Macsen Labs, a long-standing manufacturer of specialty chemicals, has announced progress in sodium-ion battery research through the successful R&D-scale synthesis of high-performance Prussian White, a next-generation cathode material.
The company has filed a provisional patent for its proprietary synthesis process and is preparing for pilot-scale manufacturing.
Developed initially while studying Prussian Blue for medical applications, the company’s work shifted focus after identifying Prussian White as a promising candidate for sodium-ion battery cathodes. Over the past year, Macsen Labs has established an electrochemistry R&D facility and optimized its Prussian White formulation for battery use.
The material has demonstrated stable cycling performance exceeding 150 mAh/g under EV-relevant conditions, including room-temperature operation, high current densities, and limited lithium excess.
The resulting cathode offers performance comparable to that of lithium iron phosphate (LFP), a common material in cost-focused electric (EV) batteries. Prussian White’s open crystalline structure enables fast sodium-ion mobility and improved interfacial stability, key traits for energy storage systems that require both high performance and durability.
Importantly, sodium-ion batteries rely on widely available materials such as sodium and iron, and avoid critical minerals like lithium and cobalt. The use of aluminum instead of copper in current collectors also reduces raw material costs, factors that make sodium-ion technology well-suited to regional EV applications where affordability and supply chain independence are priorities.
Macsen’s current research focus includes cycle life extension, improved charge–discharge efficiency, and optimization of the full cell stack. The technology is being positioned for multiple energy storage applications, including battery energy storage systems (BESS) for renewable integration and various forms of electric mobility such as two-wheelers, auto-rickshaws, and short-range fleet vehicles.
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To support further development, the company is building a pilot-scale cell fabrication line and aims to demonstrate large-format sodium-ion cells using its Prussian White cathode by early 2026.
While lithium-based chemistries remain dominant in long-range EVs, sodium-ion batteries present a promising alternative for localized, lower-cost electric mobility and grid support, both of which are essential components of broader vehicle electrification strategies.
Filed Under: Batteries, Technology News