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author:

Liu, Bingheng (Liu, Bingheng.) [1] | Gu, Bo (Gu, Bo.) [2] | Wang, Jingxian (Wang, Jingxian.) [3] | Li, Anchang (Li, Anchang.) [4] | Zhang, Ming (Zhang, Ming.) [5] | Shen, Zhongrong (Shen, Zhongrong.) [6]

Indexed by:

EI

Abstract:

Defect engineering is one of the effective ways to improve the electrochemical property of electrode materials for lithium-ion batteries (LIB). Herein, an organic functional molecule of pphenylenediamine is embedded into two-dimensional (2D) layered TiO2 as the electrode for LIB. Then, the 2D carbon/TiO2 composites with the tuning defects are prepared by precise control of the polymerization and carbothermal atmospheres. Low valence titanium in metal oxide and nitrogendoped carbon nanosheets can be obtained in the carbon/TiO2 composite under a carbonization treatment atmosphere of N2 /H2 gas, which can not only increase the electronic conductivity of the material but also provide sufficient electrochemical active sites, thus producing an excellent rate capability and long-term cycle stability. The prepared composite can provide a high capacity of 396.0 mAh g−1 at a current density of 0.1 A g−1 with a high capacitive capacity ratio. Moreover, a high specific capacity of 80.0 mAh g−1 with retention rate of 85% remains after 10,000 cycles at 3.0 A g−1 as well as the Coulomb efficiency close to 100%. The good rate-capability and cycle-sustainability of the layered materials are ascribed to the increase of conductivity, the lithium-ion transport channel, and interfacial capacitance due to the multi-defect sites in the layered composite. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keyword:

Carbon Carbonization Defect engineering Electrochemical electrodes Ions Lithium-ion batteries Metals Nanosheets Titanium dioxide Tuning

Community:

  • [ 1 ] [Liu, Bingheng]College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Liu, Bingheng]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 ] [Liu, Bingheng]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China
  • [ 4 ] [Gu, Bo]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
  • [ 5 ] [Gu, Bo]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China
  • [ 6 ] [Wang, Jingxian]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
  • [ 7 ] [Wang, Jingxian]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China
  • [ 8 ] [Li, Anchang]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
  • [ 9 ] [Li, Anchang]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China
  • [ 10 ] [Zhang, Ming]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
  • [ 11 ] [Zhang, Ming]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China
  • [ 12 ] [Shen, Zhongrong]College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 13 ] [Shen, Zhongrong]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
  • [ 14 ] [Shen, Zhongrong]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen; 361021, China

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Source :

Materials

Year: 2022

Issue: 5

Volume: 15

3 . 4

JCR@2022

3 . 1 0 0

JCR@2023

ESI HC Threshold:91

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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