Re: Impurites - Geez La Weeze-Borne
in response to
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posted on
Feb 12, 2015 05:47PM
Hydrothermal Graphite Deposit Ammenable for Commercial Graphene Applications
Do you think Tesla and Panasonic are licking their lips now? And maybe a few more companies that ZEN have NDA's with? Not only can they produce graphite to serve the LIB segment, but at a very low cost.
Dr. Bharat Chahar, VP of Market Development for Zenyatta stated, “Since the purity and particle size of the material provided by SGS processing was already in the range needed for LIB application, no further milling or purification was needed. Compared to natural flake graphite supplied to the industry from China, no extra treatment and no dangerous hydrofluoric acid purification process were required to generate our material. No extensive milling was needed to prepare the Zenyatta graphite with minor loss of material occurring during the shaping process.” - See more at: http://www.netnewsledger.com/2015/02/12/zenyatta-sees-albany-project-graphite-for-lithium-ion-batteries/#sthash.KYfYplo2.dpuf
Graphite is used as a host material in the anode to hold active lithium-ions which move in and out of the graphite layers during charging and discharging. Both natural and synthetic graphite can be used in battery applications depending on the manufacturer’s needs. Generally the choice comes down to cost, purity and various other critical specifications. Purity levels required are high with most end-users stating that low impurity levels of certain metallic elements be kept to less than 200 parts per million (‘ppm’). Zenyatta graphite does not contain any metallic impurities. Metallic impurities are very problematic to battery manufacturers and can cause the batteries to ‘short’ and disrupt the flow of charge; they can also react with the electrolyte. Reactions with the electrolyte can lead to decomposition and premature aging of the anode. - See more at: http://www.netnewsledger.com/2015/02/12/zenyatta-sees-albany-project-graphite-for-lithium-ion-batteries/#sthash.KYfYplo2.dpuf