Dramatic improvement enabled by incorporating thermal conductive TiN into Si-based anodes for lithium ion batteries
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Pages (from-to) | 367-376 |
Journal / Publication | Energy Storage Materials |
Volume | 29 |
Online published | 18 Dec 2019 |
Publication status | Published - Aug 2020 |
Link(s)
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 et al.
In: Energy Storage Materials, Vol. 29, 08.2020, p. 367-376.
In: Energy Storage Materials, Vol. 29, 08.2020, p. 367-376.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review