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- Title
Polymer-Templated Formation of Polydopamine-Coated SnO<sub>2</sub> Nanocrystals: Anodes for Cyclable Lithium-Ion Batteries.
- Authors
Jiang, Beibei; He, Yanjie; Li, Bo; Zhao, Shiqiang; Wang, Shun; He, Yan‐Bing; Lin, Zhiqun
- 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 SnO2 nanocrystals, composed of hundreds of PDA-coated 'corn-like' SnO2 nanoparticles (diameter ca. 5 nm) decorated along a 'cob', addressed the irreversibility issue of SnO2-based electrodes. The PDA-coated SnO2 were 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 SnO2 electrode with excellent rate capability, superior long-term stability over 300 cycles, and high Sn→SnO2 reversibility.
- Subjects
NANOCRYSTALS; ALKALI metals; ANODES; NANOPARTICLES; LITHIUM ions
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 7, p1895
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201611160