Solidion Awarded Key Patents on Drop-In Solid-State Conversion Technology

Solidion Technology (Nasdaq: STI) announced on April 21, 2026 that it was granted a series of key patents for its proprietary liquid-to-solid electrolyte conversion platform.

Rhea-AI Summary

Solidion Technology (Nasdaq: STI) announced on April 21, 2026 that it was granted a series of key patents for its proprietary liquid-to-solid electrolyte conversion platform. The patents cover a process that enables existing lithium-ion cell factories to produce semi-solid or solid-state batteries without new equipment, and add to a portfolio of over 345 patents.

The technology reportedly allows manufacturing dry cells, injecting a proprietary liquid electrolyte, then converting it in-cell to reduce or eliminate flammability, potentially enabling large-scale solid-state production using current Li-ion facilities.

Positive

• Patents granted covering liquid-to-solid conversion (April 21, 2026)
• Portfolio size exceeds 345 patents
• Manufacturing advantage enables solid-state cells using existing Li-ion equipment

Negative

• None.

Argus Apr 21 session

+0.34% close to close Open Argus

Details

News Market Reaction – STI

On Apr 21, the day this news came out, STI closed 0.34% above the previous close.

Data tracked by StockTitan Argus for the Apr 21 session.

Key Figures

Patent portfolio size: over 345 patents

Patent portfolio size

over 345 patents

Battery-related patents held by the company

Historical Context

5 past events · Latest: Apr 20

5 events

1. Apr 20

   Patent monetization deal

   24h Move

   -17.3%

   Hilco Global agreement to monetize broad energy-related patent portfolio.

2. Apr 15

   Full-year earnings

   24h Move

   -1.0%

   Reported minimal 2025 revenue and substantial net and derivative losses.

3. Feb 12

   Supply MOU signed

   24h Move

   -16.5%

   Non-binding MOU to supply pouch cells for ESS with potential revenue.

4. Jan 20

   Army STTR grant

   24h Move

   -8.7%

   Third U.S. Army STTR grant for advanced fiber-based battery system R&D.

5. Dec 29

   DOE grant award

   24h Move

   +22.1%

   Second DOE grant to scale carbon-nanosphere material for nuclear reactors.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

solid-state batteries, lithium-ion battery, electrolyte, energy storage systems (ESS), +1 more

5 terms

solid-state batteries technical

"produce solid-state batteries without new equipment or process investment"

Solid-state batteries store and deliver electrical energy using a solid material instead of the liquid or gel found in conventional lithium-ion cells; imagine replacing a puddle that carries traffic with a solid, well-paved bridge that moves charge more compactly and securely. They matter to investors because they promise higher energy density, faster charging, improved safety and longer lifespan—advantages that can expand markets and margins—while commercial success depends on manufacturing scale, costs and raw-material supply.

lithium-ion battery technical

"enables existing lithium-ion battery manufacturers to produce solid-state batteries"

A lithium-ion battery is a rechargeable energy cell that stores and releases power by moving lithium ions between two electrodes, like a pump moving water back and forth to hold and deliver energy. Investors care because these batteries power electric vehicles, portable electronics and grid storage, so factors such as cost, energy density, lifespan, and raw-material supply directly affect manufacturing costs, product competitiveness and long-term company profits.

electrolyte medical

"converting the liquid electrolyte inside the cells into a semi-solid or solid electrolyte"

Electrolytes are tiny charged particles dissolved in a liquid that allow electricity to flow—think of them like salt in soup that makes current move through the liquid. They matter to investors because they are core to battery performance, energy storage, and certain medical products; their composition and quality affect product efficiency, safety, regulatory approval, supply chains and production costs, all of which can influence a company’s financial prospects.

energy storage systems (ESS) technical

"safe operations of energy storage systems (ESS) and all-types of electric vehicles"

Energy storage systems (ESS) are technologies that capture and hold electricity or energy for use later — examples include large batteries, pumped hydro, and thermal storage. They matter to investors because they let power producers and grid operators smooth out supply and demand, store cheap surplus power for sale at higher prices, and provide reliability services; think of an ESS as a savings account for electricity that can boost revenue and reduce risk for energy assets.

eVTOL technical

"electric vertical take-off and landing aircraft (eVTOL), and e-boats"

eVTOL stands for "electric vertical takeoff and landing" aircraft, which are small, electric-powered vehicles capable of taking off and landing vertically like a helicopter. They are designed to provide quick, on-demand transportation within cities or between locations, potentially transforming urban mobility. For investors, eVTOLs represent a growing segment of innovative transportation technology with potential for significant market impact and future growth.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Enables Solid-State Battery Production at Existing Li-Ion Facilities Without New Equipment

DAYTON, Ohio, April 21, 2026 /PRNewswire/ -- Solidion Technology Inc. (Nasdaq: STI), today announced the grant of a series of key patents covering its proprietary liquid-to-solid electrolyte conversion platform — a technology that enables existing lithium-ion battery manufacturers to produce solid-state batteries without new equipment or process investment — adding to the Company's portfolio of over 345 patents.

Flame-resistant electrolytes are key to safe operations of energy storage systems (ESS) and all-types of electric vehicles, such as drones, electric bikes, e-automobile, electric vertical take-off and landing aircraft (eVTOL), and e-boats. The fire and explosion danger in conventional lithium-ion batteries is caused by certain highly volatile and flammable organic solvents commonly used in liquid electrolytes.

The technology invented includes using any current lithium-ion cell manufacturing facility to produce dry battery cells, injecting a proprietary liquid electrolyte into the dry cells, and then converting the liquid electrolyte inside the cells into a semi-solid or solid electrolyte, thereby reducing or eliminating flammability.

A major advantage of such a breakthrough technology is that solid-state batteries can be manufactured at-scale today rather than tomorrow, using existing lithium-ion battery manufacturing facilities. There is no need to develop new processes and equipment.

Solidion, a pioneer in this "liquid-to-solid conversion" technology, is positioned to readily transform the entire lithium-ion battery industry into producers of semi-solid and solid-state batteries.

About Solidion Technology, Inc.

Headquartered in Dallas, Texas with pilot production facilities in Dayton, Ohio, Solidion's (NASDAQ: STI) core business includes manufacturing of next-generation battery materials and components, as well as development and production of next-generation batteries for energy storage, including UPS systems serving the artificial intelligence (AI) data center market and electric vehicles applications. The Company holds 345+ patents, covering innovations such as high-capacity, silane gas free and graphene-enabled silicon anodes, biomass-based graphite, advanced lithium-sulfur and lithium-metal technologies.

For more information, please visit www.solidiontech.com

Cautionary Note Regarding Forward-Looking Statements:

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Solidion Technology Inc., (NASDAQ: STI) (the "Company," "Solidion," "we," "our" or "us") desires to take advantage of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and is including this cautionary statement in connection with this safe harbor legislation. The words "forecasts" "believe," "may," "estimate," "continue," "anticipate," "intend," "should," "plan," "could," "target," "potential," "is likely," "expect" and similar expressions, as they relate to us, are intended to identify forward-looking statements. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future developments or otherwise, except as may be required by law.

View original content to download multimedia:https://www.prnewswire.com/news-releases/solidion-awarded-key-patents-on-drop-in-solid-state-conversion-technology-302748200.html

SOURCE Solidion Technology, Inc.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What patents did Solidion (STI) announce on April 21, 2026?

They announced granted patents for a liquid-to-solid electrolyte conversion platform. According to the company, the patents cover converting injected liquid electrolyte inside dry cells into semi-solid or solid electrolytes to reduce flammability.

How does Solidion's STI technology enable solid-state battery production?

It uses existing lithium-ion lines to make dry cells, inject liquid electrolyte, then convert it in-cell to solid or semi-solid. According to the company, this removes the need for new equipment or process investment to produce solid-state batteries.

Does Solidion (STI) claim the patents improve battery safety?

Yes — the company links the conversion to flame-resistant electrolytes that reduce flammability and explosion risk. According to the company, converting liquid electrolytes in-cell addresses hazards from volatile organic solvents in conventional Li-ion cells.

Will Solidion's STI patents require battery factories to buy new equipment?

No — the company says existing lithium-ion manufacturing facilities can adopt the process without new equipment or process investment. According to the company, the method leverages current lines to create semi-solid and solid-state batteries at scale.

How large is Solidion's patent portfolio after the latest grants?

The company reports a portfolio of over 345 patents after the latest grants on April 21, 2026. According to the company, the new patents add key intellectual property for its conversion platform.