title: Rhombohedral prussian white as cathode for rechargeable sodium-ion batteries.
abstract: A novel air-stable sodium iron hexacyanoferrate (R-Na1.92Fe[Fe(CN)6]) with rhombohedral structure is demonstrated to be a scalable, low-cost cathode material for sodium-ion batteries exhibiting high capacity, long cycle life, and good rate capability. The cycling mechanism of the iron redox is clarified and understood through synchrotron-based soft X-ray absorption spectroscopy, which also reveals the correlation between the physical properties and the cell performance of this novel material. More importantly, successful preparation of a dehydrated iron hexacyanoferrate with high sodium-ion concentration enables the fabrication of a discharged sodium-ion battery with a non-sodium metal anode, and the manufacturing feasibility of low cost sodium-ion batteries with existing lithium-ion battery infrastructures has been tested.
authors.affiliation: Sharp Laboratories of America , Camas, Washington 98607, United States.
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Song
authors.forename: Ruimin
authors.initials: R
authors.lastname: Qiao
authors.forename: L Andrew
authors.initials: LA
authors.lastname: Wray
authors.forename: Muhammed A
authors.initials: MA
authors.lastname: Hossain
authors.forename: Yi-De
authors.initials: YD
authors.lastname: Chuang
authors.forename: Wanli
authors.initials: W
authors.lastname: Yang
authors.forename: Yuhao
authors.initials: Y
authors.lastname: Lu
authors.forename: David
authors.initials: D
authors.lastname: Evans
authors.forename: Jong-Jan
authors.initials: JJ
authors.lastname: Lee
authors.forename: Sean
authors.initials: S
authors.lastname: Vail
authors.forename: Xin
authors.initials: X
authors.lastname: Zhao
authors.forename: Motoaki
authors.initials: M
authors.lastname: Nishijima
authors.forename: Seizoh
authors.initials: S
authors.lastname: Kakimoto
authors.forename: John B
authors.initials: JB
authors.lastname: Goodenough