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We study electrochemical materials, mostly metal oxides and hydroxides, and develop new methods, processes and devices for energy conversion and storage. Our groundbreaking developments include:

E-TAC water splitting: High-efficiency (98.7%HHV) membraneless decoupled water splitting in a two-stage chemical – electrochemical cycle (Nature Energy 2019). This invention has led to the foundation of H2Pro, an Israeli start-up company that develops hydrogen generators for hydrogen refueling stations.

Decoupled water splitting: Using Ni(OH)2/NiOOH charge storage auxiliary electrodes, we decouple the hydrogen and oxygen evolution reactions and divide the electrolytic cell into separated hydrogen and oxygen cells (Nature Materials 2017). This allows centralized hydrogen production in a solar field with distributed photoelectrochemical cells that produce oxygen (Joule 2020).

Resonant light trapping in ultrathin films: Combining wave optics and ray optics in harmony to boost the light-matter interaction and photon harvesting yield of ultrathin semiconductor photo-absorbers (Nature Materials 2013).