Thursday, September 29, 2022
HomeDigit NewsScientists are closer to creating a fully "solid-state" battery

Scientists are closer to creating a fully “solid-state” battery

A promising new electrolyte for solid-state lithium-ion batteries won’t explode and is much more energy-hungry than liquid storage. Its combination of lithium, scandium, indium and chlorine is designed for stable and safe operation without loss of capacity for over a hundred cycles at high voltage (>4 Volts) and thousands of cycles at intermediate voltage.

Unlike classic sulfide-based solid-state analogues, the new one is based on chlorine, which avoids oxidation and subsequent decomposition of the material at a voltage of more than 2.5 Volts. This, in turn, eliminates the need for an insulating coating around the cathode, and therefore, to a lesser extent prevents the conduction of ions in it.

“Chloride electrolytes are becoming more attractive as they only oxidize at high voltage, and some of them are chemically compatible with the best cathodes we have. Several have been reported recently, but we have developed one with clear advantages,” said Linda Nazar, Distinguished Professor of Chemistry at the University of Waterloo, Canada and a longtime member of JCESR (Joint Center for Energy Storage Research).
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