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Chemcial Industry and Engineering 2024, Vol. 41 Issue (3) :154-160    DOI: 10.13353/j.issn.1004.9533.20220818
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Preparation and properties of lithium titanate composite electrode by one-step method
DONG Hao, WANG Ying, LU Chunchi, XU Sha, ZHANG Hengyun, CAO Juyong
Shanghai University of Engineering Science, Shanghai 201620, China

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Abstract Rechargeable lithium-ion batteries (LIBs) have been widely used in portable electronics, electric vehicles, etc. Optimizing battery anode is one of the important research directions to improve battery performance and reduce battery cost. The spinel-structured Li4Ti5O12 (LTO) anode material was prepared by sol-gel method. Lithium bromide (LiBr) and LTO were used to prepare the Br-modified LTO composite electrode by solution mixing method, and the modified LTO composite electrode was completed in one step during the electrode preparation process. The microscopic morphology and crystal structure of the modified LTO composite electrode were observed by scanning electron microscope and X-ray diffractometer. Electrochemical tests were carried out on the modified LTO composite electrode using battery charge and discharge test instruments and electrochemical workstations. The experimental results show that the modified LTO composite electrode sample can reach a specific capacity of 208.7 mAh·g-1 at 0.1 C charge and discharge, which is 30.9% higher than that of the original LTO electrode sample.
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DONG Hao
WANG Ying
LU Chunchi
XU Sha
ZHANG Hengyun
CAO Juyong
Keywordslithium-ion batteries   composite electrode   spinel structure LTO   LiBr     
Received 2022-10-07;
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DONG Hao, WANG Ying, LU Chunchi, XU Sha, ZHANG Hengyun, CAO Juyong.Preparation and properties of lithium titanate composite electrode by one-step method[J]  Chemcial Industry and Engineering, 2024,V41(3): 154-160
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