Citation: Yan-Jie HU, Yan-Hong YIN, Ming ZHANG, Zi-Ping WU, Zhong-Rong SHEN. In-situ Growth of Carbon Nanosheets Intercalated with TiO₂ for Improving Electrochemical Performance and Stability ofLithium-ion Batteries[J]. Chinese Journal of Structural Chemistry, ;2021, 40(11): 1513-1524. doi: 10.14102/j.cnki.0254-5861.2011-3189 shu

In-situ Growth of Carbon Nanosheets Intercalated with TiO₂ for Improving Electrochemical Performance and Stability ofLithium-ion Batteries

Yan-Jie HU ^{a, b, c} ,
Yan-Hong YIN ^a,, ,
Ming ZHANG ^{b, c} ,
Zi-Ping WU ^a,, ,
Zhong-Rong SHEN ^{b, c,,}

a.
Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
b.
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
c.
The Laboratory of Rare-earth Functional Materials and Green Energy, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China

Corresponding author: Yan-Hong YIN, yinyanhong@jxust.edu.cn Zi-Ping WU, wuziping724@jxust.edu.cn Zhong-Rong SHEN, z-shen@fjirsm.ac.cn
Received Date: 22 March 2021
Accepted Date: 6 May 2021

Fund Project: the National Natural Science Foundation of China 22062008the China Scholarship Council 201908360233the Jiangxi Provincial Department of Science and Technology GJJ190436the Jiangxi Provincial Department of Science and Technology 2019KY56

Figures(6)

In situ growth of carbon nanomaterials on active substance is a very favorable strategy for the preparation of electrode in lithium-ion batteries with excellent electrochemical performance and high stability. Small-sized TiO₂ nanoparticles intercalated into carbon nanosheets (CNS@TiO₂SNP-600) were successfully synthesized via in-situ polymerization-carbonization method, utilizing layered H₂Ti₄O₉ (HTO) as template and benzidine as carbon source. The morphology and size of TiO₂ are greatly influenced by carbonization temperature. The coin cell with the CNS@TiO₂SNP-600 electrode demonstrates a discharge specific capacity of 430.4 mAh⋅g^-1 at a current density of 0.1 A⋅g^-1, and the capacity retention rate is 88.1% after 100 cycles; and it also displays a high discharge specific capacity of 101.8 mAh⋅g^-1 at a high current density of 12.8 A⋅g^-1. The excellent electrochemical performances can be ascribed to the capacitance effect originated from the intercalated structure of in-situ grown CNS and TiO₂ nanoparticles. We believe this type of materials can be widely used in the lithium-ion batteries and other related green chemical fields.
- carbon nanosheets,
- TiO₂,
- in situ growth,
- template,
- storage lithium
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In-situ Growth of Carbon Nanosheets Intercalated with TiO2 for Improving Electrochemical Performance and Stability ofLithium-ion Batteries

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In-situ Growth of Carbon Nanosheets Intercalated with TiO₂ for Improving Electrochemical Performance and Stability ofLithium-ion Batteries