Standard Lithium, in Partnership with Telescope Innovations, to Produce Next Generation Solid-State Battery Materials NEW AND NOVEL LOW TEMPERATURE IP-PROTECTED METHOD FOR PRODUCING LITHIUM SULFIDE DEVELOPED IN PARTNERSHIP BETWEEN STANDARD LITHIUM AND TELESCOPE INNOVATIONS
Standard Lithium, in Partnership with Telescope Innovations, to Produce Next
Generation Solid-State Battery Materials
NEW AND NOVEL LOW TEMPERATURE IP-PROTECTED METHOD FOR PRODUCING LITHIUM SULFIDE DEVELOPED
IN PARTNERSHIP BETWEEN STANDARD LITHIUM AND TELESCOPE INNOVATIONS
LITHIUM PRODUCTS FROM STANDARD LITIHIUM’S ARKANSAS DEMONSTRATION PLANT USED TO MAKE NEXT
GENERATION LITHIUM SULFIDE PRODUCT FOR USE IN SOLID STATE BATTERIES
VANCOUVER, British Columbia, June 03, 2025 -- Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV:SLI)
(NYSE American:SLI), a leading near-commercial lithium company, is pleased to announce the successful production of
battery quality lithium sulfide as part of a collaboration with Telescope Innovations.
As previously mentioned (see Aug 28 th 2024 news release ), Standard Lithium has been working with its research and
development partner, Telescope Innovations, to develop new and novel conversion technologies to make next generation
battery materials. This new conversion process has now been successfully used to convert lithium hydroxide produced by
Standard Lithium at its southern Arkansas Demonstration Plant, into battery quality lithium sulfide (Li 2S – see news release
dated May 7 th 2025). Samples of the lithium sulfide have been shipped to solid-state battery companies in Asia and North
America for ongoing testing and validation purposes.
Standard Lithium’s President and COO, Dr. Andy Robinson commented “this development of new IP and technology with our
research partner, Telescope Innovations, exemplifies our approach to becoming the leading new lithium company in North
America. Whilst our principle area of focus, and capital allocation, is building the first DLE project in North America at our
South West Arkansas Project Phase 1 with our joint venture partner Equinor, we understand that constant technological
evolution is integral to staying at the forefront of this rapidly evolving industry. This recent work led by Telescope
demonstrates that we are able to take lithium chemicals produced from the Smackover Formation in southern Arkansas, and
then transform them into the feedstocks required by the next generation of batteries. Our partnership with Telescope
Innovations continues to be a “win-win” for our shareholders and their’s.”
Lithium sulfide is a key raw material required for many next-generation solid-state battery chemistries (see news release:
Toyota works with partners to develop Li 2S based batteries ), but despite the importance of lithium sulfide in the next
generation of battery technology, it is only produced commercially in very small quantities and at very high cost. The technical
collaboration between the two teams has resulted in a novel low-temperature patented process that has the following
advantages:
◦ Feedstock flexibility – both lithium hydroxide and lithium carbonate are viable inputs;
◦ Impurity tolerance – allows the use of technical-grade feedstocks;
◦ Lower processing temperatures (<100 °C) – reduces equipment complexity and operating costs; and,
◦ Enhanced safety in manufacturing – avoids high-temperature conditions and associated thermal risks.
About Standard Lithium Ltd.
Standard Lithium is a leading near-commercial lithium development company focused on the sustainable development of a
portfolio of large, high-grade lithium-brine properties in the United States. The Company prioritizes projects characterized by
high-grade resources, robust infrastructure, skilled labor, and streamlined permitting. Standard Lithium aims to achieve
sustainable, commercial-scale lithium production via the application of a scalable and fully integrated Direct Lithium Extraction
(“DLE”) and purification process. The Company’s flagship projects are located in the Smackover Formation, a world-class
lithium brine asset, focused in Arkansas and Texas. In partnership with global energy leader Equinor, Standard Lithium is
advancing the South West Arkansas project, a greenfield project located in southern Arkansas, and actively exploring
promising lithium brine prospects in East Texas.
Standard Lithium trades on both the TSX Venture Exchange and the NYSE American under the symbol “SLI”. Please visit the
Company’s website at www.standardlithium.com.
Investor and Media Inquiries
Chris Lang
Standard Lithium Ltd.
+1 604 409 8154
X: @standardlithium
LinkedIn: https://www.linkedin.com/company/standard-lithium/
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. This news release may contain certain
“Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and
applicable Canadian securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, “expect”,
“target, “plan”, “forecast”, “may”, “schedule” and other similar words or expressions identify forward-looking statements or
information. These forward-looking statements or information may relate to intended development timelines, future prices of
commodities, accuracy of mineral or resource exploration activity, reserves or resources, regulatory or government
requirements or approvals, the reliability of third party information, continued access to mineral properties or infrastructure,
fluctuations in the market for lithium and its derivatives, changes in exploration costs and government regulation in Canada
and the United States, and other factors or information. Such statements represent the Company’s current views with respect
to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable
by the Company, are inherently subject to significant business, economic, competitive, political and social risks,
contingencies and uncertainties. Many factors, both known and unknown, could cause results, performance or achievements
to be materially different from the results, performance or achievements that are or may be expressed or implied by such
forward-looking statements. The Company does not intend, and does not assume any obligation, to update these forward-
looking statements or information to reflect changes in assumptions or changes in circumstances or any other events
affecting such statements and information other than as required by applicable laws, rules and regulations.