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Citation: Liu En-Hui, Li Xin-Hai, Hou Zhao-Hui, He Ze-Qiang, Deng Ling-Feng. Chemical Diffusion Behaviors of Lithium-ion in the LiV₃O₈ Prepared by Wet Method Reaction[J]. Acta Physico-Chimica Sinica, ;2004, 20(04): 377-381. doi: 10.3866/PKU.WHXB20040409 shu

Chemical Diffusion Behaviors of Lithium-ion in the LiV₃O₈ Prepared by Wet Method Reaction

1.
School of Metallurgical Science and Engineering, Central South University, Changsha　410083

Received Date: 6 October 2003
Available Online: 15 April 2004

LiV3O8 as a cathode material for lithium ion batteries was synthesized by solution reaction and low temperature calcinations technique with V2O5•nH2O hydro-gels and Li2CO3 as raw materials. The precursor and product were characterized by DTA-TG, XRD measurements. Electrochemical behavior of the LiV3O8 as a cathode material for rechargeable lithium-ion batteries was studied by galvanostatic charge-discharge measurement. The experiment showed that the active material LiV3O8 was of higher charge-discharge capacity and excellent cycling behavior. Lithium-ion chemical diffusion coefficient (DLi＋) of the LiV3O8 electrode was determined by the potentiostatic intermittent titration technique (PITT).DLi＋ values obtained were in the range of 10－8～10－10 cm2•s－1,depending on x-values in Li1＋xV3O8.The activation energy of lithium-ion diffusion (Ea) obtained was in the range of 25～42 kJ•mol－1(x=0.18～2.5).
- Lithium trivanadate;Wet method reaction;Diffusion;Activation energy;　Lithium-ion battery
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沈阳化工大学材料科学与工程学院沈阳 110142

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Chemical Diffusion Behaviors of Lithium-ion in the LiV3O8 Prepared by Wet Method Reaction

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通讯作者: 陈斌, bchen63@163.com

Chemical Diffusion Behaviors of Lithium-ion in the LiV₃O₈ Prepared by Wet Method Reaction