Rock Tech Receives Further Research Funding From German Government

• After having received funding from EIT Raw Materials, a body of the European Union, the Federal Ministry for Research, Technology and Space has selected Rock Tech for funding in the lithium field.
• Rock Tech will collaborate with research partners from RWTH Aachen University (Rheinisch-Westfälische Technische Hochschule Aachen), one of Europe's leading technical universities, especially renowned for its strong competencies in engineering and applied sciences.

TORONTO, Aug. 12, 2025 /CNW/ - Rock Tech Lithium Inc. (TSXV: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the "Company" or "Rock Tech") is pleased to announce that it has been awarded funding from the Bundesministerium für Forschung, Technologie und Raumfahrt (Federal Ministry for Research, Technology and Space) for the project "ELiSePro – Efficient Lithium Recovery Using Selective Processes". The aim of this initiative is to further increase lithium yield in our converter process at the Guben site, making a significant contribution to Germany's raw material independence.

The project will be implemented in collaboration with RWTH Aachen University, highlighting the strong partnership between industry and leading academic research in Germany. The total funding amount is approximately 250,000 Euros.

As part of the project, various state-of-the-art ion separation methods (including nanofiltration, capacitive deionization, and lithium-ion sieves) will be systematically compared to minimize lithium losses in the process. The results will be evaluated based on economic and technological criteria and are intended for direct industrial application in our Guben converter in order to increase our recovery. Innovative findings will also be published in scientific journals and be patented. 

"This funding supports the technological advancement of the German and European battery industry – and even it's a relatively small amount, it's an important step towards building additional know-how for strengthening security of supply for critical raw materials and building sustainable value chains in Europe" says Mirco Wojnarowicz, CEO of Rock Tech.

In the past few months, Rock Tech has received funding from several public sources, to become a technological leader in lithium processing. This new funding underlines the strategic relevance of Rock Tech and its projects in Canada and Germany, the latter one of which was selected as strategic project under the EU Critical Raw Materials Act (CRMA). After having granted funding from EIT RawMaterials under the prestigious KAVA (Knowledge and Innovation Activities) grant program (800,000 Euros) as well as from Ontario's Critical Minerals Innovation Fund (CMIF) to advance lithium ore sorting technologies (388,000 CAD), this new funding is the third program to position Rock Tech as strategic relevant player in the lithium industry.

On behalf of the Company,
Mirco Wojnarowicz
CEO

ABOUT ROCK TECH
Rock Tech's vision is to supply the electric vehicle and battery industry with sustainable, locally produced lithium, targeting a 100% recycling rate. To ensure resilient supply chains, the company plans to build lithium converters at the doorstep of its customers, beginning with the Company's proposed Lithium Hydroxide Converter in Guben, Brandenburg, Germany. The second Converter is planned to be built in, Ontario, Canada. Rock Tech Lithium plans to source raw material from its own Georgia Lake spodumene project in the Thunder Bay Mining District of Ontario, Canada, and procure from other ESG-compliant mines. Ultimately, Rock Tech's goal is to create a closed-loop lithium production system. Rock Tech has gathered one of the strongest teams in the industry to close the most pressing gap in the clean mobility story. The Company has adopted strict environmental, social and governance standards and is developing a proprietary refining process to increase efficiency and sustainability further.

Rock Tech Lithium Inc, 2700-40 Temperance Street, Toronto ON M5H 0B4 CAN.

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING INFORMATION Certain statements contained in this news release constitute "forward-looking information" under applicable securities laws and are referred to herein as "forward-looking statements". All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as "expects", "anticipates", "plans", "predicts", "believes", "estimates", "intends", "targets", "projects", "forecasts", "may", "will", "should", "would", "could" or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this press release contains forward-looking information pertaining to expectations concerning the Guben Converter, including the design and features of the Guben Converter, as well as the expected costs, capital expenditures, timing and outcomes thereof; statements regarding the Company's future plans, estimates, and schedules relating to the Guben Converter, including the anticipated timing of future activities taken in support of the development thereof; Rock Tech's potential financing arrangements; the expected funding from the Federal Ministry of Research, Technology and Space for the project ELiSePro as well as from EIT RawMaterials under the KAVA program and the CMIF, the expected economic performance of the Guben Converter and anticipated production of battery-grade Lithium Hydroxide and related processing methods and innovation employed; the estimated capital and operating costs of the Guben Converter; the anticipated timing and outcomes of a final investment decision, construction activities and commissioning of the Guben Converter; statements regarding the Company's sustainability and ESG related goals and strategy, including the benefits and achievement thereof and future actions taken by the Company in relation thereto; expected regulatory processes and final outcomes; expectations regarding the electric vehicle industry, including the demand for and pricing of battery-grade Lithium Hydroxide and the benefits therefrom, and the development of political and regulatory frameworks especially in Germany and the European Union; Rock Tech's opinions, beliefs and expectations regarding the Company's business strategy, development and exploration opportunities and projects; and plans and objectives of management for the Company's operations and properties. Forward-looking statements by their nature are based on assumptions and involve known and unknown risks, uncertainties and other factors which may cause the actual results to differ materially from the forward-looking statements, including the risks, uncertainties and other factors discussed in the Company's most recent management's discussion and analysis and annual information form filed with the applicable securities regulators. No assurances can be given that any of the events anticipated by the forward-looking statements will transpire or occur, and the Company cautions the reader not to place undue reliance upon any such forward-looking statements. The Company does not intend, nor does it assume any obligation to update or revise any of the forward-looking statements, whether as a result of new information, changes in assumptions, future events or otherwise, except to the extent required by applicable law. 

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

SOURCE Rock Tech Lithium Inc.

For further information: Kerstin Wedemann, Chief Legal & Corporate Officer - [email protected]; [phone]