title: Toward practical application of functional conductive polymer binder for a high-energy lithium-ion battery design.
abstract: Silicon alloys have the highest specific capacity when used as anode material for lithium-ion batteries; however, the drastic volume change inherent in their use causes formidable challenges toward achieving stable cycling performance. Large quantities of binders and conductive additives are typically necessary to maintain good cell performance. In this report, only 2% (by weight) functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for ∼500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from ∼48% to ∼90%. The combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell.
authors.affiliation: Environmental Energy Technologies Division and §Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Lu
authors.forename: Meng
authors.initials: M
authors.lastname: Jiang
authors.forename: Feifei
authors.initials: F
authors.lastname: Shi
authors.forename: Xiangyun
authors.initials: X
authors.lastname: Song
authors.forename: Ziyan
authors.initials: Z
authors.lastname: Zheng
authors.forename: Xin
authors.initials: X
authors.lastname: Zhou
authors.forename: Yanbao
authors.initials: Y
authors.lastname: Fu
authors.forename: Guerfi
authors.initials: G
authors.lastname: Abdelbast
authors.forename: Xingcheng
authors.initials: X
authors.lastname: Xiao
authors.forename: Zhi
authors.initials: Z
authors.lastname: Liu
authors.forename: Vincent S
authors.initials: VS
authors.lastname: Battaglia
authors.forename: Karim
authors.initials: K
authors.lastname: Zaghib
authors.forename: Gao
authors.initials: G
authors.lastname: Liu
keywords: conductive polymer binder; lithium ion battery; silicon monoxide; stabilized lithium metal powder (SLMP)