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Citation: Wen-Wu FU, Ming ZHANG, Zhong-Rong SHEN. Mesh-liked Carbon Nanosheets Intercalated into Layered TiO2 as a Zero-strain Anode for Lithium-ion Storage[J]. Chinese Journal of Structural Chemistry, ;2021, 40(6): 797-805. doi: 10.14102/j.cnki.0254–5861.2011–3054 shu

Mesh-liked Carbon Nanosheets Intercalated into Layered TiO2 as a Zero-strain Anode for Lithium-ion Storage

  • a.

    College of Chemistry, Fuzhou University, Fuzhou 350108, 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 Institutes, Chinese Academy of Sciences, Xiamen 361021, China

  • Corresponding author: Ming ZHANG, mingzhang@fjirsm.ac.cn Zhong-Rong SHEN, z-shen@fjirsm.ac.cn
  • Received Date: 4 December 2020
    Accepted Date: 15 January 2021

    Fund Project: the National Natural Science Foundation of China 21905282the State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 20190016

Figures(7)

  • Volume change during the insertion/extraction of Li+ in electrode materials is an important issue to affect the safety and stability of Li-ion batteries. Here, we prepare a near-zero volume change material of COF derived mesh-liked carbon/TiO2 (MC/TiO2) composite by using a layered TiO2 as a template, and a two-dimensional COF material is inserted into the interlayers by the Schiff base polymerization between melamine and terephthalaldehyde, followed by carbonization at 500 ℃ to convert COF to mesh-liked carbon nanosheets. Due to the introduction of mesh-liked carbon nanosheets, the interlayer conductivity of TiO2 is improved, and the nanocavities in mesh-liked carbon nanosheets provide additional chambers for the insertion/extraction of Li-ions without any change of the interlayer distance. The MC/TiO2 shows a specific capacity of 472.7 mAh/g at a current density of 0.1 A/g, and good specific capacity retention of 65% remains after 1000 cycles at a current of 1 A/g.
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