title: A new cathode material for super-valent battery based on aluminium ion intercalation and deintercalation.
abstract: Due to their small footprint and flexible siting, rechargeable batteries are attractive for energy storage systems. A super-valent battery based on aluminium ion intercalation and deintercalation is proposed in this work with VO2 as cathode and high-purity Al foil as anode. First-principles calculations are also employed to theoretically investigate the crystal structure change and the insertion-extraction mechanism of Al ions in the super-valent battery. Long cycle life, low cost and good capacity are achieved in this battery system. At the current density of 50 mAg(-1), the discharge capacity remains 116 mAhg(-1) after 100 cycles. Comparing to monovalent Li-ion battery, the super-valent battery has the potential to deliver more charges and gain higher specific capacity.
authors.affiliation: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Jiang
authors.forename: Weiyi
authors.initials: W
authors.lastname: Xiong
authors.forename: He
authors.initials: H
authors.lastname: Sun
authors.forename: Zheshuai
authors.initials: Z
authors.lastname: Lin
authors.forename: Liwen
authors.initials: L
authors.lastname: Hu
authors.forename: Jiguo
authors.initials: J
authors.lastname: Tu
authors.forename: Jungang
authors.initials: J
authors.lastname: Hou
authors.forename: Hongmin
authors.initials: H
authors.lastname: Zhu
authors.forename: Shuqiang
authors.initials: S
authors.lastname: Jiao