Dramatic improvement enabled by incorporating thermal conductive TiN into Si-based anodes for lithium ion batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

1 Scopus Citations
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Author(s)

  • Jianming Tao
  • Lin Lu
  • Baoqi Wu
  • Xinyue Fan
  • Yanming Yang
  • Jiaxin Li
  • Yingbin Lin
  • Zhigao Huang

Detail(s)

Original languageEnglish
Pages (from-to)367-376
Journal / PublicationEnergy Storage Materials
Volume29
Online published18 Dec 2019
Publication statusPublished - Aug 2020

Abstract

Building stable SEI film is highly desirable for high-performance Si-based anode materials used in high energy-density lithium ion batteries (LIBs), which is strongly related with the generated-heat distribution in the electrode. Herein, Si/graphene@carbon embedding with TiN nanoparticles (Si/G@C/TiN) are prepared via a facile ultrasonic spraying method. The Si/G@C/TiN delivers a reversible discharge capacity of 660 ​mAh▪g−1 ​at 10 A▪g−1 and 776.5 ​mAh▪g−1 ​at 5 A▪g−1 after 400 cycles. High electronical conductivity of TiN embedding in the porous carbon framework can not only facilitate electrons transfer in the electrode, but also improve Li-ion kenetic diffusion. High thermal conductivity of TiN would be helpful to faster heat-dissipation and uniform heat-distribution in the electrode during the charging/discharging process, resulting in balanced growth of stable SEI film and excellent cycling stability especially at elevated temperature. Moreover, Si/G@C/TiN pouch cells using LiNi0.5Co0.2Mn0.3O2 as cathode, deliver impressive energy density of ~476 ​Wh▪kg-1 based on the total weight of active materials, suggesting its promising application in the high energy-density LIBs.

Research Area(s)

  • Lithium-ion batteries, Pouch cell performance, Silicon-based anodes, TiN modification, Ultrasonic spraying

Citation Format(s)

Dramatic improvement enabled by incorporating thermal conductive TiN into Si-based anodes for lithium ion batteries. / Tao, Jianming; Lu, Lin; Wu, Baoqi; Fan, Xinyue; Yang, Yanming; Li, Jiaxin; Lin, Yingbin; Li, Yang Yang; Huang, Zhigao; Lu, Jian.

In: Energy Storage Materials, Vol. 29, 08.2020, p. 367-376.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal