Premium
Controlling SEI Formation on SnSb‐Porous Carbon Nanofibers for Improved Na Ion Storage
Author(s) -
Ji Liwen,
Gu Meng,
Shao Yuyan,
Li Xiaolin,
Engelhard Mark H.,
Arey Bruce W.,
Wang Wei,
Nie Zimin,
Xiao Jie,
Wang Chongmin,
Zhang JiGuang,
Liu Jun
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304962
Subject(s) - materials science , electrolyte , anode , chemical engineering , electrochemistry , carbon nanofiber , electrode , nanofiber , antimony , carbon fibers , tin , inorganic chemistry , porosity , nanotechnology , composite material , carbon nanotube , metallurgy , chemistry , composite number , engineering
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.