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Article
Rapid synthesis of Li4Ti5O12 microspheres as anode materials and its binder effect for lithium-ion battery
Faculty of Engineering - Papers (Archive)
  • Shulei Chou, University of Wollongong
  • Jiazhao Wang, University of Wollongong
  • Hua-Kun Liu, University of Wollongong
  • S. X. Dou, University of Wollongong
RIS ID
38495
Publication Date
1-1-2011
Publication Details

Chou, S., Wang, J., Liu, H. Dou, S. (2011). Rapid synthesis of Li4Ti5O12 microspheres as anode materials and its binder effect for lithium-ion battery. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 115 (32), 16220-16227.

Abstract

Li4Ti5O12 microspheres composed of nanoflakes were synthesized within 1 h by a combination of a microwave-assisted hydrothermal method and a microwave postannealing process. The Li4Ti5O12 microspheres were characterized by X-ray diffraction, Brunauer–Emmett–Teller N2 adsorption, scanning electron microscopy, Raman spectroscopy, and transmission electron microscopy. Sodium carboxymethyl cellulose (CMC) was also investigated as a low-cost green binder. The electrochemical tests, including constant current charge–discharge, cyclic voltammetry, and electrochemical impedance spectroscopy, demonstrated that the electrode using CMC as binder had better high-rate capability than the one with polyvinylidene fluoride (PVDF) binder. The electrode using CMC and PVDF as binder had the same lithium diffusion coefficient. The electrode using CMC as binder showed much lower charge transfer resistance, lower apparent activation energy, and lower apparent diffusion activation energy than for the electrode using PVDF as the binder. Apparent activation energies of Li4Ti5O12 microsphere electrodes using CMC and PVDF as binder were calculated to be 26.8 and 33.6 kJ mol–1, respectively.

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Citation Information
Shulei Chou, Jiazhao Wang, Hua-Kun Liu and S. X. Dou. "Rapid synthesis of Li4Ti5O12 microspheres as anode materials and its binder effect for lithium-ion battery" (2011) p. 16220 - 16227
Available at: http://works.bepress.com/shulei/26/