title: Three-Dimensional Graphene/Single-Walled Carbon Nanotube Aerogel Anchored with SnO2Nanoparticles for High Performance Lithium Storage.
abstract: A unique 3D graphene-single walled carbon nanotube (G-SWNT) aerogel anchored with SnO2nanoparticles (SnO2@G-SWCNT) is fabricated by the hydrothermal self-assembly process. The influences of mass ratio of SWCNT to graphene on structure and electrochemical properties of SnO2@G-SWCNT are investigated systematically. The SnO2@G-SWCNT composites show excellent electrochemical performance in Li-ion batteries; for instance, at a current density of 100 mA g-1, a specific capacity of 758 mAh g-1was obtained for the SnO2@G-SWCNT with 50% SWCNT in G-SWCNT and the Coulombic efficiency is close to 100% after 200 cycles; even at current density of 1 A g-1, it can still maintain a stable specific capacity of 537 mAh g-1after 300 cycles. It is believed that the 3D G-SWNT architecture provides a flexible conductive matrix for loading the SnO2, facilitating the electronic and ionic transportation and mitigating the volume variation of the SnO2during lithiation/delithiation. This work also provides a facile and reasonable strategy to solve the pulverization and agglomeration problem of other transition metal oxides as electrode materials.
authors.forename: Jing
authors.identifier: http://orcid.org/0000-0001-7229-7454
authors.initials: J
authors.lastname: Wang
authors.forename: Fang
authors.initials: F
authors.lastname: Fang
authors.affiliation: School of Materials Science and Engineering, University of Shanghai for Science & Technology , Shanghai 200093, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Yuan
authors.affiliation: School of Materials Science and Engineering, University of Shanghai for Science & Technology , Shanghai 200093, China.
authors.forename: Junhe
authors.initials: J
authors.lastname: Yang
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.forename: Chi
authors.initials: C
authors.lastname: Yao
authors.affiliation: School of Materials Science and Engineering, University of Shanghai for Science & Technology , Shanghai 200093, China.
authors.forename: Shiyou
authors.identifier: http://orcid.org/0000-0002-6614-9567
authors.initials: S
authors.lastname: Zheng
authors.forename: Dalin
authors.initials: D
authors.lastname: Sun
keywords: Li-ion battery; anode; carbon nanotube; graphene; tin oxide