The new battery offers 25% more range than its lithium-ion counterpart
February 24, 2025 at 3:21 PM
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- Mercedes began to test an EQS equipped with a solid battery.
- It provides 25% more range than a lithium-ion battery of the same size and the same weight.
- Batteries in the solid state offer higher energy densities and safety benefits compared to traditional batteries.
Batteries in the solid state are often presented as a Saint Grail for electric vehicles because they promise to be safer and have higher energy densities than their lithium-ion counterparts. However, they were largely limited to the laboratory.
It starts to change while Mercedes started to test on the road a “slightly modified” equation with a battery in a solid lithium-metal state. It uses factorial energy cells and has a floating cell carrier.
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As the company explained, “when the battery takes care, the materials develop and when it discharges, it contracts.” To support this, the battery has “pneumatic actuators which interact with the change in cellular volume during load and discharge, which affects the performance and life of the battery”.
Mercedes said that the battery uses a solid electrolyte instead of a liquid, which improves cell safety and allows you to use new anodes such as metal lithium. This has the potential to increase the gravimetric energy density of the EV batteries up to 450 Wh / kg. This should open the track to lighter and more compact batteries.
In the case of equations, the battery allows a range of up to 621 miles (1,000 km), 25% more than a lithium-ion battery of the same size and weight. In particular, a regular EQS of 450+ with a 118 kWh battery has a beach greater than 497 miles (800 km) under the test of light vehicles in the world.
The prototype will be subject to an assortment of tests in the coming months and the CEO of Factorial Energy, Siyu Huang, said: “To be the first to successfully integrate batteries into the solid state of lithium metal in a platform of Production vehicle marks a historic realization of electric mobility. This breakthrough shows that the technology of semiconductor batteries has exceeded the laboratory and in the application of the real world, creating a new reference for the entire automotive industry. »»
His feelings have been taken over by Mercedes technology director Markus Schäfer, who said that “the development of a solid state battery underlines our commitment to innovation and sustainability”.
