%0 Journal Article
%T Formation of physically durable and performance sensitive solid-electrolyte interphase of SiOx anode for lithium-ion battery
%A Dae In Lee
%A Hyeon-Woo Yang
%A Nayoung Kang
%A Sun-Jae Kim
%A Woo Seung Kang
%J Materials Research Letters
%D 2019
%R https://doi.org/10.1080/21663831.2018.1557754
%X ABSTRACT Although SiOx is a well-known promising anode material for Li-ion batteries because of its high energy density and cyclic stability, the inferior electron transport kinetics and morphologically unstable solid-electrolyte interphase (SEI) layer formed on the SiOx anode result in inadequate electrochemical performance. Herein, to overcome the poor electron transport kinetics, a carbon-incorporated/carbon-coated SiOx((C-SiOx)@C) composite is fabricated. In addition, the (C-SiOx)@C electrode is pre-lithiated using a charging circuit under an optimized resistance to form a structurally durable SEI layer with high Li+ diffusivity during the charge¨Cdischarge processes. Thus, the (C-SiOx)@C composite exhibits highly improved cycle performance. GRAPHICAL ABSTRACT IMPACT STATEMENT Elaborately designed SEI composed of LiF for physical sturdiness and Li2O to achieve high Li+ diffusivity resulted in highly improved cyclic performance as well as initial coulombic efficiency
%U https://www.tandfonline.com/doi/full/10.1080/21663831.2018.1557754