title: 3D Networked Tin Oxide/Graphene Aerogel with a Hierarchically Porous Architecture for High-Rate Performance Sodium-Ion Batteries.
abstract: Low-cost and sustainable sodium-ion batteries are regarded as a promising technology for large-scale energy storage and conversion. The development of high-rate anode materials is highly desirable for sodium-ion batteries. The optimization of mass transport and electron transfer is crucial in the discovery of electrode materials with good high-rate performances. Herein, we report the synthesis of 3 D interconnected SnO2 /graphene aerogels with a hierarchically porous structure as anode materials for sodium-ion batteries. The unique 3 D architecture was prepared by a facile in situ process, during which cross-linked 3 D conductive graphene networks with macro-/meso-sized hierarchical pores were formed and SnO2 nanoparticles were dispersed uniformly on the graphene surface simultaneously. Such a 3 D functional architecture not only facilitates the electrode-electrolyte interaction but also provides an efficient electron pathway within the graphene networks. When applied as anode materials in sodium-ion batteries, the as-prepared SnO2 /graphene aerogel exhibited high reversible capacity, improved cycling performance compared to SnO2 , and promising high-rate capability.
authors.affiliation: Centre for Clean Energy Technology, University of Technology Sydney, Broadway, Sydney, NSW 2007 (Australia).
authors.forename: Xiuqiang
authors.initials: X
authors.lastname: Xie
authors.affiliation: Centre for Clean Energy Technology, University of Technology Sydney, Broadway, Sydney, NSW 2007 (Australia).
authors.forename: Shuangqiang
authors.initials: S
authors.lastname: Chen
authors.affiliation: Centre for Clean Energy Technology, University of Technology Sydney, Broadway, Sydney, NSW 2007 (Australia).
authors.forename: Bing
authors.initials: B
authors.lastname: Sun
authors.affiliation: School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002 (P.R. China).
authors.forename: Chengyin
authors.initials: C
authors.lastname: Wang
authors.affiliation: Centre for Clean Energy Technology, University of Technology Sydney, Broadway, Sydney, NSW 2007 (Australia). guoxiu.wang@uts.edu.au.|College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing (P.R. China). guoxiu.wang@uts.edu.au.
authors.forename: Guoxiu
authors.initials: G
authors.lastname: Wang
mesh_terms: D011211:Electric Power Supplies; D005782:Gels; D006108:Graphite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D016062:Porosity; D012964:Sodium / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D005782:Gels; D017971:Tin Compounds; D006108:Graphite; D012964:Sodium; C045358:stannic oxide
keywords: aerogels; energy conversion; graphene; sodium; tin