Monday, 31 March 2025
Home Topics Transport Automotive Mercedes teams up with Factorial to develop solid-state batteries
AutomotiveBusinessElectric Vehicles (EVs)NewsTransport

Mercedes teams up with Factorial to develop solid-state batteries

125
FILE PHOTO: A logo of the Mercedes-Benz is seen outside a Mercedes-Benz car dealer in Brussels, Belgium March 13, 2023. REUTERS/Yves Herman/File Photo
A logo of the Mercedes-Benz is seen outside a car dealer in Brussels, Belgium March 13, 2023. The German company has teamed up with a US startup to develop solid-state EV batteries. REUTERS/Yves Herman/File Photo

LONDON – Mercedes-Benz and U.S. battery startup Factorial are working on a solid-state battery that should dramatically increase electric vehicle range and be ready for production by the end of the decade, the companies said on Tuesday.

The new battery, dubbed Solstice, should extend EV range about 80% above today’s average, with an energy density of 450 Watt-hours per kilogram, the companies said in a statement.

Solid-state batteries have been billed as a game-changing technology for EVs, as they should reduce fire risk and allow for lighter, lower-cost cars than can travel further on a single charge.

But they have proven harder than expected for major automakers and battery making partners to develop at scale.

On the road in 2026

Auto groups are urgently seeking ways to cut costs and boost EV range as sales have stagnated in Europe in particular.

Factorial has already developed a quasi-solid-state battery that automakers including Mercedes are testing and should be in EVs on the road in 2026.

Mercedes has invested in Factorial, which raised $200 million in 2022, alongside rivals Stellantis and Hyundai.

Factorial developed quasi-solid-state batteries first because they can use similar production lines to conventional lithium-ion batteries, meaning they can scale up faster, CEO Siyu Huang told Reuters.

In a solid-state battery, the liquid electrolyte through which the electrical charge passes should be replaced with a solid substitute, reducing fire risk and shrinking battery pack size.

Huang said that solid-state batteries would not require expensive, heavy cooling systems needed for today’s battery packs, allowing automakers to further reduce costs.

“We’re not just focused on the cost of (battery) cell, but the cost of the overall vehicle,” she said.

Smaller, cheaper, better

The challenges of developing solid-state batteries include poor performance in cold weather and the battery pack’s tendency to expand.

Mercedes Chief Technology Officer Markus Schaefer told Reuters that Factorial’s solid-state batteries could provide a 40% improvement in energy density over the German premium automaker’s high performance batteries today.

This would enable Mercedes to either significantly reduce EV battery pack size – batteries are an EV’s most expensive and heaviest component – or provide long-range electric cars for those who want them.

He added that lighter batteries would allow Mercedes to use steel for EV bodies instead of far more expensive and carbon intensive high-strength aluminium.

Mercedes is also working with Taiwanese battery maker ProLogium, in which it has invested, on solid-state batteries and is researching high-silicon anodes as an alternative solution to increase EV battery density.

“There are some challenges that you have to get under control, but … we have great engineering solutions to address them,” Schaefer said, adding that he believed Factorial’s goal of developing Solstice at scale by the end of the decade was realistic.

Related Articles

Lilium burnt through huge sums while trying to develop its jet (AFP)

German flying taxi start-up’s rescue deal collapses

A German flying taxi start-up said on Friday it would halt operations...

FILE PHOTO: U.S. Secretary of the Interior Doug Burgum speaks as he attends a signing ceremony with members of the West Virginia Congressional Delegation at the EPA headquarters in Washington, D.C., U.S., February 18, 2025. REUTERS/Kent Nishimura/File Photo

US energy council chief says power plants to produce 15% more electricity

By Valerie Volcovici WASHINGTON (Reuters) – U.S. Interior Secretary and co-chair of...

Cuba has inaugurated a new solar energy park in the capital Havana (AFP)

Cuba opens solar park hoping to stave off blackouts

Cuba on Friday unveiled a new solar energy park in the capital...

FILE PHOTO: Cranes unload imported iron ore from a cargo vessel at a port in Lianyungang, Jiangsu province, China October 27, 2019. REUTERS/Stringer/File Photo

Iron ore heads for weekly gain on brightening demand outlook, China stimulus hopes

By Amy Lv and Lewis Jackson BEIJING (Reuters) -Iron ore futures prices...

Login into your Account

Please login to like, dislike or bookmark this article.