@article{bbd2da342407430f9ef72ec3fc8004ec,
title = "An interfacial wetting water based hydrogel electrolyte for high-voltage flexible quasi solid-state supercapacitors",
abstract = "The development of eco-friendly and light-weighted solid-state electrolytes with a wide electrochemical window is critical to apply flexible energy storage devices for powering wearable and implantable electronics. Herein, we report the first demonstration of a quasi solid-state hydrogel electrolyte leveraging the formation of “interfacial wetting water” for facile two-dimensional ion transports instead of typical diffusion in bulk-like water. The hydrogel electrolyte exhibits a wide electrochemical window (2.5 V) in electrical double layer capacitance (EDLC) cell with an extremely effective low salt concentration (6.8 m), 3.1 times lower than the well-known water-in-salt electrolyte (WiSE, 21 m), and a small water retention (24 wt%). Besides, a significant toughness (ultimate tensile strength of 420 kPa and elongation of 6,000%) is achieved. The flexible supercapacitor demonstrates the high specific energy density of 39.1 Wh•kg−1 at 0.5 A•g−1 and 7.6 Wh•kg−1 at power density of 6218 W•kg−1, as well as a subdued self-discharge profile. This interfacial water dominated hydrogel electrolyte provides new directions in designing high-voltage hydrogel electrolyte for safe and sustainable soft energy storage devices.",
keywords = "High-voltage, Hydrogel electrolyte, Interfacial wetting water, Quasi solid-state, Zwitterionic polymer",
author = "Ta-Chung Liu and Sutaris Sutaris and Zhong, {Xin Yan} and Lin, {Wei Chen} and Chou, {Syun Hong} and Nindita Kirana and Huang, {Pei Yu} and Lo, {Yu Chieh} and Jeng-Kuei Chang and Pu-Wei Wu and Chen, {San Yuan}",
note = "Funding Information: Authors Ta-Chung Liu, Wei-Chen Lin, Syun-Hong Chou and San-Yuan Chen received funding from Ministry of Science and Technology of Taiwan (MOST) under Contract numbers of MOST 108-2221-E-009-035-MY3 . Author Pu-Wei Wu received funding from Ministry of Science and Technology of Taiwan (MOST) under Contract numbers of MOST 107-2221-E-009-006-MY3 and 108-2911-I-009-516 . Authors Sutarsis, Nindita Kirana and Jeng-Kuei Chang received funding from MOST 109-2221-E-009-052-MY3 . Authors Xin-Yan Zhong and Yu-Chieh Lo received funding from MOST 109-2634-F-009-029 and 108-2221-E-009-062 . The authors sincerely acknowledge the support of thermal analysis from the instrumentation center of National Taiwan University. The authors acknowledge the support of in-situ LC-TEM analysis from MA-tek. The authors appreciate the comments on the manuscript provided by Ryan Deblock and Bruce Dunn of UCLA. Funding Information: Authors Ta-Chung Liu, Wei-Chen Lin, Syun-Hong Chou and San-Yuan Chen received funding from Ministry of Science and Technology of Taiwan (MOST) under Contract numbers of MOST 108-2221-E-009-035-MY3. Author Pu-Wei Wu received funding from Ministry of Science and Technology of Taiwan (MOST) under Contract numbers of MOST 107-2221-E-009-006-MY3 and 108-2911-I-009-516. Authors Sutarsis, Nindita Kirana and Jeng-Kuei Chang received funding from MOST 109-2221-E-009-052-MY3. Authors Xin-Yan Zhong and Yu-Chieh Lo received funding from MOST 109-2634-F-009-029 and 108-2221-E-009-062. The authors sincerely acknowledge the support of thermal analysis from the instrumentation center of National Taiwan University. The authors acknowledge the support of in-situ LC-TEM analysis from MA-tek. The authors appreciate the comments on the manuscript provided by Ryan Deblock and Bruce Dunn of UCLA. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",
year = "2021",
month = jun,
doi = "10.1016/j.ensm.2021.03.028",
language = "American English",
volume = "38",
pages = "489--498",
journal = "Energy Storage Materials",
issn = "2405-8297",
publisher = "Elsevier BV",
}
