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谭 靖,毛 健,张正权.导电Ti3O5包覆纳米铝粉的制备及其作为双离子电池负极材料的电化学性能研究[J].稀有金属材料与工程(英文),2020,49(6):1834~1839.[Tan Jing,Mao Jian and Zhang Zhengquan.Preparation of Nano-Al coated with the Conductive Ti3O5 shell and its Electrochemical Performance as Anode Materials of Dual-ion Batteries[J].Rare Metal Materials and Engineering,2020,49(6):1834~1839.]
Preparation of Nano-Al coated with the Conductive Ti3O5 shell and its Electrochemical Performance as Anode Materials of Dual-ion Batteries
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Received:March 28, 2019  Revised:May 31, 2019
DOI:
Key words: Aluminum anode material  core-shell structure  Ti3O5  Mesocarbon microbead  Dual-ion battery
Foundation item:四川省科技计划(2019YFG0072)
Author NameAffiliation
Tan Jing,Mao Jian and Zhang Zhengquan  
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Abstract:
      Aluminum is considered as one of the most promising anode materials for the next generation batteries, in this paper, we used conductive Ti3O5 shell coating nano-Al powder to prepare the core-shell structure material of Al@Ti3O5, and used it as an anode, accompanied by of MCMB as the cathode, to assemble the Al@Ti3O5-MCMB Dual-ion battery (DIB). The discharge platform of the Al@Ti3O5-MCMB DIB is up to 4.5V, and the discharge capacity can reach 130.6mAhg-1, specific energy density 278.8Whkg-1 at a current rate of 0.5C (the current rate is based on the theoretical specific capacity of graphite and 1C corresponding to 372 mAhg-1). The Al@Ti3O5-MCMB DIB shows excellent cyclic stability, and the capacity remains at around 110mAhg-1 in the process of circulating 1000 times under the current rate of 5C, with a capacity retention rate of 92.9% after circulation.