V₁₀O₂₈^-6 Cluster Compound, a Promising Cathode Material for Li Ion Battery

Abstract:

A novel cathode material, lithium and natrium decavanadate (Li₂Na₄V₁₀O₂₈) with three-dimensional tunnels framework structure for lithium ion battery, has been prepared by hydrothermal synthesis and followed annealing treatment. The molecule structure and electrochemical properties of the samples have been further characterized. The novel material shows good reversibility for Li+ insertion/extraction and long cycle life. High discharge capacity (262 mAh/g) is obtained at 0.2mA/cm2 discharge current and potential range between 1.5~4.5V vs. Li⁺/Li. AC impedance for the Li/Li₂Na₄V₁₀O₂₈ cell reveals that the cathode process is controlled mainly by Li⁺ diffusionin the active material.

• Periodical: Advanced Materials Research (Volume 1088)
• Pages: 337-342
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1088.337
• Online since: February 2015
• Authors: Ai Li Xie*, Lian Bang Wang, You Qun Chu, Chun An Ma
• Keywords: Cathode Material, Decavanadate, Hydrothermal Synthesis, Lithium Ion Battery

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