title: Binder-free V2O5 cathode for greener rechargeable aluminum battery.
abstract: This letter reports on the investigation of a binder-free cathode material to be used in rechargeable aluminum batteries. This cathode is synthesized by directly depositing V2O5 on a Ni foam current collector. Rechargeable aluminum coin cells fabricated using the as-synthesized binder-free cathode delivered an initial discharge capacity of 239 mAh/g, which is much higher than that of batteries fabricated using a cathode composed of V2O5 nanowires and binder. An obvious discharge voltage plateau appeared at 0.6 V in the discharge curves of the Ni-V2O5 cathode, which is slightly higher than that of the V2O5 nanowire cathodes with common binders. This improvement is attributed to reduced electrochemical polarization.
authors.affiliation: Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and Environment, Beijing Institute of Technology , Beijing 100081, China.
authors.forename: Huali
authors.initials: H
authors.lastname: Wang
authors.forename: Ying
authors.initials: Y
authors.lastname: Bai
authors.forename: Shi
authors.initials: S
authors.lastname: Chen
authors.forename: Xiangyi
authors.initials: X
authors.lastname: Luo
authors.forename: Chuan
authors.initials: C
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Wu
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.forename: Khalil
authors.initials: K
authors.lastname: Amine
keywords: PTFE binder; PVDF binder; V2O5 cathode; aluminum battery; binder-free; ionic liquid electrolyte