Mesh-liked Carbon Nanosheets Intercalated into Layered TiO_(2)as a Zero-strain Anode for Lithium-ion Storage  

作　　者：FU Wen-Wu ZHANG Ming SHEN Zhong-Rong 傅文武;张明;申仲荣(College of Chemistry,Fuzhou University,Fuzhou 350108,China;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;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)

机构地区：[1]College of Chemistry,Fuzhou University,Fuzhou 350108,China [2]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 [3]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

出　　处：《Chinese Journal of Structural Chemistry》2021年第6期797-805,686,共10页结构化学（英文）

基　　金：the National Natural Science Foundation of China(No.21905282);the State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences(No.20190016)。

摘　　要：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/TiO_(2)(MC/TiO_(2))composite by using a layered TiO_(2)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 TiO_(2)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/TiO_(2)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.

关 键 词：layered titanium dioxide Schiff base reaction lithium-ion battery zero-strain anode 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ134.11[化学工程—无机化工]