Citation: Lu Fan, Yang Jie, Zhou Ling, Wang Xinyue, Yang Yin, Li Jumei. Enhanced electrochemical performance and mechanism study of AgLi_1/3Sn_2/3O₂ for lithium storage[J]. Chinese Chemical Letters, ;2019, 30(12): 2017-2020. doi: 10.1016/j.cclet.2019.04.019 shu

Enhanced electrochemical performance and mechanism study of AgLi_1/3Sn_2/3O₂ for lithium storage

Lu Fan ^a,b ,
Yang Jie ^a ,
Zhou Ling ^a ,
Wang Xinyue ^a ,
Yang Yin ^b ,
Li Jumei ^a,*,

a.
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
b.
Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China

jumeili2006@163.com

Received Date: 25 January 2019
Revised Date: 27 March 2019
Accepted Date: 9 April 2019
Available Online: 10 December 2019

Figures(4)

Herein, AgLi_1/3Sn_2/3O₂ with delafossite structure was prepared by treating the layered compound Li₂SnO₃ with molten AgNO₃ via ion exchange of Li⁺ for Ag⁺. The structure characterization and the electrochemical performance of AgLi_1/3Sn_2/3O₂ was thoroughly investigated. AgLi_1/3Sn_2/3O₂ is found to possess stacking lamellar morphology, which means small electrochemical impedance and so facilitates charge transfer kinetics during the cycling. Compared with Li₂SnO₃, due to the introducing of excellent electrical conductivity of silver, AgLi_1/3Sn_2/3O₂ exhibits improved electrochemical performance in terms of capacity, cycling stability and coulombic efficiency. The results show AgLi_1/3Sn_2/3O₂ presents favorable specific capacity of 339 mAh/g at current density of 200 mA/g after 50 cycles and initial coulombic efficiency of 96%. Ex situ XRD analysis revealed the reaction mechanism of AgLi_1/3Sn_2/3O₂ as an anode for lithium ion batteries.
- Lithium ion battery,
- AgLi_1/3Sn_2/3O₂,
- Delafossite structure,
- Charge transfer kinetics,
- Reaction mechanism
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沈阳化工大学材料科学与工程学院沈阳 110142

Enhanced electrochemical performance and mechanism study of AgLi1/3Sn2/3O2 for lithium storage

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通讯作者: 陈斌, bchen63@163.com

Enhanced electrochemical performance and mechanism study of AgLi_1/3Sn_2/3O₂ for lithium storage