Ice as Solid Electrolyte To Conduct Various Kinds of Ions. Issue 36 (2nd August 2019)

• Record Type: Journal Article
• Authors: Guo, Zeliang; Wang, Tianshuai; Wei, Hehe; Long, Yuanzheng; Yang, Cheng; Wang, Dong; Lang, Jialiang; Huang, Kai; Hussain, Naveed; Song, Chenxi; Guan, Bo; Ge, Binghui; Zhang, Qianfan; Wu, Hui
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 36(2019)
• Page Start: 12569
• Page End: 12573
• Publication Date: 2019-08-02
• Subjects: fast freezing -- ice -- low temperature -- solid electrolyte; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201907832
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Water, considered as a universal solvent to dissolve salts, has been extensively studied as liquid electrolyte in electrochemical devices. The water/ice phase transition at around 0 °C presents a common phenomenon in nature, however, the chemical and electrochemical behaviors of ice have rarely been studied. Herein, we discovered that the ice phase provides efficient ionic transport channels and therefore can be applied as generalized solid‐state ionic conductor. Solid state ionic conducting ices (ICIs) of Li +, Na +, Mg 2+, Al 3+, K +, Mn 2+, Fe 2+, Co 2+, Ni 2+, Cu 2+, and Zn 2+, frozen from corresponding sulphate solutions, exhibit ionic conductivities ranging from ≈10 −7 S cm −1 (Zn 2+ ) to ≈10 −3 S cm −1 (Li + ) at temperatures spanning from −20 °C to −5 °C. The discovery of ICIs opens new insight to design and fabrication of solid‐state electrolytes that are simple, inexpensive, and versatile. Abstract : The ice phase provides efficient ion transport channels and can be applied as a generalized solid‐state ionic conductor. Solid‐state ionic conducting ices (ICIs) of Li +, Na +, Mg 2+, Al 3+, K +, Mn 2+, Fe 2+, Co 2+, Ni 2+, Cu 2+, and Zn 2+, exhibit ionic conductivities of ≈10 −3 S cm −1 (Li +, highest). That way solid‐state electrolytes that are simple, inexpensive, and versatile can be designed and fabricated.