LG Energy Finds a Voltage Window That Calms LMR Cells

LG Energy Solution and Seoul National University, working with Jongwoo Lim's team in the university's Department of Chemistry, identified a set of charge and discharge voltage limits that suppresses gas generation in lithium manganese-rich (LMR) cells, in research published in Nature.

Gas generation has been one of the reasons lithium manganese-rich chemistry has stayed in the laboratory rather than under the floor of an electric vehicle. LG Energy Solution and researchers at Seoul National University now say the problem can be managed by controlling where a cell is charged to and discharged down to.

The two organisations reported a set of operating conditions that suppresses gas generation in lithium manganese-rich (LMR) cells, tying the effect to charge and discharge voltage limits. The work was carried out with Jongwoo Lim's team in Seoul National University's Department of Chemistry and published in Nature, according to Charged EVs.

Why gas is the thing that stops LMR cells scaling

LMR cathodes are attractive for a simple reason: they lean heavily on manganese, one of the cheapest and most abundant battery metals, and they lean less on nickel and cobalt, the two that dominate cell cost and carry the most exposed supply chains. The chemistry also promises high energy density, which is the property LFP — lithium iron phosphate — gives up in exchange for its low cost and long life.

The trouble has always been what happens inside the cell during cycling. LMR materials operate over a wide voltage span, and at the upper end of that span the electrolyte and the cathode surface can react and release gas. In a coin cell in a lab, that is a data artefact. In a large-format pouch or prismatic cell destined for a vehicle pack, it is a swelling, pressure and safety problem, and it is the kind of problem that cannot be engineered around with packaging alone. That is precisely the obstacle the new research addresses.

The significance of the finding is where it locates the cause. If gas generation is tied to the charge and discharge voltage limits a cell is cycled between, then the lever is a control lever — firmware, battery management strategy, the operating window a pack is specified to — rather than an entirely new cathode material or electrolyte formulation. Control levers move faster through a development programme than materials do.

What a voltage window buys, and what it costs

There is a trade-off buried in any voltage-window solution, and it is worth stating plainly because the research summary does not quantify it. Narrowing the window a cell is allowed to use generally means giving up some of the capacity available at the extremes. For a chemistry whose main selling point is energy density, that is not a free fix; the commercial question becomes how much usable energy survives once the cell is confined to the conditions that keep it stable.

That is the number the industry will be looking for as this work moves from a Nature paper toward cell qualification. Until it is published, the honest reading is that a mechanism has been identified and a mitigation demonstrated, not that a production-ready cell exists.

Where LMR would sit between LFP and NMC

The battery market has effectively split. LFP has taken the volume end — cheaper, cobalt-free, durable, and increasingly good enough for standard-range vehicles and stationary storage. High-nickel NMC holds the premium end, where range and pack weight justify the metals bill. LMR is pitched at the gap: nickel-and-cobalt-light like LFP on cost, but closer to NMC on energy.

For that positioning to matter, three things have to be true at once — the cost advantage has to survive manufacturing, the energy advantage has to survive the safe operating window, and the cell has to live long enough in a warranty period. Gas generation touched all three. Removing it, or containing it, does not settle the other questions, but it takes the chemistry out of the category of things that do not work at scale and into the category of things that need to be industrialised.

Who is affected

• Manganese suppliers: any credible path to mass-market LMR packs is a demand story for battery-grade manganese, a metal that has never had the offtake attention lithium or nickel received.
• Nickel and cobalt producers: the opposite exposure. Every LMR cell that displaces a high-nickel cell reduces intensity per kilowatt-hour of the two most expensive inputs.
• Automakers: a third chemistry option changes platform planning, because a mid-tier cell with usable range reshapes which trims need premium cells at all.
• LFP incumbents: the low-cost end of the market is where LMR would compete hardest, and where cost curves are already steep and well defended.

The market backdrop as the paper lands

The research surfaced into a soft session for US equities. As of the last trade at 15:26 GMT on 10 September 2026, the S&P 500 tracker (NYSEARCA: SPY) was at $759.34, down 0.40% from the prior close of $762.40, with a day range of $756.64–$760.11. The Nasdaq 100 fund (NASDAQ: QQQ) was at $711.07, off 0.73% against a $716.31 close and a $706.86–$712.06 range, and the Dow 30 vehicle (NYSEARCA: DIA) sat at $521.82, down 0.43% from $524.07.

The tech-heavy Nasdaq gauge lagging the broad market is the pattern that matters for anything battery-adjacent, since EV and clean-energy names tend to trade with the long-duration growth complex rather than with industrials. A single materials-science paper does not move that tape, and nothing in the research is a revenue event for anyone in 2026.

What to watch from here

Three markers will tell you whether this becomes a commercial programme rather than a citation. First, whether LG Energy Solution puts LMR on a public product roadmap with a date attached, which is the step that converts a laboratory result into a supply-chain commitment. Second, whether the voltage-window conditions hold in large-format cells over full automotive cycle life, not just in test cells — scale is where LMR has historically failed. Third, whether any automaker signs a development agreement around the chemistry, because cell makers do not industrialise a cathode without a customer.

Until then, treat the finding for what the researchers claim it to be: a mechanistic link between gas generation and voltage limits, and a set of conditions that suppresses it. That is a real obstacle removed. It is not yet a cheaper battery in a car.

Key facts

• Finding: Operating conditions that suppress gas generation in LMR cells, tied to charge and discharge voltage limits
• Partners: LG Energy Solution and Jongwoo Lim's team, Seoul National University Department of Chemistry
• Published in: Nature
• Market at last trade (15:26 GMT, 10 Sep 2026): SPY $759.34 (-0.40%); QQQ $711.07 (-0.73%); DIA $521.82 (-0.43%)

Frequently asked questions

What is an LMR battery?

LMR stands for lithium manganese-rich. It is a cathode chemistry that uses a high proportion of manganese and relatively little nickel and cobalt. The appeal is a combination of low raw-material cost, since manganese is cheap and abundant, and high energy density. Its commercialisation has been held back by stability problems in large cells.

Why does gas generation matter inside a battery cell?

Gas produced by side reactions between the electrolyte and the cathode builds pressure inside a sealed cell. In small laboratory cells the effect is tolerable, but in the large-format pouch and prismatic cells used in electric vehicles it causes swelling and raises safety and durability concerns. It is one of the main obstacles to using LMR chemistry in EV packs.

What did LG Energy Solution and Seoul National University actually find?

They identified a set of operating conditions that suppresses gas generation in LMR cells, and linked the gas behaviour to the charge and discharge voltage limits between which the cell is cycled. The joint work was conducted with Jongwoo Lim's team in Seoul National University's Department of Chemistry and published in the journal Nature.

How does LMR compare with LFP and NMC chemistries?

LFP is the low-cost, long-life, cobalt-free option that dominates standard-range vehicles and stationary storage but offers lower energy density. High-nickel NMC delivers higher energy density at higher metals cost. LMR is positioned between them: light on nickel and cobalt like LFP, but aiming for energy density closer to NMC.

Does this mean LMR batteries are ready for production?

No. The research identifies a mechanism and demonstrates conditions that suppress gas generation. Turning that into a commercial cell requires validation in large-format formats over automotive cycle life, a manufacturing process, and a customer. No production timeline was announced in the research.

Why would narrowing the voltage window be a trade-off?

Restricting how high a cell is charged and how deeply it is discharged usually removes access to some capacity at the extremes of the range. For a chemistry sold on energy density, that matters: the commercial question is how much usable energy remains once the cell is confined to the stable operating conditions.

Sources

• LG Energy Solution ties LMR battery gas generation to charge and discharge voltage limits — Charged EVs

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