TECHNOLOGY
NFPP+ Cells
Built for Energy Storage
Why Alsym
Na-Series?
Alsym’s Na-Series NFPP+ sodium-ion batteries offer these benefits:
Safety Profile
UL 9540a at the cell level
The unique Na-Series chemistry formulation is non-flammable at the cell level and doesn’t emit any dangerous toxic gases. This enables energy storage deployments in settings where fire concerns restrict lithium-ion deployments.
Cycle Life
>10,000 cycles
Na-Series batteries are built to handle deep discharge, with over 10,000 cycles or 20 year service life. Robust hard carbon and stable electrodes reduce the range of mechanisms causing degradation in Li-ion batteries.
Efficiency
>95% RTE
With greater than 95% round trip efficiency, Alsym Na-Series keeps operating expenses down and revenue opportunities up. It ensures you have the performance, cost and financial returns needed for demanding ESS projects.
Energy Density
250 Wh/L | 135 Wh/kg
Energy density matters for ESS not because of weight, but because it is a key driver of costs. Alsym’s NFPP+ batteries are designed for best-in-class energy density. They can also use the full depth of discharge without risk to the battery’s health or lifespan making 100% of the energy density usable.
Resource Abundance
1000x more abundant than lithium
Sodium is a resource more widely distributed than lithium and 1000x more abundant according to estimates, making it the optimal choice for long-term supply security.
0% State of Charge
Safe to Store and Transport
Na-Series batteries use aluminum current collectors that don’t face the same dissolution issues as the copper used in lithium-ion. Can be shipped or stored completely empty without damage, simplifying logistics.
Fast Charge and Discharge
2C | 4C
Unlike lithium, the Na-Series can charge and discharge up to 2C and 4C, respectively, without shortening system service life. This gives operators a highly flexible energy asset to meet changing demands over the life of the system.
Wide Operating Temperature Range
-40C to 60C
Performs reliably across a significantly wider ambient temperature range than Li-ion, making it the more robust choice for systems intended for hot, cold or exotic climates without the need for intensive battery management or expensive cooling.
What puts the + in NFPP+?
There are multiple types of sodium-ion battery chemistries, each with different capabilities. We saw that NFPP was best suited for ESS applications given its excellent cycling stability, but we also believed it could be better. “NFPP+” is a unique design including our proprietary formulation – both dopants and electrolyte – that enables all the benefits of NFPP plus non-flammability and best-in-class energy density.
| Na-ion Type | Layered Oxide | Prussian Blue Analogues | Polyanionic (NFPP) | Alsym Na-Series NFPP+ |
|---|---|---|---|---|
| Fire Risk | ||||
| Gas Toxicity | ||||
| Cycle Life | ||||
| Energy Density |
Na-ion Type
Layered Oxide
- Fire Risk
- Gas Toxicity
- Cycle Life
- Energy Density
Prussian Blue Analogues
- Fire Risk
- Gas Toxicity
- Cycle Life
- Energy Density
Polyanionic (NFPP)
- Fire Risk
- Gas Toxicity
- Cycle Life
- Energy Density
Alsym Na-Series NFPP+
- Fire Risk
- Gas Toxicity
- Cycle Life
- Energy Density
As the energy transition accelerates, Alsym Na-Series batteries can power Energy Storage Systems (ESS) that are particularly well suited to the following industries: