Cellark Powertech Private Limited is a pioneering battery technology company dedicated to advancing lithium-ion energy storage solutions through innovative silicon anode materials. Based in Cuttack, Odisha, India, the company was founded in 2017 and has spent over a decade refining its proprietary Porosil technology at IIT Bhubaneswar. This breakthrough process transforms aluminum-silicon alloys into porous silicon composite anodes, replacing conventional graphite anodes to deliver significant performance improvements.
Cellark’s technology achieves energy density gains of up to 30% over standard lithium batteries—and in specialized applications, improvements of over 100%—while cutting anode material requirements by more than 50%. The porous silicon structure minimizes silicon’s inherent volumetric expansion by 15%, ensuring longer battery lifespans. Enhanced carbon-coated composites further stabilize the silicon-graphite interface, balancing efficiency and durability without compromising existing production workflows. A planned pilot plant will soon produce enough silicon anode material annually to supply 600 electric vehicle battery packs, scaling up to meet the growing demand for high-performance batteries in EVs, consumer electronics, and renewable energy systems.
By leveraging abundant domestic silica resources and cost-effective manufacturing processes, Cellark strengthens India’s clean energy infrastructure while positioning itself as a global leader in sustainable energy storage solutions.
Battery Technology
At the core of Cellark’s innovations is its Porosil Technology, which generates porous silicon anodes using aluminum-silicon (Al-Si) alloys through selective leaching and galvanic coupling. This approach avoids the use of exotic materials, ensuring scalability and affordability while maintaining exceptional performance. Porosil anodes provide energy densities exceeding 550 mAh/gm, surpassing conventional graphite-based anodes.
The technology directly integrates into lithium-ion battery manufacturing systems, eliminating the need for costly redesigns. Silicon’s tendency to swell during charge cycles is mitigated by the porous structure, reducing volumetric expansion by over 15%. A proprietary carbon coating further optimizes bonding between silicon and graphite particles, enhancing cycle stability. These features reduce anode material usage by over 50% compared to traditional graphite-based designs, lowering production costs without sacrificing energy output.
Cellark’s pilot-scale facility, set to produce silicon anode material for 50 electric car batteries monthly, demonstrates the technology’s readiness for industrial adoption. This project underscores the company’s focus on resource efficiency: the Al-Si alloys used are widely accessible and eco-friendly, aligning with global trends toward sustainable battery production.
Recent Projects
In 2024, Cellark Powertech secured a ₹1.7 crore grant from India’s Ministry of Mines to accelerate its pilot-scale production facility. This initiative aims to scale Porosil-based anode material manufacturing to meet rising demands in the EV and energy storage sectors.
The company is also collaborating with Liloop—a digital product lifecycle management partner—to optimize production workflows and trace material supply chains. These advancements reflect Cellark’s proactive strategy to address emerging market needs, including faster charge times and higher energy densities for next-generation batteries.
Investors
Cellark’s early-stage development has been supported by strategic partnerships and public funding. The Indian Ministry of Mines provided a critical grant in 2024 to advance its pilot production facility, while seed capital from Indian Oil Corporation Limited further bolstered its R&D efforts. These investments reflect institutional confidence in Porosil Technology’s potential to revolutionize lithium-ion battery design and strengthen India’s position in the global clean energy race.
Business Details
Location: Cuttack, Odisha, India
Website: http://www.cellark.in
LinkedIn: https://www.linkedin.com/company/66726887
