British battery technology firm Integrals Power has disclosed new performance data on its lithium manganese iron phosphate (LMFP) cathode material, highlighting superior energy density over lithium iron phosphate (LFP) cells while remaining more cost-effective than nickel manganese cobalt (NMC) chemistry.
Integrals Power’s latest breakthrough involves increasing manganese content to 80%, enabling a 20% boost in energy density compared to LFP.
The company reports that its proprietary material technology and patented manufacturing process mitigate the typical decline in specific capacity associated with higher manganese levels. The LMFP cathode achieves a specific capacity of 150 mAh/g and operates at 4.1V, outperforming LFP’s 3.45V and NMC’s 3.7V.
To validate these claims, Integrals Power submitted its LMFP cathode material for testing to research firm QinetiQ. The material, integrated into pouch cells with commercial-grade graphite anodes and liquid electrolytes, demonstrated strong discharge performance and capacity retention. At a 5C charge rate, the material retained 92% of its original capacity, while at 2C, retention was 99%. Even at an extreme 10C charge rate, the retention remained at 60%.
See also: UK Startup Integrals Power Begins Shipment of LFP and LMFP Cathode Materials for EV Testing
Integrals Power asserts that its LMFP-based battery technology offers an optimal balance of high performance, extended range, and long lifespan. The company aims to position LMFP as a competitive alternative to LFP, providing higher energy density without the cost and critical mineral dependency of NMC cells.