title: Graphene as an Interfacial Layer for Improving Cycling Performance of Si Nanowires in Lithium-Ion Batteries.
abstract: Managing interfacial instability is crucial for enhancing cyclability in lithium-ion batteries (LIBs), yet little attention has been devoted to this issue until recently. Here, we introduce graphene as an interfacial layer between the current collector and the anode composed of Si nanowires (SiNWs) to improve the cycling capability of LIBs. The atomically thin graphene lessened the stress accumulated by volumetric mismatch and inhibited interfacial reactions that would accelerate the fatigue of Si anodes. By simply incorporating graphene at the interface, we demonstrated significantly enhanced cycling stability for SiNW-based LIB anodes, with retentions of more than 2400 mAh/g specific charge capacity over 200 cycles, 2.7 times that of SiNWs on a bare current collector.
authors.forename: Fan
authors.initials: F
authors.lastname: Xia
authors.forename: Sunsang
authors.initials: S
authors.lastname: Kwon
authors.forename: Won Woo
authors.initials: WW
authors.lastname: Lee
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Liu
authors.forename: Suhan
authors.initials: S
authors.lastname: Kim
authors.affiliation: School of Materials Science and Engineering, Yeungnam University , Gyeongsan 712-749, Korea.
authors.forename: Taeseup
authors.initials: T
authors.lastname: Song
authors.affiliation: School of Materials Science and Engineering, Ulsan National Institute of Science & Technology (UNIST) , Ulsan 689-798, Korea.
authors.forename: Kyoung Jin
authors.initials: KJ
authors.lastname: Choi
authors.forename: Ungyu
authors.initials: U
authors.lastname: Paik
authors.forename: Won Il
authors.initials: WI
authors.lastname: Park
keywords: Graphene; anode; interface; lithium ion batteries; nanowires; silicon