期刊
CHEMSUSCHEM
卷 13, 期 9, 页码 2443-2448出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201903175
关键词
electrochemistry; flexible devices; metal-free batteries; polymers; solid-state batteries
资金
- MEXT, Japan [17H03072, 18K19120, 18H05515, 19K15638]
- Research Institute for Science and Engineering, Waseda University
- Waseda University [2019 N-015]
Metal-free and totally organic based batteries were fabricated from functional polyethers. Aliphatic polyethers, in which 2,2,6,6-tetramethylpiperidin-1-oxyl and viologen were introduced with high density, were used as the cathode and anode active materials, respectively. By stacking nanosheets of the polymers and an imidazolium-substituted polyether as the electrolyte, a solid-state cell only 2 mu m thick was made. The anion-type rocking-chair cell showed reversible charge/discharge even at a high rate of 5 C without adding any solvents or plasticizers. Although the unsealed cell was measured under ambient conditions, no significant side reactions (including self-discharging and capacity decay) occurred, whereas conventional electrodes are sensitive to air and water in the charged state. The intrinsic plasticity of the polyethers is also compatible with making free-form, 3D-printable batteries.
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