Ready to supercharge your understanding of batteries? This interview with SparkNano unveils a game-changing technology poised to revolutionize lithium-ion battery performance: spatial atomic layer deposition (ALD). Get ready to dive deep into how this innovative approach is set to reshape the future of energy storage.
We'll be hearing from Dr. Paul Poodt, CTO and co-founder, and Alexander Bouman, Business Development Manager, who will illuminate how spatial ALD is not just improving battery capabilities but also making industrial-scale production a reality.
Let's meet the experts!
- Alexander Bouman: Bringing his chemical engineering expertise to the table, Alexander is focused on commercializing spatial ALD solutions. He guides customers through the journey from initial research and development to full-scale manufacturing, leveraging his experience from Philips Lighting and Thermo Fisher Scientific.
- Dr. Paul Poodt: As CTO and co-founder, Dr. Poodt is also an Associate Professor at Eindhoven University of Technology. His research has been pivotal in developing spatial ALD for various industrial applications, including batteries, photovoltaics, and flexible electronics.
Why is spatial ALD the talk of the town in the lithium-ion battery world?
Dr. Poodt explains that spatial ALD tackles critical challenges in lithium-ion batteries, such as electrode degradation, limited cycle life, and interface instability. The technology applies ultra-thin, uniform coatings that stabilize the crucial electrode-electrolyte interfaces, mitigating issues like dendrite formation, all without sacrificing performance.
So, what specific battery issues can these coatings solve?
As battery technology advances with high-capacity materials like silicon anodes and high-nickel cathodes, stability becomes a major hurdle. Spatial ALD coatings act as protective layers, significantly improving electrochemical performance and extending the lifespan of the batteries. The process is also compatible with temperature-sensitive materials, a crucial factor in modern electrode design.
But here's where it gets controversial... How does SparkNano's spatial ALD process differ from conventional ALD?
Alexander Bouman points out that the key difference lies in scalability. Traditional ALD is slow and operates in vacuum chambers, making it impractical for high-volume production. Spatial ALD, however, separates precursors in space instead of time, enabling continuous roll-to-roll processing at atmospheric pressure. This allows for speeds up to 100 meters per minute, a critical requirement for battery manufacturing.
Let's talk about lithium fluoride coatings. Why are they so important?
Dr. Poodt highlights lithium fluoride's exceptional ability to passivate both anode and cathode interfaces. These coatings are chemically stable and ionically conductive, improving cycle life and Coulombic efficiency. SparkNano, in collaboration with Air Liquide, has developed a new process using a precursor called LIEBE, enabling fast, low-temperature, and clean deposition of LiF films without hazardous gases.
How do they ensure these coatings are evenly distributed on porous electrodes?
Dr. Poodt confirms the conformality of the coatings using SEM-EDS on graphite anodes, observing fluorine signals on every particle surface, even deep within the electrode layer. This uniform coverage is essential for optimal performance. Achieving this with a fast, atmospheric-pressure plasma process is a significant achievement.
And this is the part most people miss... What kind of performance gains can we expect from these coatings?
Alexander Bouman states that they typically see a 10% improvement in capacity retention, which can double the battery's lifespan in real-world scenarios. For heavy-duty applications like buses and trucks, this could reduce the levelized cost of energy storage (LCOES) by up to 40%, offering substantial economic and environmental benefits.
How does SparkNano help customers scale up from the lab to the factory floor?
Alexander Bouman explains that they offer a seamless transition from their LabLine R&D tool to their SparkNano Omega roll-to-roll platform. Both tools use the same spatial ALD core technology, ensuring that processes developed in the lab can be directly transferred to large-scale production. This modular, scalable approach saves time, cost, and risk for their customers.
Are they exploring other materials beyond lithium fluoride?
Dr. Poodt confirms that they are working on coatings such as aluminum oxide, niobium oxide, titanium oxide, and even lithium phosphates like LiPON. These are highly relevant for conventional and solid-state batteries. They are also exploring doped LiF films to further enhance ionic conductivity.
What's the future outlook for spatial ALD in battery manufacturing?
Alexander Bouman sees spatial ALD becoming a cornerstone in next-generation battery production. It offers high throughput, low material waste, and excellent film quality. Their mission is to help manufacturers implement this technology in high-volume settings, from consumer electronics to EVs and grid-scale storage.
About Dr. Paul Poodt
Dr. Paul Poodt is the Chief Technology Officer at SparkNano and a part-time Associate Professor at Eindhoven University of Technology. He earned his PhD in Physics from Radboud University Nijmegen, with a specialization in thin film deposition and surface science. He is widely regarded as a pioneer in spatial atomic layer deposition (ALD), with a focus on scalable coatings for clean energy technologies. Before co-founding SparkNano, he held senior research positions at TNO and Holst Centre. Dr. Poodt has published extensively and holds multiple patents in the field of ALD and nanocoatings.
About Alexander Bouman
Alexander Bouman is Business Development Manager at SparkNano, where he leads the commercialization of spatial ALD solutions across the battery and clean energy sectors. He holds a Master of Science in Chemical Engineering from Eindhoven University of Technology. Before joining SparkNano, he held technical and commercial roles at Philips Lighting and Thermo Fisher Scientific, where he focused on electron microscopy and nanomaterials. At SparkNano, he helps bridge the gap between R&D and industrial-scale deployment of ALD systems, supporting clients through technology integration and process scaling.
Final Thoughts
Spatial ALD is clearly a promising technology. Do you think this will revolutionize the battery industry? What other innovations do you think are on the horizon? Share your thoughts in the comments below!
