Preparation and transport property of nano-Li4Ti5O12 anode materials

LIAN Tian-rou; LU Yu-xiao; WU Bing; SHI Guang-yue; MA Lei; LIU Lei; LOU Jian-zhong

doi:10.11868/j.issn.1001-4381.2019.000955

Cailiao gongcheng (Mar 2021)

Preparation and transport property of nano-Li4Ti5O12 anode materials

LIAN Tian-rou,
LU Yu-xiao,
WU Bing,
SHI Guang-yue,
MA Lei,
LIU Lei,
LOU Jian-zhong

Affiliations

LIAN Tian-rou: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
LU Yu-xiao: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
WU Bing: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
SHI Guang-yue: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
MA Lei: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
LIU Lei: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China
LOU Jian-zhong: Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2019.000955
Journal volume & issue: Vol. 49, no. 3
pp. 59 – 66

Abstract

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Li4Ti5O12 (LTO) anode materials are successfully prepared by sol-gel method using butyl phthalate and lithium acetate as precursors.The phase and morphology of the material were characterized by X-ray diffraction,scanning electron microscopy and transmission electron microscopy. The effects of calcination conditions and coating modification on transport properties of LTO were also studied.The results show that the ionic conductivity and electronic conductivity of the sample prepared at 800 ℃ and 10 h are 8.8×10-8 S/cm and 8.53×10-10 S/cm, respectively. The ionic and electronic conductivities of LTO/C are 4.35×10-7 S/cm and 9.63×10-8 S/cm, respectively.The electrochemical performance tests show that the first discharge capacity of carbon-coated active materials can reach 172.4 mAh/g at the ratio of 0.1 C.After 50 cycles at 5 C,the capacity retention rate can reach 94.4%,indicating a good electrochemical performance of the samples.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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