Battery Breakthrough

Revolutionary Battery Innovation by GM and LG

General Motors (GM) and LG Energy Solution have announced a significant leap forward in battery technology. They plan to commercialize lithium manganese-rich (LMR) prismatic battery cells for GM’s future electric trucks and full-size SUVs. This innovative battery offers a 33% higher energy density compared to existing lithium iron phosphate (LFP) models, all while keeping costs on par. Kurt Kelty, GM’s VP of battery, propulsion, and sustainability, highlighted that these new cells are primarily aimed at enhancing GM’s electric truck lineup, offering over 400 miles of range, which matches the top range provided by current high-nickel batteries.

Full-scale production of these LMR prismatic cells is slated to start at an LG Energy Solution facility by late 2027, with plans for GM to be the first automaker to feature this technology in their EVs starting 2028. This shift not only promises to reduce production and consumer costs but also emphasizes goals for responsible material sourcing from North America, bolstering domestic battery production.

Years in the Making

GM has been exploring manganese-rich lithium-ion battery cells since 2015, with research spearheaded at the Wallace Battery Cell Innovation Center in Warren, Michigan. The journey involved overcoming substantial challenges tied to performance and durability, such as reducing cobalt dependency and addressing issues like energy density deficiencies and structural stability during charge cycles. This thorough development included testing 18 cell variations across 1.4 million miles, according to TechSpot.

LG Energy Solution, itself an offshoot of the established LG Chem, holds over 200 patents related to this field, with its pioneering LMR technology patent dating back to 2010. The company aims for carbon neutrality by 2050 and is eager to launch the first-ever LMR prismatic cells, marking the fulfillment of years of investment and innovation.

Driving Experience

Switching to LMR technology presents a novel driving experience with substantial practical benefits. The prismatic cell structure is distinct from the pouch design found in GM’s current high-nickel battery packs, which enhances efficiency in packaging particularly for large trucks and SUVs. Reducing parts and packaging can drive down costs, with new tech potentially benefitting vehicles like the Chevrolet Silverado EV LT Extended Range, which costs upwards of $75,195.

By almost eliminating cobalt usage—a significant cost in NMCA batteries—this new battery setup ensures fewer environmental repercussions and more affordability for buyers. The switch to prismatic LMR cells is anticipated to offer a smoother driving experience, comparable to the top electric vehicles today, but with the added benefit of extended range and lower long-term costs. As GM and LG push forward with these advancements, expect the driving dynamics of these electric trucks to become a benchmark for efficiency and wholesomeness in the market.