Volt Carbon Reports Second U.S. Patent and New High-Performance Lithium-Metal Battery Results

Rhea-AI Summary

Volt Carbon (OTCQB: TORVF) announced a second U.S. patent (USPTO No. 12,491,538) to be issued on December 9, 2025, supporting its dry-separation air classification for graphite purification. The company also reported new lithium-metal battery test results from its Guelph facility, including a single-layer pouch cell reaching 1600 cycles at 0.75C, a cathode loading projected to support ~340 Wh/kg with work toward 400 Wh/kg, and strong capacity retention at an extreme 10C discharge.

Volt Carbon released demonstrations for its air classifier and expandable graphite and disclosed low-temperature coin- and pouch-cell performance with operation down to -70°C in lab tests.

Positive

• USPTO patent No. 12,491,538 issued Dec 9, 2025
• 1600 cycles at 0.75C for a lithium-metal pouch cell
• Cathode loading projected to support ~340 Wh/kg (work toward 400 Wh/kg)
• Strong capacity retention at an extreme 10C discharge
• Stable low-temperature operation demonstrated down to -70°C
• Demonstration videos released for air classifier and expandable graphite

Negative

• Results are laboratory-scale; commercial-scale replication not demonstrated
• Energy-density figures are projected and not final validated product metrics

News Market Reaction

-0.35%

1 alert

-0.35% News Effect

On the day this news was published, TORVF declined 0.35%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Key Figures

USPTO patent number: 12,491,538 Cycle life: 1600 cycles Discharge rate: 0.75C +5 more

8 metrics

USPTO patent number 12,491,538 Second U.S. patent issued on December 9, 2025

Cycle life 1600 cycles Lithium-metal single layer pouch cell at 0.75C discharge

Discharge rate 0.75C Long-duration cycling test for lithium-metal pouch cell

Energy density target 340 Wh/kg Projected lithium-metal configuration for tested cathode loading

Design goal 400 Wh/kg Parallel lithium-metal architecture under development

High-rate discharge 10C Discharge rate showing strong capacity retention with low-temperature electrolyte

Extreme cold testing -70°C Coin-cell operation for lithium-metal batteries in lab tests

Cold comparison -20°C and -40°C Pouch cell benchmark versus commercial 21700 lithium-ion cell

Market Reality Check

Price: $0.0250 Vol: Volume 754,000 is 2.98x t...

high vol

$0.0250 Last Close

Volume Volume 754,000 is 2.98x the 20-day average of 252,937, indicating elevated trading activity ahead of this update. high

Technical Price $0.0292 is trading above the 200-day MA at $0.02, indicating a pre-news uptrend.

Peers on Argus

TORVF was down 2.1% with heavy volume while key peers like AMLM (-3.94%) and NVS...

TORVF was down 2.1% with heavy volume while key peers like AMLM (-3.94%) and NVSGF (-4.69%) also declined and others were flat, pointing to mixed basic materials sentiment with a stock-specific element.

Historical Context

3 past events · Latest: Dec 03 (Positive)

Pattern 3 events

Date	Event	Sentiment	Move	Catalyst
Dec 03	Patent & battery data	Positive	-0.3%	Second U.S. patent issuance plus 1600-cycle lithium-metal battery results.
Oct 02	Patent & options	Positive	+5.7%	Second air classifier patent allowance, graphene oxide progress, and option grant.
Jul 16	Ops consolidation	Positive	+31.1%	Operations moved to Guelph with extensive trials and strong battery cycle data.

Pattern Detected

Positive technical and IP updates have generally seen supportive or strong price reactions, with only a mild divergence on the most recent similar announcement.

Recent Company History

Over recent months, Volt Carbon highlighted consolidation of operations to Guelph with expanded testing capacity and new patents on its mobile graphite purification and electrolyte technologies, followed by a continuation U.S. patent allowance, graphene oxide achievements, and stock option grants. Those prior news items on Jul 16, 2025 and Oct 2, 2025 coincided with reactions of 31.13% and 5.74%, respectively. Today’s announcement on Dec 3, 2025 extends that trajectory with a second issued U.S. patent and higher-performance lithium-metal battery data.

Market Pulse Summary

This announcement combines IP expansion and technical milestones, including a second U.S. patent and...

Analysis

This announcement combines IP expansion and technical milestones, including a second U.S. patent and lithium-metal cells reaching 1600 cycles at 0.75C with projected energy densities near 340–400 Wh/kg. Demonstrated operation down to -70°C and superior performance versus a commercial 21700 lithium-ion cell highlight differentiation for cold-weather and high-power uses. Investors may watch for scale-up progress at the Guelph facility and movement from lab demonstrations toward commercial deployments.

Key Terms

lithium-metal battery, pouch cell, coin cells, graphite purification, +4 more

8 terms

lithium-metal battery technical

"reporting of new technical results from its lithium-metal battery development program"

A lithium-metal battery is a rechargeable battery that uses elemental lithium as its negative electrode, allowing it to store much more energy in the same size or weight compared with conventional lithium-ion cells. For investors, that higher energy density can translate into lighter, longer-lasting electric vehicles and devices, but it also brings safety, manufacturing and cost challenges that affect commercialization timelines, regulatory scrutiny and supply-chain value.

pouch cell technical

"The cathode loading used for this single layer pouch cell is projected"

A pouch cell is a flat, flexible battery format that holds the same internal materials as a typical rechargeable lithium-ion battery but uses a soft, sealed foil pouch instead of a rigid metal can or hard case. Investors care because pouch cells can pack more energy into less space, are lighter, and offer manufacturing flexibility that affects product range, vehicle range, costs and safety trade-offs—think of swapping a heavy metal toolbox for a lightweight, shapeable pack.

coin cells technical

"completed a new series of cold-temperature evaluations on its lithium-metal coin cells"

Coin cells are small, round, flat batteries about the size and shape of a coin used to power watches, key fobs, small sensors and many compact electronic components. Investors care because they are a basic, high-volume component whose demand, raw-material costs, manufacturing capacity and safety or recycling rules can affect the profitability and supply chains of electronics and battery manufacturers much like a single cog can influence a machine’s performance.

graphite purification technical

"Volt Carbon's dry separation graphite purification technology"

Graphite purification is the process of removing mineral and chemical impurities from natural or synthetic graphite to reach the high carbon purity required for applications like battery anodes and electronics. It matters to investors because the method and cost of purification determine product quality, manufacturing expense, regulatory and environmental compliance, and ultimately how competitive and profitable a supplier can be—like cleaning raw ore into refined metal that can command a higher price.

expandable graphite technical

"dry separated expandable graphite under simulated battery thermal runaway conditions"

Expandable graphite is graphite that has been chemically treated so it swells and flakes out when heated, forming a thick, insulating char that blocks heat and oxygen—like popcorn creating a protective crust. Investors care because it is widely used as a flame-retardant and thermal-management additive in plastics, coatings, building materials and batteries, so changes in regulation, demand, or supply can influence product safety claims, manufacturing costs and market opportunities for suppliers and end-users.

thermal runaway technical

"under simulated battery thermal runaway conditions using high heat"

Thermal runaway is an uncontrolled, accelerating rise in temperature inside batteries, chemical systems, or equipment where heat being produced exceeds the system’s ability to shed it, often leading to fire, explosion, or permanent damage. Investors care because it creates safety recalls, regulatory scrutiny, liability and production stoppages that can sharply hurt a company’s finances and reputation — like a small spark that rapidly becomes a larger, costly disaster.

lithium-ion technical

"where most lithium-ion architectures cease to function"

A type of rechargeable battery chemistry that stores and releases energy by moving lithium ions between two electrodes; think of it as a lightweight, refillable fuel tank for electronics and vehicles. It matters to investors because lithium‑ion batteries are central to smartphones, electric vehicles and grid storage, driving demand for raw materials, manufacturers and related supply chains, and influencing costs, growth prospects and regulatory attention.

UAV technical

"important for aerospace and UAV applications that require rapid power delivery"

An unmanned aerial vehicle (UAV) is an aircraft that flies without a pilot on board, controlled remotely or by onboard software like a self-driving car. Investors care because UAVs are used across industries—delivery, agriculture, inspection, mapping, and defense—so demand, regulation, or technological advances can quickly affect revenue and costs for companies that make, operate, or rely on them. Think of a UAV as a robotic helper in the sky whose growing use can change market opportunities and risks.

AI-generated analysis. Not financial advice.

Calgary, Alberta--(Newsfile Corp. - December 3, 2025) - Volt Carbon Technologies Inc. (TSXV: VCT) (OTCQB: TORVF) ("Volt Carbon" or the "Company") is pleased to confirm the issuance of a second United States patent supporting the Company's dry-separation graphite platform and reporting of new technical results from its lithium-metal battery development program. Recent work at the Company's Guelph facility includes long-duration cycling, high-rate discharge testing, and expanded low-temperature evaluations.

1. Second Patent Issued by the USPTO: "Method and System for Aerodynamic Air Classification."
Volt Carbon has received formal notification from the United States Patent and Trademark Office confirming that its patent allowance previously announced on October 2, 2025, will be issued as USPTO Patent Number 12491538 on December 9, 2025. This represents the Company's second issued patent for its air classification technology, further strengthening its intellectual property portfolio and supporting the aerodynamic separation method at the core of Volt Carbon's dry separation graphite purification technology. The Company has also released a new demonstration video showing the air classifier operating in real time. The video link is available on the Company's website. https://voltcarbontech.com/wp-content/uploads/2025/12/Air-Classifier.mp4.

2. Lithium Metal Results: High Cycle Life and High Discharge Capability
Volt Carbon has undertaken a series of evaluations across multiple li-metal loadings to determine the most effective configurations for both extended cycle life and high discharge performance. These studies form part of the Company's ongoing effort to refine its next generation lithium metal architecture.

Volt Carbon is pleased to report that its lithium metal battery has now achieved 1600 cycles at a 0.75C discharge rate, as illustrated in Figure 1. This long duration cycling result demonstrates stable behaviour over a significant number of cycles. The cathode loading used for this single layer pouch cell is projected to support a 340 Wh/kg lithium metal configuration with parallel testing underway to advance the company's 400 Wh/kg design. Cycle life determines real-world battery longevity. Maintaining stability for 1600 cycles indicates meaningful progress toward durable lithium-metal cells.

Figure 1: Capacity retention vs cycle life for a li-metal single layer pouch cell tested at 0.75C.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/9904/276749_4cae15612467aaa9_001full.jpg

As shown in Figure 2, cells tested at a 10C discharge rate using the Company's low temperature electrolyte formulation demonstrated strong capacity retention under high power demand. This result highlights the ability of the chemistry to deliver rapid discharge performance while maintaining stability. Together, these findings support ongoing refinement of Volt Carbon's lithium metal cell designs for applications requiring both high power capability and extended service life. 10C discharge is an extreme stress test. The retention shown below demonstrates the chemistry's ability to deliver rapid power without collapse.

Figure 2: Capacity retention at a 10C discharge rate for li-metal cell.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/9904/276749_4cae15612467aaa9_002full.jpg

3. Li-Metal Battery Low Temperature Performance Update
Volt Carbon has completed a new series of cold-temperature evaluations on its lithium-metal coin cells at the Company's Guelph plant. As shown in Figure 3, the left panel presents the voltage profile of the updated 2025 cells during discharge at extreme sub-zero temperatures, demonstrating stable behaviour and strong operating characteristics under cold-load conditions; a region where conventional chemistries typically collapse.

Figure 3: Capacity retention for Cell2025 vs Cell2024 at -40°C, -60°C, and -70°C.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/9904/276749_4cae15612467aaa9_003full.jpg

The right panel compares the 2025 results with the data disclosed in the Company's September 16, 2024, press release, showing clear gains at -40°C, -60°C, and -70°C, along with continued operation in temperature ranges where most lithium-ion architectures cease to function. Very few chemistries operate reliably below -40°C, and the combined panels highlight meaningful gains in extreme-cold stability, improved low-temperature discharge behaviour, and a clear advancement over the Company's previously reported performance.

In a separate evaluation using a different cell format, Volt Carbon also completed a comparative low-temperature test of its Solid UltraBattery pouch cell against a commercially available 21700 lithium-ion cell. As shown in Figure 4, the Solid UltraBattery pouch cell continues delivering usable performance at -20°C and -40°C, while the commercial 21700 cell shows a rapid decline at -20°C and complete failure at -40°C.

Figure 4: Benchmarking of Solid UltraBattery's Pouch Cell against Commercially Available Li-ion Cells.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/9904/276749_4cae15612467aaa9_004full.jpg

This pouch-cell benchmark illustrates the advantages of Volt Carbon's lithium-metal architecture in cold environments where conventional lithium-ion chemistries typically experience sharp performance loss. For aerospace, UAV systems, northern-climate EV platforms, and defense applications operating in deep-cold conditions, this separation in low-temperature capability is a differentiating engineering advantage.

4. Expandable Graphite Testing Video Release
Volt Carbon is releasing a new video demonstrating the behaviour of its dry separated expandable graphite under simulated battery thermal runaway conditions using high heat. The test illustrates the expansion characteristics of the material and highlights its potential suitability for applications in thermal management, fire protection, and other advanced carbon products where rapid heat exposure is a design consideration. The release of this video supports the Company's ongoing efforts to advance and scale its expandable graphite product line. Volt Carbon continues to evaluate material performance under multiple thermal conditions as part of its development and market readiness activities. A link to the video is available on the Company's website. https://voltcarbontech.com/wp-content/uploads/2025/12/2025-12-01-EG-Epoxy.mp4.

V-Bond Lee, President and Chief Executive Officer, stated: "Demonstrating strong retention at a 10C discharge rate is important for aerospace and UAV applications that require rapid power delivery. These performance levels are generally not seen together in lithium-metal systems, making the results important for engineering teams evaluating high-power or cold-weather platforms. Strengthening our IP portfolio alongside this technical progress remains an important part of our strategy."

Volt Carbon Technologies, headquartered in Calgary, is a publicly traded carbon science company focused on energy storage and green energy solutions. The company operates a lithium-ion battery plant and a graphite processing facility in Guelph Ontario. Volt Carbon also holds mining claims across Ontario, Quebec, and British Columbia, supporting its commitment to sustainable resource development. For the latest updates on Volt Carbon's projects and news, visit www.voltcarbontech.com.

On behalf of the Board of Directors,

Volt Carbon Technologies Inc.
V-Bond Lee, P. Eng.
CEO, President, Chairman of the Board and Director

Information Contact :
Email: info@voltcarbontech.com
Tel: (519-763-1197)

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.

FORWARD-LOOKING STATEMENTS AND FUTURE ORIENTED FINANCIAL INFORMATION: This press release contains forward-looking statements and future oriented financial information, within the meaning of applicable securities legislation, concerning Volt Carbon's business and affairs. In certain cases, forward-looking statements or future oriented financial information can be identified by the use of words such as "plans", "expects" or "does not expect", "intends", "budget", "scheduled", "estimates", "forecasts", "anticipates" or variations of such words and phrases, or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Such statements and information include, but are not limited to: (1) the expected benefits of the Company's second issued patent supporting Volt Carbon's dry-separation graphite purification platform; (2) the scalability, commercialization, and future deployment potential of the patented air classifier technology; (3) the anticipated processing, characterization, and use of graphite materials in ongoing development programs; (4) the advancement, testing, and performance targets of Volt Carbon's lithium-metal battery program, including cycle life, energy density, discharge-rate capability, and low-temperature results; (5) the expected outcomes of further lithium-metal pouch-cell optimization and related development activities; (6) the development and potential applications of materials derived from Volt Carbon's graphite processing operations; (7) the usefulness, performance, and reliability of newly added laboratory equipment and expanded testing capabilities; (8) the impact of granted patents, including U.S. Patent No. 12,491,538, on Volt Carbon's competitive positioning and commercialization efforts; (9) the Company's goal of further improving cycle life, discharge performance, and energy density in upcoming phases of lithium-metal development; and (10) the Company's intentions to advance next-generation lithium-metal cell chemistries and the potential demand for such products in aerospace, UAV, electric mobility, and cold-weather applications.

Statements of past performance should not be construed as an indication of future performance. Forward-looking statements and future oriented financial information involve significant risks, uncertainties, and assumptions, and should not be read as guarantees of future performance or results and will not necessarily be accurate indications of whether or not such results will be achieved. These assumptions and risks include, but are not limited to: the continued existence of the carbon credit program in Canada and future viability of same, regulatory and governmental changes, capital and operating costs varying significantly from estimates, the ability to replicate the results of the Study in a demonstrator unit and at a commercial production level, the ability to construct a demonstrator unit with reasonable construction and operating costs, the ability to construct units that can operate on a commercial scale, the data available at the time of the Study, the reliability of third-party sources, including the Study, the assumptions and limitations outlined in the Study, the preliminary in nature of the Study and the fact that estimates provided therein are subject to revisions in subsequent design phases or through more comprehensive assessments such as a Feasibility Study or Life Cycle Assessment. A number of factors, including those discussed above, could cause actual results to differ materially from the results discussed in the forward-looking statements. Any and all such forward-looking statements or future oriented financial information in this press release are expressly qualified in their entirety by these cautionary statements. Readers are cautioned not to place undue reliance on such forward-looking statements and future oriented financial information. Forward-looking information and future oriented financial information are provided as of the date of this press release, and Volt Carbon assumes no obligation to update or revise them to reflect new events or circumstances, except as may be required under applicable securities legislation.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/276749

FAQ

What U.S. patent did Volt Carbon announce and when will USPTO issue it for TORVF?

Volt Carbon announced U.S. Patent No. 12,491,538, scheduled for issuance on December 9, 2025.

What lithium-metal cycle life did Volt Carbon report for TORVF on December 3, 2025?

Volt Carbon reported a single-layer pouch cell achieving 1600 cycles at a 0.75C discharge rate.

What energy density does Volt Carbon claim for its lithium-metal cells (TORVF)?

The company projects a cathode loading supporting about 340 Wh/kg and is advancing tests toward a 400 Wh/kg design.

How did Volt Carbon's lithium-metal cells perform at high discharge rates for TORVF?

Cells using the company's low-temperature electrolyte showed strong capacity retention at an extreme 10C discharge.

What low-temperature performance did Volt Carbon report for TORVF lithium-metal cells?

Volt Carbon reported stable lab operation and capacity gains versus prior data at -40°C, -60°C and -70°C.

Where can investors view Volt Carbon's demonstrations related to the patent and materials for TORVF?

The company published demonstration videos for the air classifier and expandable graphite on its website.