Ice as Solid Electrolyte To Conduct Various Kinds of Ions

Zeliang Guo, Tianshuai Wang, Hehe Wei, Yuanzheng Long, Cheng Yang, Dong Wang, Jialiang Lang, Kai Huang, Naveed Hussain, Chenxi Song, Bo Guan, Binghui Ge, Qianfan Zhang, Hui Wu

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

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+, Mg2+, Al3+, K+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, and Zn2+, frozen from corresponding sulphate solutions, exhibit ionic conductivities ranging from ≈10−7 S cm−1 (Zn2+) 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.

Original languageEnglish
Pages (from-to)12569-12573
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number36
DOIs
StatePublished - 2 Sep 2019
Externally publishedYes

Keywords

  • fast freezing
  • ice
  • low temperature
  • solid electrolyte

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