Faradion is pioneering the next generation of advanced, low-cost battery materials.
These novel materials employ sodium-ion (Na-ion) technology which when incorporated into batteries will be virtually indistinguishable, in terms of performance, from the leading lithium-ion (Li-ion) products currently on the market.
Na-ion batteries have a number of benefits compared to battery technologies already on the market, with the foremost advantage being the low cost. The sodium salts used to prepare these battery materials are highly abundant, coming from more sustainable sources than those of equivalent lithium salts, making them both cheap and easily obtainable. If compared to the equivalent salts used to make Li-ion batteries, the cost is approximately 1/10th of the cost.
This cost difference also has a significant impact on the electrolyte costs, particularly since the increased conductivity of Na-ion electrolytes (compared to Li-ion electrolytes) allows the use of lower concentrations of electrolyte salts.
Conventional Li-ion batteries work by shuttling lithium ions between an anode and a cathode. Scientists used to think that because sodium is larger than lithium, it will not be able to undergo this shuttling mechanism as easily. This, however, has been shown experimentally not to be the case. It is thought that this is because the mobility of the charge carrier (Na+) is sensitive to the structure of the active material and sodium’s interaction with the structure. This is supported by recent computational studies by Ceder et al. which indicate that the barriers for diffusion for Na+ ion migration can be lower than those of Li+ migration in the same structures.
Because sodium is heavier than lithium, people sometimes think that the energy density will be correspondingly lower. However, sodium makes up a very small proportion of the battery by mass and so, on a battery scale, the difference in energy density is minimal.
In addition, unlike lithium, sodium doesn’t form alloys with aluminium, allowing the use of aluminium foil as a current collector for both the positive and negative electrodes. Compared to copper, the conventional current collector on the negative electrode, aluminium is both lighter and cheaper.
By bringing low-cost, state-of-the-art Na-ion technology to the market, the Faradion team are accelerating the introduction of emerging technologies such as stationary storage (on and off-grid) and electric vehicles.
With its headquarters at the Innovation Centre in Sheffield, Faradion has gathered a team of experts in the battery industry, with an impressive array of skills and experience.
Faradion’s sodium-ion batteries can be tailored to both energy and power applications, depending on your requirements.
Stage of Technology
Faradion has now filed > 10 patent applications on its advanced technology, including materials and processing methods. As a result, Faradion’s IP portfolio covers several ranges of materials, providing many novel materials from which to choose, depending on the application required.