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Published on: November 10, 2014
A flexible self-healing Zn3V2O7(OH)2·2H2O-based Zn-ion battery under continuous folding and twisting
Yajun Zhu1, Xirong Lin2, Xin Jin3
1Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, P. R. China. jyliu@iim.ac.cn.
Abstract:
Engineering flexible and self-healing batteries is significant for wearable electronics. Here, we develop a flexible self-healing Zn-ion battery with a Zn3V2O7(OH)2·2H2O cathode working with a polyvinyl alcohol hydrogel electrolyte. The battery achieves a high capacity and robust structure during switching and self-healing, and keeps a stable potential after cutting/healing several times. After being bent at 30°, 60°, 90°, 120° and 150°, the capacities remain stable, and the battery delivers 78.6 mA h g-1 when repeatedly folding at 90°, displaying the potential for various applications such as foldable cell phones.
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