A significant development has been recorded in the testing of electric car batteries that could dramatically increase the range of an EV.
Donut Lab has reported impressive results for the high-temperature testing of its solid-state battery, in a move that could signal huge growth in the EV sector.
The solid-state battery cell was tested at 80C and 100C after being placed on an aluminium profile and a steel plate to apply light pressure.
The test involved charging the battery and increasing the temperature of the battery, before stabilising the temperature for two hours.
It proved that the Donut Battery performed even better under high temperature stress than previous tests.
The battery cell was able to utilise up to 110 per cent of its capacity with better efficiency than room temperature.
Researchers also discovered that battery continued to function "completely normally" after the test with no visible changes to the surface of the battery.
The 100C test saw the battery utilise around 107 per cent of its capacity, with normal functions when it was being recharged, despite the extreme temperature.
The new Donut Lab breakthrough could revolutionise the development of electric car batteries
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Ville Piippo, CTO at Donut Lab, said the testing proved that the battery was "exceptional not only in terms of performance, but also in terms of safety".
He continued, saying: "Traditional lithium-ion batteries are very sensitive to heat, and their upper operating temperature limit is typically around 60 to 70 degrees Celsius.
"High temperatures increase the risk of damage to battery cells and shorten their service life.
"High temperatures can also cause accelerated reactions inside the cell, and in the worst case, the risk of thermal runaway increases significantly."
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The Donut Lab's solid-state battery performed well at high temperatures
|DONUT LAB
Mr Piippo noted that the Donut Battery could avoid these issues since it doesn't contain flammable liquid electrolytes.
Donut solid-state batteries are already used in Verge Motorcycles, which benefits drivers with charging speeds of less than 10 minutes, and up to 60km of combined range per minute.
The long-range version of the battery could see riders travel 600km on one charge, with Verge making use of the first solid-state battery in motorcycling.
A Donut Lab battery lasts much longer compared to typical lithium-ion and high-end lithium-ion batteries
|DONUT LAB
Manufacturers have frequently touted the benefits of solid-state batteries as being the natural successor to lithium-ion batteries, with long ranges and rapid charging.
Toyota has been one of the most vocal automakers to support the uptake of solid-state batteries, promising to have a range of 745 miles and ultra-rapid charging speeds.
The Japanese manufacturer said it wanted to introduce solid-state batteries into its range of electric cars in the coming years.