Zenyatta: Initial Testing of Albany Graphite Yields Positive Results for Lithium Ion Battery Anode Application
February 12, 2015 (Source: Marketwired) — Zenyatta Ventures Ltd. (“Zenyatta” or “Company”) (TSX VENTURE: ZEN) embarked on a market development program over a year ago to initiate validation of Albany graphite in high purity graphite applications. Since the kick-off of this program, the Company has had detailed conversations with more than 35 graphite end-users, academic labs and third party testing facilities in Europe, North America and Asia under confidentiality agreements. Many of these organizations were provided a small amount of purified graphite material produced at SGS Canada Inc. (‘SGS’) Lakefield site during the development of a process flow sheet for the Albany graphite deposit pursuant to a preliminary economic assessment (‘PEA’) which is currently being completed. The samples produced at SGS are experimental in nature and may differ slightly from batch to batch and may also differ from the final product in the future. However these samples are representative of the product that could be processed and provide a good initial assessment and guidance for the potential of Albany graphite for various applications.
The goal of these initial samples was to screen Albany graphite for suitable applications while gathering feedback from the end-users and testing facilities to improve the overall properties for high value applications. The Company is now starting to receive feedback from several end-users and independent labs, some of which received repeat samples. Information from this initial test program will be used to further define the Company’s product and market strategy and set the stage for next steps in development. Zenyatta plans to provide its stakeholders brief periodic updates on the progress as meaningful information becomes available. This is the first in a series of updates on the market and business developments.
Zenyatta is pleased to disclose that first testing has shown the performance of Albany graphite to be in the range of materials used presently for Lithium-ion Batteries (‘LIB’). These initial tests, conducted by an independent lab, show that the performance of coated and shaped Albany graphite is equivalent to the leading high quality natural and synthetic graphite in commercial usage today. Testing was conducted by an independent Canadian lab using a lab-scale sample provided by SGS solely for the purpose of providing early evaluation on the suitability and effectiveness of Albany graphite in various applications. Similar positive results were also obtained on these samples by separate corporations who are in dialogue with the Company under confidentiality agreements.
- First testing on Zenyatta purified graphite meets specifications for LIB’s
- Equivalent to leading high quality natural and synthetic graphite in commercial usage
- LIB’s represent 25-30% of Zenyatta’s targeted market
This testing does not represent a statistically large sample size. Furthermore, these positive results do not mean that Zenyatta can extract and process Albany graphite for high purity graphite applications on an economic basis. Without a formal independent feasibility study, there is no assurance that the operation will be economic.
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.”
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The Zenyatta graphite material was classified and processed in a mechano-fusion machine by a standard industry technique to increase packed density of the material. The higher density Zenyatta material was coated to improve the irreversible capacity loss. Electrochemical tests were conducted using coin cells commonly used in the industry for screening purpose.
Dr. Chahar added, “Due to simple mineralogy, high crystallinity and desirable particle size distribution, Zenyatta graphite has shown first testing specification ranges needed for the Li-ion battery industry. While further tests are ongoing by potential customers to verify other performance characteristics, this initial feedback on results is extremely encouraging. We now plan to carry out advanced testing with a full cell made from the Zenyatta graphite anode.”
Based on research and dialogue with end-users, at this point in time, Zenyatta expects to have a targeted market application segmentation which includes 25-30% for high purity graphite in Lithium-ion batteries. The remaining 70-75% target applications will be discussed in upcoming news releases.
Dr. Bharat Chahar, P.Eng, VP Market Development for Zenyatta, is a Qualified Person for the purposes of National Instrument 43-101 and has reviewed the technical information in this news release.
The LIB market is relatively large and shows high growth potential. Graphite for this market has to meet many challenging performance characteristics before it can be used in a LIB. Some of the critical performance criteria include high charge/discharge capacity, low irreversible capacity loss during initial cycling, long cycle life, long shelf life, high packing density, chemical stability and easy process ability. To meet these criteria, the natural flake graphite from China used in this application, is milled, shaped, purified and coated before it can be used as anode powder. There is approximately 40-60% yield loss in the milling and shaping process for most natural flake graphite suppliers in this industry today. Also the traditional graphite anode material is usually purified using expensive chemical or thermal processes. Zenyatta is working to develop a purification system that does not require use of these traditional processes for its unique graphite material.
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.
Additionally, it is critical that the graphite has a narrow particle size distribution and consistency throughout the anode material. Battery manufacturers are very strict on specifications and require rigorous testing. Once supply contract negotiations start, they generally will not allow any change in the agreed specifications without further repeated and thorough testing.
The market for rechargeable lithium batteries can be split into four product groupings:
• Computing, communication and consumer (‘3C’) products — used in small devices that are portable or used in the home such as mobile phones, laptops, MP3 players;
• Power devices and small motive power — power tools and electric bicycles;
• Heavy duty — on and off grid energy storage; and
• Transportation — electric vehicles (‘EVs’) and hybrid electric vehicles (‘HEVs’), buses and trains.
Future growth in demand for rechargeable batteries in unit terms will continue to be led by 3C products through to 2018, but in capacity terms (MWh), power applications, heavy duty, and particularly transportation, will grow in importance. The current market for graphite in batteries is approximately 100,000 tonnes and is forecast to grow by 10-15% per year to greater than 180,000 tonnes in 2018, based mostly on the growth in the LIB sector.
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 is no assurance that the Company will be able to successfully scale-up the process used in generating these samples or show economics of producing graphite from the Albany deposit. Economics of producing the Albany graphite will be completed separately under a PEA that is in progress. This news release includes certain “forward-looking statements”, which often, but not always, can be identified by the use of words such as “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 or market 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 timing for release of sample analyses and a preliminary economic assessment, the expected uses for graphite 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 exploration, metallurgical processing, project development, market 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 identify mineral resources; failure to convert estimated mineral resources to reserves; the inability to complete a prefeasibility study; the preliminary nature of metallurgical test results; 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.
Raj Shah has professional experience working for over a half a dozen years at financial firms such as Merrill Lynch and First Allied Securities Inc., ... <Read more about Raj Shah>