Photochemical reaction device

Patent metadata

Field	Value
Publication number	US-2017268115-A1
Application number	US-201715616579-A
Country	US
Kind code	A1
Filing date	Jun 7, 2017
Priority date	Nov 20, 2012
Publication date	Sep 21, 2017
Grant date	—

Abstract

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.

First claim

1 - 16 . (canceled)

17 : A photochemical reaction device, comprising:
a laminated body comprising: 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, for separating charges with light energy; and an electrolytic tank comprising the laminated body, an oxidation reaction electrolytic tank disposed on the oxidation catalyst layer side and a reduction reaction electrolytic tank disposed on the reduction catalyst layer side, the oxidation reaction electrolytic tank and the reduction reaction electrolytic tank being separated by the laminated body, wherein the laminated body comprises a slit penetrating the laminated body, the slit moving ions between the oxidation catalyst layer side and the reduction catalyst layer side.

18 : The device of claim 17 , further comprising a passivation layer comprising a dielectric, formed on an interior surface of the slit.

19 : The device of claim 18 , wherein the passivation layer comprises one selected from the group consisting of TiO 2 , ZrO 2 , Al 2 O 3 , SiO 2 , and HfO 2 .

20 : A photochemical reaction device, comprising:
a laminated body comprising: 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, for separating charges with light energy; and an electrolytic tank comprising the laminated body therein, an oxidation reaction electrolytic tank disposed on the oxidation catalyst layer side and a reduction reaction electrolytic tank disposed on the reduction catalyst layer side, the oxidation reaction electrolytic tank and the reduction reaction electrolytic tank being separated by the laminated body, wherein the laminated body comprises a slit isolating the laminated body to a first laminated body and a second laminated body, the slit moving ions between the oxidation catalyst layer side and the reduction catalyst layer side.

21 : The device of claim 20 , further comprising a passivation layer comprising a dielectric, formed on an interior surface of the slit.

22 : The device of claim 21 , wherein the passivation layer comprises one selected from the group consisting of TiO 2 , ZrO 2 , Al 2 O 3 , SiO 2 , and HfO 2 .

23 : A photochemical reaction device, comprising:
a laminated body comprising: 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, for separating charges with light energy; and an ion exchange membrane laminated to the laminated body; an electrolytic tank comprising the laminated body, an oxidation reaction electrolytic tank disposed on the oxidation catalyst layer side and a reduction reaction electrolytic tank disposed on the reduction catalyst layer side, the oxidation reaction electrolytic tank and the reduction reaction electrolytic tank being separated by the laminated body and the ion exchange membrane, wherein the laminated body comprises an opening penetrating the laminated body, the opening moving ions between the oxidation catalyst layer side and the reduction catalyst layer side.

24 : The device of claim 23 , further comprises a passivation layer comprising a dielectric, formed on an interior surface of the opening.

25 : The device of claim 24 , wherein the passivation layer comprises one selected from the group consisting of TiO 2 , ZrO 2 , Al 2 O 3 , SiO 2 , and HfO 2 .

26 : The device of claim 23 , wherein the ion exchange membrane covers at least one of a surface of the oxidation catalyst layer and a surface of the reduction catalyst layer.

27 : The device of claim 23 , wherein the ion exchange membrane is provided between the reduction catalyst layer and the semiconductor layer.

28 : The device of claim 27 , wherein the ion exchange membrane supports the laminated body.

Assignees

• Toshiba Kk

Inventors

• Ono Akihiko
• Mikoshiba Satoshi
• Kitagawa Ryota
• Tamura Jun
• Kudo Yuki
• Huang Chingchun

Classifications

• C25B9/00 Primary

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• Y02E10/544

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• Y02E10/548

  Amorphous silicon PV cells · CPC title

• H01G9/20

  Light-sensitive devices · CPC title

• C25B11/03

  perforated or foraminous · CPC title