EV battery tops record 1000Wh/l energy

EV battery tops record 1000Wh/l energy

Technology News |
By Nick Flaherty

BMW is planning to use a battery technology with a record energy density of 1007Wh/l to boost the range of its electric vehicles and slash the cost at the same time.

Our Next Energy (ONE) in Michigan is a portfolio company of BMW and has developed a 240Ah prismatic anode-free lithium metal cell with the highest energy density large-format cell so far produced. The leading silicon cells have an energy density of 800Wh/l, while QuantumScape is also developing a high energy density anode-free solid state battery cell.

The technology developed by ONE will enable the commercialization of ONE’s Gemini dual-chemistry architecture, which will be integrated into a BMW iX prototype vehicle later this year with a proprietary DC-DC converter that supports the anode-free cell and lithium iron phosphate (LFP) cells.

This first generation of cell eliminates the need for graphite and anode manufacturing equipment, enabling $50 per kWh cell cost at scale.

“Our prismatic anode-free cell is produced with approximately half of current cell manufacturing equipment for equivalent capacity, allowing us to sharply reduce scale-up cost,” said Mujeeb Ijaz, founder and CEO of ONE.

Anode-free cells typically have low cycle life compared to conventional cells, which has been a problem for automotive designs. The Gemini dual-chemistry architecture pairs lower energy, longer life LFP cells with the anode-free cell into one battery pack. This supports LFP for daily driving with the anode-free cell used to extend range for long distances. This combined system is expected to deliver more than 250,000 miles of lifetime service. 

“Scaling 100x from a 2 Ah pouch cell to a 240 Ah prismatic in less than 12 months is a testament to the simplicity of the design and ability to use conventional Li-ion production equipment,” said Steven Kaye, ONE Chief Technical Officer. “We are moving faster than the fastest research programs that I have been a part of. Gemini will reach volume production in 2026 accelerating electric vehicle adoption by delivering 600 miles of range in a wide range of vehicle platforms, including trucks and SVUs.”

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