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Cylindroid‐Like Li 4 Ti 5 O 12 Mesocrystals for High‐Rate and Long‐Life Lithium‐Ion Battery Anodes
Author(s) -
Wang Dongdong,
Shan Zhongqiang,
Tian Jianhua
Publication year - 2020
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202000040
Subject(s) - materials science , anode , mesoporous material , annealing (glass) , lithium ion battery , lithium (medication) , thermal stability , ion , chemical engineering , cycling , battery (electricity) , electrode , metallurgy , chemistry , catalysis , power (physics) , physics , organic chemistry , medicine , biochemistry , quantum mechanics , archaeology , engineering , history , endocrinology
A high rate and long life are two crucial factors for next‐generation lithium‐ion batteries (LIBs). Here, we report cylindroid‐like Li 4 Ti 5 O 12 mesocrystals (CL‐LTO‐MC) obtained by a simple solvothermal reaction and following short thermal annealing process. Owing to the single‐crystal nature and mesoporous structures, CL‐LTO‐MC demonstrates a high specific capacity (174.7 mA h g −1 at 1 C), superior rate performance (145 mA h g −1 at 50 C) and excellent cycling stability (95.5% capacity retention after 3000 cycles at 20 C). Besides, the CL‐LTO‐MC/LiNi 0.5 Mn 1.5 O 4 full cells also display a remarkable cycle performance with 95.7% capacity retention after 500 cycles at 5 C. These results indicate that CL‐LTO‐MC is a promising anode material for high‐rate and long‐cycling LIBs.
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