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Home> Articles>News>Switzerland Is Developing New Batteries — Cheap Li-Fes2 Battery Pack

Switzerland Is Developing New Batteries — Cheap Li-Fes2 Battery Pack

From:CTECHI GROUP Limited     Release time:2019-02-25

Overview:Lithium batteries have been widely used at present, but they have obvious shortcomings. First, the source of lithium-containing materials is limited. Second, the current use of flammable liquid electrolyte in lithium batteries is flammable and explosive, and the safety risk is high. With the support of the Swiss National Foundation for Scientific Research, the Swiss Federal Institute of Materials, the University of Geneva and the Paul Schell Institute have jointly launched a scientific research project since 2015 to try to develop batteries using sodium magnesium instead of lithium, and have achieved phased results.

Lithium batteries have been widely used at present, but they have obvious shortcomings. First, the source of lithium-containing materials is limited. Second, the current use of flammable liquid electrolyte in lithium batteries is flammable and explosive, and the safety risk is high. With the support of the Swiss National Foundation for Scientific Research, the Swiss Federal Institute of Materials, the University of Geneva and the Paul Schell Institute have jointly launched a scientific research project since 2015 to try to develop batteries using sodium magnesium instead of lithium, and have achieved phased results.


The research team proposed an all-solid-state battery design, which uses solid electrolyte instead of liquid electrolyte. The solid-state electrolyte is a compound containing sodium or magnesium ions with crystalline structure. Sodium and magnesium ions can move in it. The current is generated by the movement of positively charged ions between the electrodes of the battery.

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According to the experimental results, sodium ions can move in the solid electrolyte at room temperature (20 degrees Celsius), and the solid electrolyte will not burn, and still maintain chemical stability at 300 degrees Celsius, so the safety is greatly increased. Because of the wide range of sources of sodium, compared with lithium materials, it is almost infinite. Although the density of energy stored in batteries made of sodium is smaller than that of lithium batteries, it is possible to replace lithium batteries when the volume of energy storage unit is not high, so this result has important application value.


Solid electrolytes developed for magnesium materials also have good properties, in which magnesium ions can move at 70 degrees Celsius. Compared with some earlier studies, it takes 400 degrees Celsius to obtain the same conductivity. The researchers believe that significant progress has been made in the right direction, showing the potential and feasibility of further improvement. Considering that magnesium ion carries twice as much charge as lithium ion, has more sources of materials and better chemical stability, using magnesium instead of lithium as battery material has more attractive prospects.


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