Mason Graphite Inc., Laval, Quebec, Canada, (TSX.V: LLG; OTCQX: MGPHF) has announced that the Li-ion prototype cells containing Coated Spherical Purified Graphite (“CSPG”) made at pilot-scale with graphite sourced from its Lac Guéret deposit have reached the important testing milestone of 800 charge & discharge cycles while retaining 82.0% of their initial capacity.
Jean L’Heureux, Chief Operating Officer, commented: “While the lithium-ion battery applications are highly diversified, with each manufacturer having its own requirements in terms of battery cycle life and associated capacity retention, reaching 800 cycles with such retention is a decisive milestone, significantly de-risking our ultimate objective of reaching 1,000 cycles with 80% retention. This would rank the Lac Guéret graphite among one of the best performing anode materials currently available and pave the way for its commercialization in a variety of applications, including Electric Vehicles”.
Methodology
The batteries are tested at a rate of C/3, meaning 3 hours to charge and 3 hours to discharge, hence completing about 4 full cycles per day. The cathode used is of the NMC532 type. Tests are still going on with these batteries to evaluate the full life expectancy of the cells. The CSPG being tested was produced at pilot scale in the Company’s own equipment and in equipment at Corem facilities in Quebec City, Quebec. Tests are still ongoing with these batteries to evaluate the full life expectancy of the cells.
About Mason Graphite
Mason Graphite is a Canadian corporation dedicated to the production and transformation of natural graphite. Its strategy includes the development of value-added products, notably for green technologies like transport electrification. The Company also owns 100% of the rights to the Lac Guéret graphite deposit, one of the richest in the world. The Company is managed by an experienced team cumulating many decades of experience in graphite, covering production, sales, as well as research and development.
