Tokyo Tech Research Confirms Ease of Conversion of Zenyatta's Albany Graphite to Graphene
Thunder Bay, Ontario--(Newsfile Corp. - October 16, 2018) - Zenyatta Ventures Ltd. (TSXV: ZEN) ("Zenyatta" or "Company") today reported that researchers in Japan have published findings in the Journal of Materials Science linking particle size to the ease of producing graphene from graphite through exfoliation — the smaller the feed graphite particle, the easier to exfoliate. The researchers further concluded that, due to the size of its flakes, the exfoliation productivity of graphite derived from Zenyatta's unique Albany deposit in Northern Ontario performed up to 1500% better than the researchers' reference flake graphite materials.
In a 2017 Zenyatta news release, Dr. Yoshihiko Arao, Assistant Professor in the Department of Chemical Engineering at Tokyo Tech, stated "Zenyatta's high-purity graphite material was tested by our scientific team on mechanical conversion to graphene and discovered it converted much easier and with higher yields of graphene than our reference material. We have tested many types of natural graphite but found Zenyatta's Albany Graphite material to have better exfoliation performance and produce better graphene particles than the reference material. We believe that this is an extraordinary, unique material and we would like to carry out further collaborative work with Zenyatta on graphene applications."
The following significant test results are reported in the paper by Dr. Arao and Dr. Masatoshi Kubouchi at Tokyo Tech:
- The main conclusion of the paper was that the smaller the feed graphite particle, the easier it is to exfoliate thus indicating that the graphite particle size is quite an important variable for successful exfoliation.
- Exfoliation productivity of smaller Albany Graphite flakes performs up to 1500% better than the larger reference flake graphite materials.
- Albany Graphite particles reach a 2 µm particle size with a standard milling process, while the reference flake graphite material could not mill below a 3 µm particle size as the graphite tends to agglomerate together.
- It is concluded that the fine crystalline nature of Albany Graphite contributes to the relatively easy milling characteristics. This can be attributed to the unusual geological mode of formation (a rapid crystallization igneous process) which accounts for the superior crystallinity and overall quality of the graphite mineralization found in this unique deposit.
- Graphene exfoliated from Albany graphite produced material with the highest aspect ratio with an average thickness of 2.0 nm indicative of graphene with 2.4 layers. Also, the optical absorbance of the Zenyatta graphene dispersion was 2-10 times better than the other 3 reference samples that were tested. This demonstrated that concentrated graphene dispersions can be easily produced from Albany Graphite. The resulting small and thin graphene dispersion is suitable for printable inks.
This paper confirms the reason for success on the Company's many graphene research and product development initiatives, especially in composites. Tokyo Tech has established that Zenyatta's Albany Graphite converts (exfoliates) easily to graphene, producing mono-layer to tri-layer material with excellent dispersion properties and is highly suitable for many graphene and graphene-oxide applications.
Mr. Peter Wood, P.Eng, P.Geo., President and COO of Zenyatta, is the "Qualified Person" for the purposes of National Instrument 43-101 and has reviewed, prepared and supervised the preparation of the technical information contained in this news release.
For further information:
Dr. Francis Dubé, Co-CEO & Head of Business Development and Technology
Tel: +1 (289) 821-2820
Email: fdube@zenyatta.ca
About Zenyatta
Zenyatta's Albany Graphite Project hosts a large and unique quality deposit of highly crystalline graphite. Independent labs in Japan, UK, Israel, USA and Canada have demonstrated that Zenyatta's Albany Graphite/Naturally PureTM easily converts (exfoliates) to graphene using a variety of simple mechanical and chemical methods. The deposit is located in northern Ontario just 30km north of the Trans-Canada Highway, near the communities of Constance Lake First Nation and Hearst. Important nearby infrastructure include hydro-power, natural gas pipeline, a rail line 50 km away and an all-weather road just 10 km from the deposit.
To find out more on Zenyatta Ventures Ltd., please visit our website at www.zenyatta.ca. A copy of this press release and all material documents with respect of the Company may be obtained on Zenyatta's SEDAR profile at www.sedar.ca.
CAUTIONARY STATEMENT: Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release may contain forward looking information and Zenyatta cautions readers that forward looking information is based on certain assumptions and risk factors that could cause actual results to differ materially from the expectations of Zenyatta included in this news release. This news release includes certain "forward-looking statements", which often, but not always, can be identified by the use of words such as "potential", "believes", "anticipates", "expects", "estimates", "may", "could", "would", "will", or "plan". These statements are based on information currently available to Zenyatta and Zenyatta provides no assurance that actual results will meet management's expectations. Forward-looking statements include estimates and statements with respect to Zenyatta's future plans, objectives or goals, to the effect that Zenyatta or management expects a stated condition or result to occur, including the expected uses for graphite or graphene in the future, and the future uses of the graphite from Zenyatta's Albany deposit. Since forward-looking statements are based on assumptions and address future events and conditions, by their very nature they involve inherent risks and uncertainties. Actual results relating to, among other things, results of metallurgical processing, ongoing exploration, project development, reclamation and capital costs of Zenyatta's mineral properties, and Zenyatta's financial condition and prospects, could differ materially from those currently anticipated in such statements for many reasons such as, but are not limited to: failure to convert estimated mineral resources to reserves; the preliminary nature of metallurgical test results; the inability to identify target markets and satisfy the product criteria for such markets; the inability to complete a prefeasibility study; the inability to enter into offtake agreements with qualified purchasers; delays in obtaining or failures to obtain required governmental, environmental or other project approvals; political risks; uncertainties relating to the availability and costs of financing needed in the future; changes in equity markets, inflation, changes in exchange rates; fluctuations in commodity prices; delays in the development of projects; capital and operating costs varying significantly from estimates and the other risks involved in the mineral exploration and development industry; and those risks set out in Zenyatta's public documents filed on SEDAR. This list is not exhaustive of the factors that may affect any of Zenyatta's forward-looking statements. These and other factors should be considered carefully and readers should not place undue reliance on Zenyatta's forward-looking statements. Although Zenyatta believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. Zenyatta disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.