Last modified: 2014-10-11
Abstract
The poor cell lifetimes of Li-ion batteries are rooted mainly in side reactions occurring at the electrode-electrolyte interface. The use of surface coatings to control of the electrode-electrolyte interface is an important strategy to design new electrodes. This talk will include two parts:
In the first part, I will report our work on the applications of atomic layer deposition (ALD) in Li ion batteries [1] including synthesis of coating materials such as Al2O3, ZrO2, TiO2, AlPO4 and LiTaO3 [2,3,4] as well as the ALD coating materials to modify the anode (Li4Ti5O12, SnO2) [5] and the cathode (commercial LiCoO2, NMC) [6].
In the second part, I will discuss carbon coating on LiFePO4 surface [7]. In particular, the focus will be on size-dependent surface phase change of lithium ion phosphate during carbon coating.
References
Reference:
[1] X. Meng, X.-Q. Yang, X. Sun. Adv. Mater. 2012, 24, 3589-3615.
[2] J. Liu, X. Meng, Y. Hu, D. Geng, M.N. Banis, M. Cai, R. Li, X. Sun. Carbon 2013, 52, 74-82.
[3] J. Liu, Y. Tang, B. Xiao, T.K. Sham, R. Li, X. Sun. RSC Adv. 2013, 3, 4492-4495.
[4] J. Liu, M. Banis, X. Li, A. Lushington, M. Cai, R. Li, T.-K. Sham, X. Sun, J. Phys. Chem. C 117 (2013)
20260-20267
[5] X. Li, X. Meng, J. Liu, D. Geng, Y. Zhang, M. Banis, Y. Li, R. Li, X. Sun, M. Cai, M. Verbrugge, Adv.
Funct. Mater. 22 (2012) 1647-1654.
[6] X. Li, J. Liu, M. Banis, A. Lushington, R. Li, M. Cai, X. Sun, Energy Environ. Sci. 7 (2) (2014) 768-778
[7] . J. Wang, J. Yang, Y. Tang, J. Liu, Y. Zhang, G. Liang, M. Gauthier, M. Banis, X. Li, R. Li, T. -K. Sham, X. Sun, Size-dependent surface phase change of lithium ion phosphate during carbon coating. Nature Communications. 5 (2014) 3145.