754/119528
ISSN
2194-4288; 2194-4296
DOI
10.1002/ente.201800364
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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