Ten-Nine Takes Its TENIX Cathode Additive to Commercial Scale

Ten-Nine Technologies has moved TENIX, a cathode additive blended into cathode material at 0.5–2% of its weight to slow the chemical decomposition that degrades battery performance with age, into commercial-scale production in Oklahoma.

Ten-Nine Technologies has moved TENIX, its cathode additive, from pilot quantities into commercial-scale production in Oklahoma. The material is designed to interrupt the chemical decomposition that gradually erodes a lithium-ion battery's performance as it cycles and ages, and it is blended directly into cathode material during manufacturing at a loading of 0.5% to 2% of the cathode's weight.

That dosing rate is the number that matters most for anyone trying to place TENIX in the battery supply chain. At 0.5–2%, the additive works out to roughly 0.5 to 2 kilograms for every 100 kilograms of cathode powder produced. It is a trace ingredient by mass and a potentially significant one by effect — which is precisely the profile of the chemistry that battery makers have spent the last several years chasing.

A Trace Ingredient With Outsized Leverage

Cathode active material is the single most expensive component in a lithium-ion cell, and it is also where most of the degradation story plays out. Over hundreds or thousands of charge cycles, side reactions at the cathode surface consume active lithium, thicken interfacial layers and slowly raise internal resistance. The cell does not fail dramatically; it just holds less energy and delivers it less willingly. In an electric vehicle, that shows up as shrinking range. In a grid storage installation, it shows up as a shortening revenue life against a fixed warranty.

An additive that attacks that mechanism has an unusual commercial shape. Because it is dosed at a fraction of the cathode's weight, the incremental material cost per cell can be small relative to the cathode itself, while the benefit — extra usable cycles — accrues over the whole asset life. That asymmetry is why additive chemistry, electrolyte formulations and coatings have become one of the more active corners of battery R&D, alongside the more visible work on cell formats and metal chemistries.

Ten-Nine's move to commercial-scale output in Oklahoma, reported by Charged EVs, is the step where a laboratory result becomes a procurement question. Cell manufacturers do not qualify a new input on the strength of coin-cell data alone. They want consistent lot-to-lot chemistry, volumes that scale with their own ramp, and a supply point that does not introduce a single-source risk into a line already exposed to cathode, separator and electrolyte bottlenecks.

The Math Cell Makers Will Run

Scaled up from the stated loading, a 0.5–2% blend implies on the order of 5 to 20 kilograms of additive for every tonne of cathode material a plant produces — an illustrative conversion of the figures Ten-Nine has given rather than a disclosed production target. For a cathode facility running at industrial volumes, that arithmetic turns a specialty chemical into a recurring, contracted input with its own logistics and quality-control regime.

It also frames the negotiation. Additive suppliers sell on the difference between the cost of the blend and the value of the cycles it returns. Cell makers will want that quantified in their own chemistry, in their own format, under their own duty cycle — nickel-rich NMC behaves differently from lithium iron phosphate, and an EV pack's thermal history has little in common with a stationary storage rack that charges once a day. Qualification programs of this kind typically run through multiple rounds of cell-level and module-level testing before a purchase order appears.

The domestic siting is not incidental either. North American cathode capacity has been the conspicuous gap in the region's battery build-out: cell assembly plants have gone up faster than the upstream materials that feed them, leaving converters and precursor suppliers concentrated overseas. A US-produced additive shipping to US cathode and cell plants fits the direction of travel for content-origin rules and procurement preferences, and it shortens a supply line that otherwise crosses an ocean.

Who Sits Downstream of an Additive Like This

The customers for a cathode additive are, in order, the cathode active material producers who do the blending, then the cell manufacturers who buy that cathode, and then the automakers and storage integrators who buy the cells. Value from longer-lived cells flows the other way: an OEM writing an eight-year battery warranty, or a storage developer modelling twenty years of throughput, is the party whose economics change most if degradation slows.

That makes the near-term commercial signals fairly specific. Watch for named cathode partners, for volume commitments expressed in tonnes rather than kilograms, and for third-party cycle-life data generated in commercial-format cells rather than in the lab. Watch, too, for whether the Oklahoma plant's output is contracted or merchant — a merchant additive sold into multiple cathode makers behaves like a specialty chemicals business, while a single anchor offtake behaves like a captive supply arrangement with different risk.

For listed battery-chain names, an additive at this stage of commercialization is not yet a modelable line item. There is no disclosed capacity figure, no announced offtake, and no pricing. What it does do is add another entrant to the increasingly crowded set of companies claiming a chemistry route to longer cell life — a set that includes electrolyte formulators, surface-coating specialists and silicon-anode developers, most of them competing for the same qualification slots at the same handful of cell plants.

The Backdrop Into Which It Lands

The announcement arrives with equity markets in a constructive mood. At the most recent close on Friday, 11 September 2026, the S&P 500 tracker SPY finished at $764.29, up 0.85% on the day from a prior close of $757.83. The Nasdaq 100 proxy QQQ closed at $714.88, up 0.87%, and the Dow tracker DIA at $525.79, up 0.97%. None of those moves speak to battery materials specifically, but they set the risk appetite in which private materials companies raise capital and public battery suppliers are valued.

The harder context is sectoral. Battery cell prices have fallen far enough that cell makers scrutinize every gram of added bill-of-materials cost, and any additive has to clear that bar on measured performance, not on narrative. At the same time, the shift of demand toward stationary storage — where calendar and cycle life dominate the investment case even more than in EVs — has widened the audience for exactly the problem TENIX claims to address.

The next disclosures to look for from Oklahoma are mundane and decisive: nameplate capacity, qualification milestones with named counterparties, and whether the 0.5–2% loading holds at production scale or narrows once real cathode lines report back. Commercial-scale production is the beginning of that evidence, not the end of it.

Key facts

• Product: TENIX cathode additive, now in commercial-scale production in Oklahoma
• Dosing rate: 0.5–2% of cathode weight, or 0.5–2 kg per 100 kg of cathode
• Function: Slows the chemical decomposition that degrades battery performance with age
• Market backdrop: S&P 500 tracker SPY closed at $764.29, +0.85%, as of 11 Sep 2026 20:00 GMT

Frequently asked questions

What is TENIX?

TENIX is a cathode additive developed by Ten-Nine Technologies. It is blended into cathode material during battery manufacturing and is designed to stop the chemical decomposition that saps a lithium-ion battery's performance as the cell ages and cycles. The company has moved the material into commercial-scale production at a facility in Oklahoma.

How much TENIX goes into a battery?

The additive is blended at 0.5% to 2% of the cathode's weight. In practical terms that is roughly 0.5 to 2 kilograms of TENIX for every 100 kilograms of cathode material produced. It is a trace ingredient by mass, which is typical for performance additives whose value comes from chemistry rather than bulk.

Why does cathode degradation matter?

Cathode side reactions consume active lithium and raise a cell's internal resistance over time. The result is not sudden failure but gradual loss: less usable energy and weaker power delivery. In an electric vehicle that appears as shrinking range; in grid storage it shortens the revenue-earning life of an asset sold against a fixed warranty.

Who would buy an additive like this?

The direct customers are cathode active material producers, who do the blending. Downstream come cell manufacturers, and then automakers and storage integrators. The economic benefit of slower degradation accrues mostly to those end buyers, because they are the parties writing multi-year battery warranties or modelling decades of storage throughput.

Is Ten-Nine Technologies a publicly traded company?

No listing has been identified for Ten-Nine Technologies in connection with this announcement, so there is no exchange ticker to attach to the story. Investors looking for exposure to the theme would have to look at publicly traded cathode producers, cell manufacturers and specialty chemical suppliers rather than at Ten-Nine itself.

What should be watched next?

The meaningful milestones are named cathode or cell-maker partners, volume commitments stated in tonnes rather than kilograms, independent cycle-life data generated in commercial-format cells, and a disclosed nameplate capacity for the Oklahoma plant. Whether the 0.5–2% loading range holds once real production lines report back is also a key test.

Sources

• Ten-Nine Technologies moves its TENIX cathode additive to commercial-scale production in Oklahoma — Charged EVs

Photo: Oğuz Kaan Boğa · Pexels Licence — source