Soft-templated LiFePO4/mesoporous carbon nanosheets (LFP/meso-CNSs) nanocomposite as the cathode material of lithium ion batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21325-21331 ◽  
Author(s):  
Ruofei Wu ◽  
Guofeng Xia ◽  
Shuiyun Shen ◽  
Fengjuan Zhu ◽  
Fengjing Jiang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mesoporous Carbon ◽  
Electronic Conductivity ◽  
Active Material ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Carbon Nanosheets ◽  
High Electronic Conductivity ◽  
Nano Size

A soft-templated LFP/mesoporous carbon nanosheets (LFP/meso-CNSs) nanocomposite as the cathode of lithium ion batteries displays an excellent high-rate capability and stable cycling property, benefitting from its high electronic conductivity, open mesoporosity, and the nano-size of its active material.

scholarly journals Surface nitridation of Li4Ti5O12 by thermal decomposition of urea to improve quick charging capability of lithium ion batteries

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jihyun Jang ◽  
Tae Hun Kim ◽  
Ji Heon Ryu
Keyword(s):  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Rate ◽  
High Electronic Conductivity ◽  
Negative Electrode Material ◽  
Initial Coulombic Efficiency

AbstractAs the application of lithium-ion batteries in electric vehicles increases, the demand for improved charging characteristics of batteries is also increasing. Lithium titanium oxide (Li4Ti5O12, LTO) is a negative electrode material with high rate characteristics, but further improvement in rate characteristics is needed for achieving the quick-charging performance required by electric vehicle markets. In this study, the surface of LTO was coated with a titanium nitride (TiN) layer using urea and an autogenic reactor, and electrochemical performance was improved (initial Coulombic efficiency and the rate capability were improved from 95.6 to 4.4% for pristine LTO to 98.5% and 53.3% for urea-assisted TiN-coated LTO, respectively. We developed a process for commercial production of surface coatings using eco-friendly material to further enhance the charging performance of LTO owing to high electronic conductivity of TiN.

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