title: A rationally designed composite of alternating strata of Si nanoparticles and graphene: a high-performance lithium-ion battery anode.
abstract: We have successfully fabricated a free-standing Si-re-G (reduced graphene) alternating stratum structure composite through a repeated process of filtering liquid exfoliated graphene oxide and uniformly dispersed Si solution, followed by the reduction of graphene oxide. The as-prepared free-standing flexible alternating stratum structure composite was directly evaluated as the anode for rechargeable lithium half-cells without adding any polymer binder, conductive additives or using current collectors. The half cells based on this new alternating structure composite exhibit an unexpected capacity of 1500 mA h g(-1) after 100 cycles at 1.35 A g(-1). Our rationally proposed strategy has incorporated the long cycle life of carbon and the high lithium-storage capacity of Si into one entity using the feasible and scalable vacuum filtration technique, rendering this new protocol as a readily applicable means of addressing the practical application challenges associated with the next generation of rechargeable lithium-ion batteries.
authors.affiliation: Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, Xiangtan University, Hunan 411105, PR China.
authors.forename: Fu
authors.initials: F
authors.lastname: Sun
authors.forename: Kai
authors.initials: K
authors.lastname: Huang
authors.forename: Xiang
authors.initials: X
authors.lastname: Qi
authors.forename: Tian
authors.initials: T
authors.lastname: Gao
authors.forename: Yuping
authors.initials: Y
authors.lastname: Liu
authors.forename: Xianghua
authors.initials: X
authors.lastname: Zou
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Wei
authors.forename: Jianxin
authors.initials: J
authors.lastname: Zhong
mesh_terms: D011211:Electric Power Supplies; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D012825:Silicon / Q000737:chemistry*
chemical_list: D007477:Ions; D010087:Oxides; D006108:Graphite; D008094:Lithium; D012825:Silicon