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

Yongming Sun : Yongming Sun, Jeffrey Lopez, Hyun-Wook Lee, Nian Liu, Guangyuan Zheng, Chun-Lan Wu, Jie Sun, Wei Liu, Jong Won Chung, Zhenan Bao , and Yi Cui; Advanced Materials, 01/27/16.

Additional Authors: Yongming Sun, Jeffrey Lopez, Hyun-Wook Lee, Nian Liu, Guangyuan Zheng, Chun-Lan Wu, Jie Sun, Wei Liu, Jong Won Chung, Zhenan Bao , and Yi Cui

Abstract:

image

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.