Volume 19, Issue 44 2302973
Research Article

Exploiting High-Voltage Stability of Dual-Ion Aqueous Electrolyte Reinforced by Incorporation of Fiberglass into Zwitterionic Hydrogel Electrolyte

Orynbay Zhanadilov

Orynbay Zhanadilov

Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006 South Korea

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Hee Jae Kim

Hee Jae Kim

Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006 South Korea

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Hou-Jen Lai

Hou-Jen Lai

Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106 Taiwan

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Jyh-Chiang Jiang

Jyh-Chiang Jiang

Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106 Taiwan

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Aishuak Konarov

Aishuak Konarov

Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000 Kazakhstan

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Almagul Mentbayeva

Almagul Mentbayeva

Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000 Kazakhstan

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Zhumabay Bakenov

Zhumabay Bakenov

Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000 Kazakhstan

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Kee-Sun Sohn

Kee-Sun Sohn

Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006 South Korea

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Payam Kaghazchi

Corresponding Author

Payam Kaghazchi

Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), 52425 Jülich, Germany

E-mail: [email protected]; [email protected]

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Seung-Taek Myung

Corresponding Author

Seung-Taek Myung

Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006 South Korea

E-mail: [email protected]; [email protected]

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First published: 28 June 2023
Citations: 17

Abstract

Rechargeable zinc aqueous batteries are key alternatives for replacing toxic, flammable, and expensive lithium-ion batteries in grid energy storage systems. However, these systems possess critical weaknesses, including the short electrochemical stability window of water and intrinsic fast zinc dendrite growth. Hydrogel electrolytes provide a possible solution, especially cross-linked zwitterionic polymers that possess strong water retention ability and high ionic conductivity. Herein, an in situ prepared fiberglass-incorporated dual-ion zwitterionic hydrogel electrolyte with an ionic conductivity of 24.32 mS cm−1, electrochemical stability window up to 2.56 V, and high thermal stability is presented. By incorporating this hydrogel electrolyte of zinc and lithium triflate salts, a zinc//LiMn0.6Fe0.4PO4 pouch cell delivers a reversible capacity of 130 mAh g−1 in the range of 1.0–2.2 V at 0.1C, and the test at 2C provides an initial capacity of 82.4 mAh g−1 with 71.8% capacity retention after 1000 cycles with a coulombic efficiency of 97%. Additionally, the pouch cell is fire resistant and remains safe after cutting and piercing.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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