Applications for Pure Silicon Anodes:

Our Pure Silicon Anodes deliver improved battery performance to drones, consumer electronics and electric vehicles.


Choose LeydenJar Silicon Anodes for Better Battery Performance

In a rapidly electrifying world, high-performing batteries are an essential enabler for a wide range of new products or services. When designing these high-performing batteries, performance need to be guaranteed across a broad set of parameters: energy density (volumetric and gravimetric), cycle life, maximum (dis)charge rate, $/kWh, $/kW, shelve life, and many more.

By implementing our silicon anodes to your product, you will guarantee an overall improvement in your personal battery trade-off. While consumer electronics mostly benefit from a battery with a high cycle life and a fast-charge function, drones seek a more powerful battery that is also light-weighted. With LeydenJar silicon anodes, this trade-off is improved across the board. This opens up a whole new set of applications.


The demand for longer battery life, smaller batteries and enhanced flexibility in devices like smartwatches continues to grow. Current battery technology cannot keep up with the pace of development and is currently a blocker for the next generation of wearables. LeydenJar’s pure silicon anodes enable the continuation of the trend towards ever smaller and more powerful devices. It enables a battery size reduction of up to 40%, good for smaller devices with additional sensors and functionalities.

New VR devices with silicon anodes from LeydenJar

Think of AR/VR headsets or smart glasses – our pure silicon anode provides power when every gram and every centimeter counts. Due to its flexibility, our pure silicon anodes can be implemented in places where other batteries could break.

Say goodbye to bulky batteries and hello to sleek, innovative wearables that seamlessly integrate into your lifestyle.

Case study

Smartwatches are widespread nowadays, but for many people the increased size and weight of smartwatches over regular watches is still a blocker. With LeydenJar’s anodes, this can be solved by reducing the battery size by 40%.

Current smartwatch battery: 5.1mm
With LeydenJar anode: 3.1mm

This improvement allows smartwatches to be designed similarly sleek as their traditional counterpart, paving the way for further adaptation.

Thinner smartwatch with thinner battery with LeydenJar silicon anodes
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Frequently asked questions

Everything you need to know

Can LeydenJar’s silicon anodes be integrated into Lithium-ion batteries?

Yes, LeydenJar’s silicon anodes are compatible with off-the-shelve cathodes and electrolytes and can be integrated in current cell assembly lines on mass scale (and lab scale). The anode foil feeds directly into the cutting and stacking processes of the cell manufacturer.

What are the advantages of pure silicon anodes?

Using pure silicon as anode material allows much thinner layers to store the same amount of energy, meaning energy density is increased, charging rates are increased, and material usage is decreased compared with graphite anodes.

Can silicon anodes be easily and cost effective be implemented into existing battery production processes?

Silicon anodes are fully compatible with current battery production processes and can even reduce complexity of existing production processes by moving away from wet slurry coating to a dry PECVD process.

Can silicon anodes improve battery life?

The nano-structure of LeydenJar’s silicon anodes limits silicon swelling and prevents delamination. This tackles the main failure mechanisms of silicon anodes and increase the cycle life until 500 cycles at 80% capacity retention.

Are there challenges with silicon anodes?

Silicon swells when it’s lithiated, which normally prevents silicon to be used in batteries. LeydenJar’s silicon anodes are produced in a PECVD process, which forms porous columns on the copper substrate. This limits silicon swelling and makes durable and high-performing silicon anodes a reality.

Are silicon anodes compatible with off the shelf cathodes?

Yes. LeydenJar’s silicon anodes have been tested with NMC, LFP and LCO cathodes and works with different chemistries and recipes.

What is the energy density of batteries with LeydenJar’s pure silicon anodes?

1350 Wh/L or 390 Wh/kg (nominal stack level energy density)

Can the silicon based battery be utilized in every application?

Yes. Any application where currently Li-ion batteries are used, can benefit from silicon anodes. This includes consumer electronics, drones, EVs, and wearables. The exact properties of the silicon anode battery can be tuned to cater for the specific needs of the application.

Are the LeydenJar anodes made of 100% silicon?

Yes, 100%. We are not aiming for anything less.

How do I get these silicon anodes in my application?

Get in contact through our contact form and we will develop a battery catered to your needs.