GMG's "G-Cell" Batteries: No performance loss in cycle testing

GMG's "G-Cell" Batteries: No performance loss in cycle testing **Bob Galyen**, GMG Director and former Chief Technology Officer of CATL, commented: "The cycling stability we are seeing from these **G®CELLS** is genuinely exceptional. Sustaining zero measurable capacity fade past 489 cycles under a full 10C charge and 10C discharge regime, each cycle completed in six minutes, is a result that stands in stark contrast to the LTO benchmark cell, which is regarded as one of the most robust fast-charging chemistries on the market today and still degraded to end-of-life within 64 cycles under the same profile. The very low internal resistance of around 5 mOhms, and the resulting 4 degree temperature rise above ambient, tells me GMG's material science is translating into real, measurable cell-level performance rather than just laboratory promise. Having built and scaled battery manufacturing for the world's largest lithium-ion producer, I know how rare it is to see this combination of fast-charge durability and thermal control this early in a cell's development. There is clear further work ahead on some of the energy density optimisation and further scaling of the cell size, but the fundamentals being demonstrated here are the right ones to be solving first." Performance loss in testing not measurable. Null charge to full in 6 minutes each time. Most batteries can only cycle down to 20% and up to 80% resulting in only utilization of 60% of the battery capacity. Energy density of battery used in testing was 50wh/kg, Handcrafted cells from BIC Indiana. Competitor batteries that were tested against failed in just 64 cycles in similarly stressful conditions, while the headliner batteries passed 489 cycles with no degradation. In prior interviews, and in step with Bob Galyen, they will be retrofitting a standard lithium battery plant to produce these Graphene cells, which the machine automation is expected to also improve energy density significantly. Cost is very competitive, base materials abundant due to the nature of it being made with Natural gas and aluminum feedstocks. Little to no fire risk..