title: Polymer-Templated Formation of Polydopamine-Coated SnO2Nanocrystals: Anodes for Cyclable Lithium-Ion Batteries.
abstract: Well-controlled nanostructures and a high fraction of Sn/Li2O interface are critical to enhance the coulombic efficiency and cyclic performance of SnO2-based electrodes for lithium-ion batteries (LIBs). Polydopamine (PDA)-coated SnO2nanocrystals, composed of hundreds of PDA-coated "corn-like" SnO2nanoparticles (diameter ca. 5 nm) decorated along a "cob", addressed the irreversibility issue of SnO2-based electrodes. The PDA-coated SnO2were crafted by capitalizing on rationally designed bottlebrush-like hydroxypropyl cellulose-graft-poly (acrylic acid) (HPC-g-PAA) as a template and was coated with PDA to construct a passivating solid-electrolyte interphase (SEI) layer. In combination, the corn-like nanostructure and the protective PDA coating contributed to a PDA-coated SnO2electrode with excellent rate capability, superior long-term stability over 300 cycles, and high Sn→SnO2reversibility.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Beibei
authors.initials: B
authors.lastname: Jiang
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Yanjie
authors.initials: Y
authors.lastname: He
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Shiqiang
authors.initials: S
authors.lastname: Zhao
authors.affiliation: College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P.R. China.
authors.forename: Shun
authors.initials: S
authors.lastname: Wang
authors.affiliation: Engineering Laboratory for the Next Generation Power and Energy Storage Batteries, Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong, 518055, P.R. China.
authors.forename: Yan-Bing
authors.initials: YB
authors.lastname: He
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Zhiqun
authors.initials: Z
authors.lastname: Lin
keywords: SnO2; cyclability; lithium-ion batteries; nanostructures; solid-electrolyte interphase layer