title: Controlling SEI formation on SnSb-porous carbon nanofibers for improved Na ion storage.
abstract: Porous carbon nanofiber (CNF)-supported tin-antimony (SnSb) alloys are synthesized and applied as a sodium-ion battery anode. The chemistry and morphology of the solid electrolyte interphase (SEI) film and its correlation with the electrode performance are studied. The addition of fluoroethylene carbonate (FEC) in the electrolyte significantly reduces electrolyte decomposition and creates a very thin and uniform SEI layer on the cycled electrode surface, which an promote the kinetics of Na-ion migration/transportation, leading to excellent electrochemical performance.
authors.affiliation: Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
authors.forename: Liwen
authors.initials: L
authors.lastname: Ji
authors.forename: Meng
authors.initials: M
authors.lastname: Gu
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Shao
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Li
authors.forename: Mark H
authors.initials: MH
authors.lastname: Engelhard
authors.forename: Bruce W
authors.initials: BW
authors.lastname: Arey
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Zimin
authors.initials: Z
authors.lastname: Nie
authors.forename: Jie
authors.initials: J
authors.lastname: Xiao
authors.forename: Chongmin
authors.initials: C
authors.lastname: Wang
authors.forename: Ji-Guang
authors.initials: JG
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
keywords: Na-ion battery; electrochemical performance; fluoroethylene carbonate (FEC); solid electrolyte interphase (SEI) layer