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Current issue

ELEKTRO 11/2019 was released on November 6th 2019. Its digital version will be available on December 2nd 2019.

Topic: Electrical switchboards and switchboards technologies; substations

Main Article
The cause of mechanic vibration of synchronous mining engines by Palašer and its removal

SVĚTLO (Light) 5/2019 was released on September 16th 2019. Its digital version will be available immediately.

Professional organizations activities
International conference LIGHT (SVĚTLO) 2019 – 6th announcement
We participated in International commission on illumination CIE 2019 congress in Washington
Technical colloquium SLOVALUX 2019

Fairs and exhibitions
Inspire with boho styl and design of Far East at autumn fair FOR INTERIOR

Batteries with fluorinated electrolytes that work at very high and low temperatures

30.10.2019 | Tech Xplore | www.techxplore.com

Electrolytes are chemical components that enable the flow of ions between the cathode and anode inside batteries, ultimately providing electrical power to technological devices. Most conventional and readily available non-aqueous Li-ion batteries are fabricated using carbonate-based electrolytes.

Despite their widespread use, the highly flammable carbonate electrolytes greatly limit the temperatures at which a battery can operate correctly due to their high affinity between their chemical solvents and the ions inside batteries. This results in most carbonate electrolytes-based batteries only functioning safely between -20°C and +50°C, or at voltages between 0.0 and 4.3V.

New type of battery

With this in mind, a team of researchers led by professor Chunsheng Wang at the University of Maryland in the US and other scientists at Zhejiang University in China have recently fabricated a new type of battery that can work at a broader range of temperatures, using fluorinated electrolytes with non-polar solvents. These fluorinated electrolytes are non-flammable, enabling a high electrochemical stability within a broader range temperatures and voltages than carbonate electrolytes.

Read more at Tech Xplore

Image Credit: University of Maryland

-jk-