Technion Research & Development Foundation Ltd

University of California

Korea Institute of Science and Technology

Avner Rothschild

Hen Dotan

Gideon Grader

Gennady Shter

Avigail Landman

Harry L Tuller

Jae-Min Hong

Dong-Young Kim

Il-Doo Kim

Seong-Mu Jo

Ian D Sharp

Gideon Segev

Provided are electrochemical cells and methods for generating hydrogen gas and oxygen gas.

System and method for generation of gases

A system and method for generating hydrogen gas from an aqueous solution are disclosed herein. The system comprises a compartment with a working electrode for reducing water in response to an applied voltage to generate hydrogen and a redox-active electrode capable of reversibly undergoing oxidation and reduction. The system may further comprise a second compartment with a working electrode for generating oxygen and redox-active electrode electrically connectable to the redox-active electrode in the first compartment. The method comprises applying a voltage between a working electrode and a redox-active electrode of a system described herein and/or between comprising a working electrode of one compartment and a working electrode of a second compartment of a system described herein.

Methods and system for hydrogen production by water electrolysis

This disclosure provides systems, methods, and apparatus related to a hybrid photo-electrochemical and photo-voltaic cell. In one aspect, device includes a substrate comprising a semiconductor, a transparent conductor disposed on the second surface of the substrate, a photoanode disposed on the transparent conductor, an electrolyte in electrical communication with the photoanode, and an electrode in contact with the electrolyte. The substrate is doped with a first n-type dopant. A first area of a first surface of the substrate is heavily doped with a first p-type dopant. A second area of the first surface of the substrate is heavily doped with a second n-type dopant. The second surface of the substrate is heavily doped with a second p-type dopant. The electrode is in electrical contact with the second area. The first area is in electrical contact with the second area through an electrical load.

Hybrid photo-electrochemical and photo-voltaic cells

A memory cell (C), including a first non-insulator (C) and a second non-insulator (C), different from the first non-insulator. The second non-insulator forms a junction (C) with the first non-insulator. The cell further includes a first electrode (C) which is connected to the first non-insulator and a second electrode (C) which is connected to the second non-insulator. At least one of the first and second non-insulators is chosen from a group consisting of a solid electrolyte and a mixed ionic electronic conductor and has an ionic transference number less than 1 and greater than or equal to 0.5.

Memory diodes

A method for fabricating an ultra-sensitive metal oxide gas sensor is disclosed, which comprises the steps of spinning a mixture solution including a metal oxide precursor and a polymer onto a sensor electrode to form a metal oxide precursor-polymer composite fiber; thermally compressing or thermally pressurizing the composite fiber; and thermally treating the thermally compressed or thermally pressurized composite fiber to remove the polymer from the composite fiber. Since the gas sensor includes a macro pore between nanofibers and a meso pore between nano-rods and/or nano-grains, gas diffusion and surface area can be maximized. Also, the ultra-sensitive sensor having high stability in view of mechanical, thermal, and electrical aspects can be obtained through rapid increase of adhesion between the metal oxide thin layer and the sensor electrode.

Ultra-sensitive metal oxide gas sensor and fabrication method thereof

Growing community of inventors

Haifa, Israel

Avner Rothschild