Energy & Climate

Jaan Leis

Carbon-based ultracapacitor electrodes

EstoniaEvidence: high confidenceChecked July 2026

Jaan Leis co-invented carbon-based materials for ultracapacitor electrodes, components that store and release electrical energy rapidly. The work enabled more capable capacitors for transport and grid uses, and the European Inventor Award profile documents the technology's industrial performance and recognition.

01

What Jaan did

Co-invented carbon materials used as high-performance ultracapacitor electrodes.

02

Why it matters

European Inventor Award recognition credits the carbon materials with improving ultracapacitor performance.

03

Living-status check

A University of Tartu doctoral dissertation accepted in June 2025 identifies Leis as a supervisor and credits his guidance, direct evidence of current academic work.