Iron-ion battery using pure ionic liquid electrolyte: A low cost, highly safe and environmentally friendly rechargeable battery
Yansong ZHAO1, Yuli KOU1,2, Yuchao LI1,3
1Department of Safety, Chemistry and Biomedical Laboratory Sciences, Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, Norway
2Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, China
3School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, China
Iron-ion battery using pure ionic liquid electrolyte: A low cost, highly safe and environmentally friendly rechargeable battery
Yansong Zhao1,* Yuli Kou 1, 2, Yuchao Li 1, 3*
1 Department of Safety, Chemistry and Biomedical Laboratory Sciences, Faculty of Engineering and Science, Western Norway University of Applied Sciences (HVL), 5063 Bergen, Norway
2 Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, 830046 Urumqi, China
3 School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, China
*Corresponding author: Yansong Zhao (yansong.zhao@hvl.no) and Yuchao Li (cyulee@126.com)
Presenting author: Yansong Zhao (yansong.zhao@hvl.no)
Lithium-ion (Li) based batteries are important energy storage devices nowadays However, Li-ion based batteries have several disadvantages, for example, high cost of raw materials, safety issues, and limited Li resources in the earth. The safety issues of Li-ion based batteries are mainly related to fire and explosion risks since the battery is highly active and sensitive to water and oxygen. Organic solvents in Li-ion batteries are flammable and there have been several incidents with exploding Li-ion based batteries reported in the past. Another significant challenge of current battery technology is the utilization of toxic materials in cathode material and electrolytes in batteries fabrication, which can be harmful to the environment and living beings when improperly disposed. Thus, the utilization of non-toxic electrolytes and cathode materials in batteries is a pivotal step towards a more environmentally friendly storage of energy.
Ionic liquids (ILs) have many advantageous properties and have been utilized in many fields, including renewable energy, energy storage, CO2 capture, oil & gas process, medicine science, catalysis science, biotechnology, and nanoscience. Our laboratory focuses on utilization of ILs for sustainable energy technology development. In this conference, we will present the important experimental results that we have obtained in our laboratory relevant to iron-ion battery (Fe-ion battery) using ILs based electrolyte. Fe-ion battery is a low cost, highly safe and environmentally friendly battery.
ILs electrolyte we utilized for Fe-ion battery fabrication is a safe, low cost, high thermal stability, and high electrochemical performance electrolyte. The chemical structure of ILs electrolytes is investigated using Raman analysis. In addition, physical and thermal properties of ILs electrolytes, including density, viscosity, melting point and decomposition temperature, are investigated using density meter, viscosity meter, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Moreover, electrochemical properties, including electrochemical windows, and ionic conductivity of ILs electrolytes are investigated using electrochemical instrument and conductivity meter. It is found that some ILs obtained in our laboratory have excellent physical and electrochemical properties to utilize as electrolytes for Fe-ion battery fabrication. Finally, full Fe-ion cells are obtained in our laboratory. Electrochemical properties of full Fe-ion cells are investigated, including cyclic voltammetry curves, and specific charge-discharge capacity.
References
(1) Y. Zhao et al. Rechargeable iron-ion battery using a pure ionic liquid electrolyte. ACS Omega, 2022, 7, 28, 24082-24090.
(2) Y. Zhao et al. Rechargeable iron-ion battery. Patent application No. in Norway: 20180939.