E3 Lithium and Pure Lithium Report Results from Phase 1 of the Lithium Metal Battery Joint Development Agreement

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CALGARY, Alberta — E3 LITHIUM LTD. (TSXV: ETL) (FSE: OW3) (OTCQX: EEMMF), “E3 Lithium” or the “Company,” a leader in Canadian lithium, is pleased to announce the initial results from the battery cells manufactured under the Joint Development Agreement with Pure Lithium Corporation (“Pure Lithium”), using E3 Lithium’s brines and DLE technology and Pure Lithium’s innovative extraction and battery technology.

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As previously announced on March 13, 2025, several variations of lithium chloride concentrate that reflect specific locations along the E3 Lithium process flow sheet within the commercial facility design were used to make lithium metal anodes at Pure Lithium’s Boston facility. The lithium from the E3 concentrated lithium chloride was electrodeposited as pure lithium metal onto a copper substrate, creating a complete, battery ready anode. These anodes were then assembled by Pure Lithium into batteries, and their electrochemical performance was evaluated in full cells. Notable results include:

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The results of this study concluded that an easily producible version of E3’s lithium concentrate provided the most cost-effective feedstock for use in Pure Lithium’s batteries. It also demonstrated the robustness of Pure Lithium’s process, showing no performance differences between batteries made using lithium chloride from E3’s Leduc Brines, and those made from Pure Lithium’s standard sources. The two companies continue to collaborate on the development and planning of an integrated process that can deliver the highest purity lithium metal anodes at the lowest possible cost.

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“These results confirm that E3’s lithium concentrate can produce battery-ready lithium metal anodes using Pure Lithium’s technology,” said Chris Doornbos, President and CEO of E3 Lithium. “The Pure Lithium team has worked very hard in making these batteries and confirming the performance of our lithium. We are very encouraged by the results, and I am excited by the prospect of developing a local lithium battery supply chain in collaboration with Pure Lithium.”

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“I am delighted to reinvent the lithium supply chain with E3 Lithium. We not only produced pure lithium metal anodes from unconventional sources of lithium using a newly invented technology but also validated their performance by cycling them in over 100 batteries. Rigorous electrochemical testing of battery materials is imperative, and to get such great results consistently, using a technology that was specifically developed to be cost effective, is truly exciting,” said Emilie Bodoin, Founder, Chairman & CEO of Pure Lithium.

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ON BEHALF OF THE BOARD OF DIRECTORS
Chris Doornbos, President & CEO
E3 Lithium Ltd.

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About E3 Lithium

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E3 Lithium is a development company with a total of 16.2 million tonnes of lithium carbonate equivalent (LCE) Measured and Indicated ¹ as well as 0.9 million tonnes LCE Inferred mineral resources² in Alberta and 2.5 million tonnes LCE Inferred mineral resources³ in Saskatchewan. The Clearwater Pre-Feasibility Study outlined a 1.13 Mt LCE proven and probable mineral reserve with a pre-tax NPV8% of USD 5.2 Billion with a 29.2% IRR and an after-tax NPV8% of USD 3.7 Billion with a 24.6% IRR¹. E3 Lithium’s goal is to produce high purity, battery grade lithium products to power the growing electrical revolution. With a significant lithium resource and innovative technology solutions, E3 Lithium has the potential to deliver lithium to market from one of the best jurisdictions in the world.

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2: The mineral resource NI 43-101 Technical Report for the North Rocky Property, effective October 27, 2017, identified 0.9 Mt LCE (inferred) and is available on the E3 Lithium’s website ( e3lithium.ca/our-assets/technical-reports) and SEDAR+ ( www.sedarplus.ca).

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3: The mineral resource NI 43-101 Technical Report for the Estevan Lithium District, effective May 23, 2024, identified 2.5 Mt LCE (inferred) and is available on the E3 Lithium’s website ( e3lithium.ca/our-assets/technical-reports) and SEDAR+ ( www.sedarplus.ca).

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About Pure Lithium

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Pure Lithium is a disruptive Boston-based lithium metal battery technology company led by inventor and lithium expert, CEO Emilie Bodoin, and world-renowned battery and metallurgical expert, MIT Emeritus Professor Donald R. Sadoway, as full-time CSO. The Company’s novel Brine to Battery™ technology combines metal extraction and anode production, unlocking unconventional sources of lithium. The resulting pure lithium metal anode is the core component of our lithium metal vanadium oxide battery, a step-change improvement over today’s lithium-ion technology in cell performance, cost, and safety. Additionally, the battery is free of graphite, cobalt, nickel, and manganese. For more information, visit www.purelithium.io or email [email protected].

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Forward-Looking and Cautionary Statements

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This news release includes certain forward-looking statements as well as management’s objectives, strategies, beliefs and intentions or forward-looking information within the meaning of applicable securities laws. Forward-looking statements are frequently identified by such words as “believe”, “may”, “will”, “plan”, “expect”, “anticipate”, “estimate”, “intend”, “project”, “potential”, “possible” and similar words referring to future events and results. Forward-looking statements are based on the current opinions, expectations, estimates and assumptions of management in light of its experience, perception of historical trends, and results of the PFS, but such statements are not guarantees of future performance. In particular, this news release contains forward-looking information relating to: the potential for delivery of lithium to market; expected timing for releasing battery cell performance results; expectations regarding results of the upcoming performance tests; timing for completion of the testing program; and the anticipated benefits of the foregoing. In preparing the forward-looking information in this news release, the Company has applied several material assumptions, including, but not limited to, that any additional financing needed will be available on reasonable terms; the exchange rates for the U.S. and Canadian currencies will be consistent with the Company’s expectations; that the current exploration, development, environmental and other objectives concerning the Clearwater Project can be achieved and that its other corporate activities will proceed as expected; that the current price and demand for lithium will be sustained or will improve; that general business and economic conditions will not change in a materially adverse manner and that all necessary governmental approvals for the planned activities on the Clearwater Project will be obtained in a timely manner and on acceptable terms; the continuity of the price of lithium; that the results of the testing program will be delivered in a timely manner consistent with the Company’s projected timelines; and that the results will be in line with management’s expectations.