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Adv Mater. 2016 Mar 23;28(12):2455-61. doi: 10.1002/adma.201504723. Epub 2016 Jan 27.

A Stretchable Graphitic Carbon/Si Anode Enabled by Conformal Coating of a Self-Healing Elastic Polymer.

Author information

1
Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
2
Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
3
Samsung Advanced Institute of Technology, Yeongtong-gu, Suwon-si, Gyeonggi-do, 443-803, South Korea.
4
Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.

Abstract

A high-capacity stretchable graphitic carbon/Si foam electrode is enabled by a conformal self-healing elastic polymer coating. The composite electrode exhibits high stretchability (up to 88%) and endures 1000 stretching-releasing cycles at 25% strain with detrimental resistance increase. Meanwhile, the electrode delivers a high reversible specific capacity of 719 mA g(-1) and good cycling stability with 81% capacity retention after 100 cycles.

KEYWORDS:

carbon/Si stretchable electrodes; conformal coating; cycling performance; electrode materials; self-healing elastic polymers

PMID:
26813780
DOI:
10.1002/adma.201504723

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