Synthesis and Electrochemical Performance of K-Doped Li₄Ti₅O₁₂ as Anode Material for Lithium-Ion Batteries

Abstract:

Spinel Li_4-xK_xTi₅O₁₂ (x=0, 0.03) were successfully synthesized by a traditional solid-state method and systematically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and the charge-discharge test, respectively. The results demonstrated that Li_3.97K_0.03Ti₅O₁₂ exhibited much better rate performance in comparsion with Li₄Ti₅O₁₂. At 0.2 C and 10 C, it delivered a discharge capacity of 173 mAh g^-1 and 124 mAh g^-1 respectively, and after 100 cycles at 10 C, 96.1% of its initial capacity was retained.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 495-498
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.495
• Online since: September 2014
• Authors: Xiao Bing Huang*, Hong Hui Chen, Shi Biao Zhou, Yuan Dao Chen, Bei Ping Liu, Xian Guang Zeng
• Keywords: K-Doping, Li₄Ti₅O₁₂, Lithium-Ion Battery, Solid State Reaction

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