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Flexible Aqueous Lithium‐Ion Battery with High Safety and Large Volumetric Energy Density
Author(s) -
Dong Xiaoli,
Chen Long,
Su Xiuli,
Wang Yonggang,
Xia Yongyao
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201602766
Subject(s) - battery (electricity) , cathode , materials science , aqueous solution , anode , ion , lithium (medication) , fast ion conductor , flexibility (engineering) , optoelectronics , electrical engineering , electrolyte , chemistry , power (physics) , electrode , engineering , physics , medicine , statistics , mathematics , organic chemistry , quantum mechanics , endocrinology
A flexible and wearable aqueous lithium‐ion battery is introduced based on spinel Li 1.1 Mn 2 O 4 cathode and a carbon‐coated NASICON‐type LiTi 2 (PO 4 ) 3 anode (NASICON=sodium‐ion super ionic conductor). Energy densities of 63 Wh kg −1 or 124 mWh cm −3 and power densities of 3 275 W kg −1 or 11.1 W cm −3 can be obtained, which are seven times larger than the largest reported till now. The full cell can keep its capacity without significant loss under different bending states, which shows excellent flexibility. Furthermore, two such flexible cells in series with an operation voltage of 4 V can be compatible with current nonaqueous Li‐ion batteries. Therefore, such a flexible cell can potentially be put into practical applications for wearable electronics. In addition, a self‐chargeable unit is realized by integrating a single flexible aqueous Li‐ion battery with a commercial flexible solar cell, which may facilitate the long‐time outdoor operation of flexible and wearable electronic devices.