Polymer-Templated Formation of Polydopamine-Coated SnO2Nanocrystals: Anodes for Cyclable Lithium-Ion Batteries

Beibei Jiang, Yanjie He, Bo Li, Shiqiang Zhao, Shun Wang, Yan Bing He, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

265 Scopus citations

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.

Original languageEnglish
Pages (from-to)1869-1872
Number of pages4
JournalAngewandte Chemie - International Edition
Volume56
Issue number7
DOIs
StatePublished - 6 Feb 2017

Bibliographical note

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • SnO
  • cyclability
  • lithium-ion batteries
  • nanostructures
  • solid-electrolyte interphase layer

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