Kabushiki Kaisha Toshiba

Chingchun Huang

Satoshi Mikoshiba

Ryota Kitagawa

Jun Tamura

Akihiko Ono

Yuki Kudo

Yoshitsune Sugano

Eishi Tsutsumi

According to one embodiment, a photochemical reaction system comprises a COproduction unit, a COabsorption unit, and a COreduction unit. The COreduction unit comprises a laminated body and an ion transfer pathway. The laminated body comprises an oxidation catalyst layer producing Oand Hby oxidizing HO, a reduction catalyst layer producing carbon compounds by reducing COabsorbed by the COabsorption unit, and a semiconductor layer formed between the oxidation catalyst layer and the reduction catalyst layer and develops charge separation with light energy. The ion transfer pathways make ions move between the oxidation catalyst layer side and the reduction catalyst layer side.

Photochemical reaction system

According to one embodiment, a photochemical reaction device includes: a solar cell; an electrolytic tank having a first tank storing a first solution including an oxidant and/or reductant of a redox medium and a second tank storing a second solution including water and/or proton; a first electrode set in the first tank, connected to a positive electrode of the solar cell through a first switching element, and connected to a negative electrode of the solar cell through a second switching element; and a second electrode set in the second tank, connected to the positive electrode of the solar cell through a third switching element, and connected to the negative electrode of the solar cell through a fourth switching element.

Photochemical reaction device

Disclosed here is a method of operating a chemical reaction device that includes the steps of determining the presence of surplus power more than a demand, and determining the presence of solar energy.

Chemical reaction device

A photoelectrochemical reaction device of an embodiment includes: a first stack including a first electrode, a second electrode, and a photovoltaic layer provided therebetween; a second stack including a third electrode electrically connected to the first electrode, a fourth electrode electrically connected to the second electrode, and an ion migration layer provided therebetween; and an electrolytic solution tank storing a first electrolytic solution in which the third electrode is immersed and a second electrolytic solution in which the fourth electrode is immersed. One of the third and fourth electrodes causes an oxidation reaction, and the other of the third and fourth electrodes causes a reduction reaction. The third and fourth electrodes have ion permeability. An area of the second stack is larger than that of the first stack.

Photoelectrochemical reaction device

According to one embodiment, a reduction catalyst includes a charge collector having a metal layer on a surface; and a modified organic molecule bound to a surface of the metal layer and containing a quaternary nitrogen cation.

Reduction catalyst and chemical reactor

According to one embodiment, an oxidation electrode includes: a collector; an oxidation catalyst formed on the collector; and a modified organic molecule which is bonded to the surface of the oxidation catalyst, and comprises a cationic functional group.

Oxidation electrode and photoelectrochemical device

A photo-electrochemical cell of an embodiment includes: a first electrode which has a transparent conductive film provided on a first surface of a photoelectric conversion layer; a first catalyst layer provided on the first electrode; a second electrode provided on a second surface of the photoelectric conversion layer; and a second catalyst layer provided on the second electrode. The first catalyst layer has a plurality of catalyst parts disposed on the first electrode and a transparent dielectric part disposed in a gap between the plurality of catalyst parts.

Photo-electrochemical cell, manufacturing method of photo-electrochemical cell, and photo-electrochemical reaction device

According to one embodiment, a photochemical reaction device comprises a laminated body and an ion transfer pathway. A laminated body comprises an oxidation catalyst layer for producing oxygen and protons by oxidizing water a reduction catalyst layer for producing carbon compounds by reducing carbon dioxide and a semiconductor layer formed between the oxidation catalyst layer and the reduction catalyst layer and developing charge separation with light energy. An ion transfer pathway moves ions between the oxidation catalyst layer side and the reduction catalyst layer side.

Growing community of inventors

Tokyo, Japan

Chingchun Huang