A new tavorite LiTiPO4F electrode material for aqueous rechargeable lithium ion battery

被引:11
作者
Rangaswamy, Puttaswamy [1 ,2 ]
Suresh, Gurukar Shivappa [1 ,2 ]
Kittappa, Mahadevan Malavalli [3 ]
机构
[1] NMKRV Coll Women, Dept Chem, 3 Block, Bangalore 560011, Karnataka, India
[2] NMKRV Coll Women, Res Ctr, 3 Block, Bangalore 560011, Karnataka, India
[3] Kuvempu Univ, PG Ctr, Kadur 577548, Karnataka, India
关键词
LiTiPO4F; RAPET; Aqueous electrolyte; Cyclic voltammetry; Galvanostatic charge/discharge; Electrochemical impedance spectroscopy; Potentiostatic intermittent titration techniques; Galvanostatic intermittent titration technique; POTENTIOSTATIC INTERMITTENT TITRATION; CHEMICAL DIFFUSION-COEFFICIENTS; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; ANODE MATERIAL; LI; INTERCALATION; BEHAVIOR; INSERTION; KINETICS;
D O I
10.1007/s10008-016-3240-5
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Herein, we demonstrate a safe, inexpensive, and stable cycle-life aqueous rechargeable Li-ion battery system using tavorite LiTiPO4F as anode and Li[Li0.2Co0.3Mn0.5]O-2 as cathode in aqueous electrolyte using 2 M Li2SO4. These materials have been synthesized via a simple and an efficient method called RAPET (reaction under autogenic pressure at elevated temperature) method, and for the first time, we have evaluated the electrochemical properties of LiTiPO4F in aqueous electrolyte. Structural and morphological features have been characterized using X-ray diffraction and scanning electron microscopy techniques, and the electrochemical studies have been investigated by using cyclic voltammetry, galvanostatic charge/discharge studies, electrochemical impedance spectroscopic technique, potentiostatic intermittent titration techniques, and galvanostatic intermittent titration techniques. In galvanostatic charge/discharge studies, the capacity, cycle life, and columbic efficiency of LiTiPO4F have been tested in combination with Li [Li0.2Co0.3Mn0.5]O-2 cathode. In particular, LiTiPO4F shows capacity of 82 mA h g(-1), the capacity retention was maintained 90 % even after the 45th cycle.
引用
收藏
页码:2619 / 2631
页数:13
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