ONE Aries II LFP Battery Nearly Hits Power Density Parity With NCM

Michigan-based vitality storage know-how startup Our Subsequent Power (ONE) has introduced vary and mass breakthroughs with its Aries II lithium iron phosphate (LFP) battery pack.

The corporate claims that its battery has closed the hole in vary and mass to inside six p.c of the main benchmark nickel cobalt manganese (NCM) pack usually utilized in electrical passenger autos.

Attaining close to vitality density parity with NCM is a major milestone for an LFP battery. At the moment, most EVs bought within the US use NCM batteries because of the larger vitality density at a cell stage in comparison with LFP. In consequence, NCM is most well-liked by automakers in long-range electrical autos.

However ONE’s Aries II battery could change that because it has key benefits. It prices 25 p.c lower than a comparable NCM battery because it would not want nickel and cobalt; it additionally reduces the danger of thermal runaway by avoiding self-oxidation when a cell is crushed or shorted.

“LFP batteries have many benefits over NCM batteries, together with value and sturdiness, whereas utilizing safer and extra considerable supplies. The important thing shortfall has been vary and vitality density. By engineering a battery pack with comparable vitality density to NCM, ONE has made LFP a sustainable different,” stated Mujeeb Ijaz, CEO and founding father of ONE.

Because the firm was based in July 2020, ONE has devoted its efforts to closing the vitality density hole with NCM. The corporate has not solely closed the hole however achieved a 20-30 p.c vitality density improve over typical LFP battery programs. With an vitality density of 263 Wh/L and 162 Wh/kg, Aries II has achieved 34 p.c and 23 p.c enhancements over the main LFP pack benchmark. 

“When the crew took on the problem of reaching vitality parity with NCM batteries, we checked out every part from bettering cell chemistry to redesigning the within of the pack,” stated Chris Hughes, chief battery engineer at ONE. “Finally, it was the sturdiness and security of LFP that led to our novel pack and cell design that boosted Aries II’s vitality density.”

ONE’s engineering crew additionally made progress in lowering the burden of the general pack design. By utilizing extra considerable and lower-cost uncooked supplies within the cell, ONE was ready to make use of extra superior supplies on the pack stage, lowering general weight. The mixture of elevated vitality density and lightweighting permits the Aries II battery to supply greater than 350 miles of vary to a typical passenger electrical car.

It is also value noting that an LFP battery has a extra considerable provide chain seeing because the earth’s crust consists of 5 p.c iron, whereas nickel and cobalt make up lower than 0.1 p.c.

ONE expects its Aries II batteries to be absolutely compliant with Inflation Discount Act (IRA) necessities when manufacturing begins in late 2024 at ONE Circle in Van Buren Township, Michigan.


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