Macsen Energy Announces Sodium‑Ion Cell Milestone

On October 5, 2026, Macsen Energy Private Limited, based in Udaipur, India, disclosed that a laboratory‑tested sodium‑ion cell employing its proprietary Prussian White cathode material successfully completed 1,500 charge‑discharge cycles. The cell retained 90 % of its initial capacity after 1,000 cycles, while maintaining high coulombic efficiency, underscoring its suitability for long‑life energy‑storage applications.

CEO Commentary

Achal Agrawal, CEO of the Macsen Group and researcher on the project, stated that crossing 1,500 cycles with sustained capacity “is an important result for our team” and validates the promise of the technology for long‑life storage solutions.

Research Background

The initiative originated within Macsen Labs Group, a manufacturer of specialty chemicals and niche pharmaceutical ingredients. While developing Prussian Blue as an active pharmaceutical ingredient for treating radioactive contamination, the team explored its reduced, sodiated form—Prussian White—as a cathode material for sodium‑ion batteries. After three years of research into synthesis, refinement, and electrochemical testing, the effort was spun out into the separate entity Macsen Energy Private Limited.

Material and Manufacturing Potential

Prussian White can be produced at scale using commercially established raw materials sourced from India, Europe, China, and other countries. The upstream feedstock includes abundant industrial inputs such as natural gas, nitrogen, oxygen, and caustic soda. Macsen Energy has devised a proprietary synthesis process that delivers high‑yield, battery‑grade Prussian White with fewer processing steps, cost‑efficient production, and reduced environmental impact. The company has filed a patent application covering this manufacturing method.

Ongoing Development

The firm continues work on both cathode and anode materials, conducting coin‑cell and pouch‑cell testing, and advancing complementary battery components and full sodium‑ion cells. To support scale‑up, Macsen Energy has allocated 10,000 square metres of land for a dedicated Prussian White cathode‑material scale‑up facility and a sodium‑ion cell fabrication pilot line.