Test results for Canadian cathode powder maker Nano One have shown its high-voltage cobalt-free lithium-ion battery is stable at the elevated operating temperatures required for automotive, power tool and energy storage applications.
The results support ambient temperature results announced on 13 October, and further demonstrates the firm’s lithium nickel manganese (LNM) battery system.
LNM, also known as high voltage spinel (HVS), is a cobalt-free, low-cost cathode material that operates at 4.7 volts.
The firm’s battery— which pairs high-voltage LNM cathode with a conventional electrolyte and a graphite anode— achieved more than 500 fast cycles at 45°C and 1,000 fast charge and discharge cycles at 25°C.
The LNM cathode (LiNi0.5Mn1.5O4) was tested in a 20-layer pouch cell (4.75V 126mAh 0.592Wh) charging and discharging 12 times per day.
Dr. Stephen Campbell, CTO of Nano One Materials Corp, said the company’s proprietary LNM battery enables increased voltage, elevated operating temperatures and fast charging by eliminating failure from gassing in the first few cycles and failure from manganese contamination of the anode in the first 100 cycles.
He said: “Our LNM battery innovation breaks through the barriers that have hindered the commercialisation of LNM cathode materials in both conventional liquid and advanced solid-state batteries.”
Nano One’s patented One Pot process combines sulfate-free feedstocks with lithium carbonate, additives and coating materials in a single reaction to ultimately form coated single crystal cathode materials with enhanced durability.
Independent evaluations are being conducted within the automotive and battery supply chain.