Starting from materials
Own the foundation of your performance
QuanVol controls two critical materials in house: Field-driven functional coating separator and Composite solid-state electrolyte. They are both the source of QuanVol solid-state cell performance and Supplied to cell makers. An existing liquid-electrolyte line completes the solid-state upgrade by switching materials with light equipment modification, no teardown required.
Two materials, one field-driven interface system
The separator handles the pathway for ion migration across the interface, and the electrolyte handles matching the interfacial electric field. Used together they form the material foundation of the field-driven solid-state battery.
Field-driven functional coating separator
Definition: QuanVol's battery separator modified with a ferroelectric functional coating. Built on the intrinsic field formed by ferroelectric spontaneous polarization, it actively drives efficient lithium-ion migration, raising ionic conduction and interface stability without changing the core structure of the battery.
- Mechanism: Ferroelectric spontaneous polarization, then a built-in field, then faster lithium salt dissociation, faster interfacial migration and a more uniform Li-ion flux
- Compatible lines: Fits liquid, hybrid and solid-state lines
- Retrofit approach: The existing liquid-electrolyte line is retained; switch the separator with light equipment modification, no new plant needed
- Supply form: Roll form, confirmed against the customer line width and roll length
Composite solid-state electrolyte
Definition: A solid-state electrolyte developed to match the field-driven interface system: production-ready, stable and broadly compatible, not tied to a single oxide, sulfide or polymer route.
- Mechanism: Matches the field-driven interface system, rebuilding the interfacial field and eliminating the ion depletion zone, cutting interface impedance by 1 to 2 orders of magnitude
- Compatible chemistries: Compatible with oxide, polymer and sulfide solid-state systems as well as liquid upgrade systems
- Key figures: Composite electrolyte room-temperature ionic conductivity of 8.4 × 10⁻⁴ S/cm (measured at 100 kg pilot-scale modification)
- Supply form: Powder or slurry, confirmed against the customer process route
How the material system fits the three main solid-state routes
Field-driven materials are an enabling layer underneath, not a new electrolyte route. They stack onto all three mainstream solid-state systems, addressing the most typical interface problem of each.
Polymer solid-state
Plan: ferroelectric filler and relaxor ferroelectric polymer matrix.
Result: Raises the dielectric constant and promotes lithium salt dissociation, increasing free Li⁺ by 72%.
Oxide solid-state (LATP and others)
Plan: an interfacial ferroelectric modification layer.
Result: Suppresses the space charge layer, cutting interface impedance by more than an order of magnitude.
Sulfide solid-state
Plan: nano ferroelectric particle interfacial doping.
Result: Widens the electrochemical window and suppresses high-voltage decomposition.
Measured material-system-level data
The following is material-system-level data. Citations must state the applicable material category and test conditions, and it must not be presented as the specification of any particular cell model.
Field-driven material: before and after
Material-system level · measured in the QuanVol system| Parameter | Before modification | After modification | Change |
|---|---|---|---|
| Ion conduction capability | 0.62 mS/cm | 0.84 mS/cm | +35% |
| Lithium-ion transference number | 0.40 | 0.65 | +63% |
| NCM811 half-cell first-cycle efficiency | 89.2% | 91.7% | +2.5 percentage points |
| Capacity retention after high-temperature cycling at 55℃ | 38.9% | 72.1% | +85% |
| Free Li-ion concentration | Baseline | Improved | +72% |
The data is at the material and system level, intended for technical content and customer technical discussions, not as a performance figure for any specific cell model.
Oxide LATP modification comparison
System-level data, available for citation on request| Parameter | Before modification | After modification | Change |
|---|---|---|---|
| Room-temperature ionic conductivity | 0.95 × 10⁻⁴ S/cm | 1.26 × 10⁻⁴ S/cm | +32% |
| Critical current density | 0.52 mA/cm² | 0.89 mA/cm² | +71% |
| LFP full-cell cycling | 200 cycles, 72% capacity retention | 700 cycles, 88% capacity retention | Cycle life up 3.5x |
| Room-temperature ionic conductivity of composite electrolyte | 8.4 × 10⁻⁴ S/cm (measured at 100 kg pilot-scale modification) |
|---|---|
| Interface impedance improvement | Reduced by 1 to 2 orders of magnitude |
| System-level safety and temperature capability | No fire and no explosion under nail penetration; −40°C to 80°C operating range |
The figures above are measured data from the QuanVol system. Any citation must state the applicable material category and test conditions, with no cross-material extrapolation.
Who these two materials are for
The materials business serves manufacturers that have production lines and chemistry systems and want higher performance. Separator and electrolyte can be supplied separately or as a set.
| Customer types | Typical needs | Where QuanVol comes in |
|---|---|---|
| Cell makers with liquid-electrolyte lines | Wants solid-state or semi-solid-state without building a new line | Light legacy line retrofit: new separator plus matching electrolyte with light equipment modification, no new plant |
| Cell makers (semi-solid and solid-state lines) | High interface impedance, insufficient ionic conductivity, fast cycle fade | Solved at the interface; material-system-level data is available and open to sample validation |
| Cell makers raising safety levels | Nail safety and a wide temperature range are hard requirements | No fire and no explosion under nail penetration; −40°C to 80°C operating range |
| Battery brands / pack makers | Wants in-house material capability but lacks the technology base | QuanVol supplies materials plus a matching plan, with one consistent specification and coordinated supply |
Material specifications, supply cadence and commercial terms are confirmed one on one according to the customer line type, target chemistry and volume.
Sampling and validation process
The data can be reproduced on your own line and test bench. Once the process is complete you receive not just a parameter table, but a set of verifiable conclusions.
Materials business FAQ
How does your separator differ from ordinary ceramic-coated separators?
The mechanism differs. Ordinary coatings address heat resistance and mechanical strength; the field-driven coated separator uses ferroelectric functional materials whose spontaneous polarization creates an intrinsic field that actively drives lithium-ion migration. The benefit lands on ionic conduction and interface stability, not heat stability alone.
If I switch to your separator, how much equipment has to change?
The existing liquid-electrolyte line is retained, and switching the separator with light equipment modification is enough, with no new plant. Scope is confirmed against your line conditions, and we can start with a fit assessment.
Which route is your electrolyte, oxide or sulfide?
None of them on its own. The composite solid-state electrolyte is not tied to a single oxide, sulfide or polymer route; it works through field-driven interface matching. Tell us your current system and we will provide a matching plan.
Can you provide test reports?
Yes. Material-system-level data can be produced during sample validation, with test conditions and conclusions documented.
Can you guarantee stable supply?
QuanVol is responsible for one consistent quality specification for materials, and the same specification is supplied to the same standard. Delivery cadence is agreed in the commercial stage based on your volume and time window.
How is pricing calculated?
Pricing is quoted per product and volume. Give us your line details, volume and time window, and the commercial proposal will include the quotation.
Want to test the materials on your own line?
Send us your line type, target chemistry, current materials and pain points. QuanVol provides specification advice and the expected performance direction, and arranges samples.