Cambridge Startup’s Breakthrough Electrolyte Could Triple Battery Energy Density

A Cambridge startup just cracked the code for cheaper, denser energy storage. Their organic electrolyte could revolutionize how we power the future.

, and Administrator

2026 January 22 . 1:33 PM

1 min read

The image shows a simple galvanic battery, consisting of several glass jars with text written on... — The image shows a simple galvanic battery, consisting of several glass jars with text written on them. The jars are cylindrical in shape and have a handle on the top for easy carrying. The text on the jars is written in a bold font and is likely a description of the battery's purpose.

Cambridge Startup’s Breakthrough Electrolyte Could Triple Battery Energy Density

A Cambridge-based startup is making strides in energy storage with a new type of organic electrolyte. Kodiaq Technologies has developed a solution for redox flow batteries that could triple the energy density of traditional vanadium-based systems. The company recently secured £850,000 in funding to push its technology forward.

Kodiaq’s electrolyte relies on pyridinium molecules, which can absorb at least one electron without reacting with oxygen. Unlike vanadium-based alternatives, these molecules store two electrons per unit, with potential for even greater capacity in the future. Current tests show energy storage of up to 50 watt-hours per litre, already surpassing conventional electrolytes.

The new formula also improves performance by reducing viscosity and speeding up electron-transfer reactions at the electrode. Another advantage is its reliance on common pharmaceutical feedstocks, avoiding rare or costly materials. Kodiaq does not plan to manufacture flow batteries itself but will partner with existing producers to scale up electrolyte production. Backed by £850,000 in late-2025 funding, the company aims to demonstrate its technology to the energy storage sector. Its first commercial sale is targeted for 2028, offering a drop-in replacement for existing redox flow battery systems.

Kodiaq’s electrolyte could significantly boost the efficiency of redox flow batteries. The technology promises higher energy density, faster reactions, and lower material costs. If successful, it may become a key solution for large-scale energy storage in the coming years.