High Energy Density Silicon Anode Li-ion Batteries

New Amprius Battery Platform Released

Amprius’ lithium-ion cell will deliver an energy density of 500 Wh/kg, 1300 Wh/L, resulting in a longer run time at half the weight and volume of currently available cells By Abi Wylie / 23 Mar 2023
New Amprius Battery Platform Released
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Amprius Technologies, Inc. has received verification of its lithium-ion cell, which is to deliver an energy density of 500 Wh/kg, 1300 Wh/L, resulting in an increased run time.

The battery cell is approximately half the weight and volume of state-of-the-art, commercially available lithium-ion cells, and delivers impressive discharge times and performance. 

The battery platform significantly expands boundaries for customers and is a tailored solution for applications that require maximum discharge times without compromising key features such as aircraft payload, and without having to increase vehicle weight. 

The new batteries demonstrate both high gravimetric energy density (Wh/kg) and volumetric energy density (Wh/L) with exceptional adaptability. The customizable platform allows customers to select the option to either increase energy content in a battery pack without increasing weight, reduce weight in applications that target a fixed energy content, or combinations of both. Higher energy is important for longer run times, range and endurance, while lighter packs increase energy efficiency – even for the same battery energy content.

The 500 Wh/kg energy density performance was verified by Mobile Power Solutions, a leading testing house offering comprehensive battery regulatory compliance, safety, and performance testing. The results indicate that this cell model provides >504 Wh/kg and >1321 Wh/L at 25°C (77°F). 

Amprius is a leader in next-generation lithium-ion batteries with its Silicon Anode Platform, and its next-generation cells are well positioned to power products in the fast-growing aviation and, eventually, electric vehicles markets, estimated to be collectively over $100 billion in battery demand by 2025.

“These cells provide a run time of 200% compared to state-of-the-art graphite cells, while being lighter and smaller than other batteries with the same energy content,” said Jon Bornstein, President of Amprius Lab. “This latest validation continues Amprius’ track record of producing the world’s most powerful battery cells and sets an industry benchmark for next-generation battery technology that will ultimately revolutionize how high we fly, how far we travel and how long we can use our devices.”

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