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Updated: Jan 20, 2026
11:04
Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.4K
Self-Formulated Na-Based Dual-Ion Battery Using Nonflammable SO2 -Based Inorganic Liquid Electrolyte
Ayoung Kim1, Hojae Jung1, Juhye Song1
1Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
Small (Weinheim an Der Bergstrasse, Germany)
|August 24, 2019
Summary
This study introduces a safe and affordable sodium dual-ion battery using a novel CuCl cathode and a nonflammable electrolyte. This system offers a promising alternative for next-generation rechargeable batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Sodium secondary batteries are explored as alternatives to lithium-ion batteries.
- Technical challenges hinder the widespread adoption of sodium-ion battery technology.
Purpose of the Study:
- To demonstrate a safe, cost-effective, and high-performance sodium-based dual-ion battery system.
- To investigate a novel self-formulated CuCl cathode and a nonflammable inorganic liquid electrolyte.
Main Methods:
- Fabrication of a sodium dual-ion battery using copper (Cu) and sodium chloride (NaCl) mixture for cathode material.
- Utilizing a nonflammable sodium aluminum tetrachloroaluminate·2sulfur dioxide (NaAlCl4·2SO2) inorganic liquid electrolyte.
- Employing a hard carbon anode for a sodium-metal-free configuration.
Main Results:
- Spontaneous formation of copper(I) chloride (CuCl) cathode material via redox coupling.
- Successful operation of the dual-ion battery utilizing Na+ and Cl- as charge carriers.
- Demonstration of a viable sodium-metal-free battery design.
Conclusions:
- The developed sodium dual-ion battery system exhibits high safety and cost-effectiveness.
- The use of inexpensive electrode materials and a stable electrolyte positions this technology as a promising next-generation energy storage solution.
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