# Fraunhofer ISE battery electrode technology development

> Live situation record from CLSTR: https://clstr.news/situations/fraunhofer-ise-battery-electrode-technology-development
> Updated: 2026-09-14T06:27:43.000Z. Sources: 13. Developments: 2.

Researchers at the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) have developed a new battery electrode design aimed at increasing energy density by 10% to 15% without adding weight. This is achieved by increasing electrode coating thickness from the standard 100–200 µm to as much as 800 µm, which reduces the number of required current collectors and allows for more active energy-storing material.

The method is described as PFAS-free and solvent-free, and has been successfully demonstrated in lithium-ion, sodium-ion, and zinc-ion cells. Prototypes for lithium-ion pouch cells have been produced under conditions approximating industrial manufacturing.

## Timeline

### 2026-09-14: Battery technology advances see increased energy density and diagnostic initiatives

Battery technology advances include Fraunhofer researchers increasing electrode thickness to boost energy density by up to 15%, while OMV hosted free EV battery diagnostics in Slovakia for World EV Day.

3 sources. https://clstr.news/cluster/battery-technology-advances-see-increased-energy-density-and-diagnostic-initiatives

### 2026-09-08: Fraunhofer ISE develops battery design to increase energy density by 15%

Fraunhofer ISE researchers developed a new electrode design that increases battery energy density by up to 15% using thicker, PFAS-free coatings designed for cost-effective mass production.

10 sources. https://clstr.news/cluster/industrial-and-research-sectors-expand-production-and-battery-capacities

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Cite as: Fraunhofer ISE battery electrode technology development. CLSTR, https://clstr.news/situations/fraunhofer-ise-battery-electrode-technology-development