Counterelectrode for smart window and smart window

• US 5,724,176 A
• Filed: 09/29/1995
• Issued: 03/03/1998
• Est. Priority Date: 03/30/1993
• Status: Expired due to Term

• Current Assignee: Nippon Mitsubshi Oil Corporation
• Original Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Inventors: Kubo, Takaya, Nishikitani, Yoshinori, Kuroda, Nobuyuki
• Primary Examiner(s): Nelms, David C.
• Assistant Examiner(s): BEY, DAWN MARIE
• Application Number:
  US08/536,957
• Time in Patent Office: 886 Days
• Field of Search: 359/269, 359/271
• US Class Current: 359/271
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1555 Counter electrode

Abstract

A counterelectrode for a smart window contains a transparent substrate and a linear electrically conductive material formed on a surface of the transparent substrate. The electrically conductive material has a surface area of not less than 10 m² /g and electrical conductivity of not less than 10^-6 Ω^-1 ·cm^-1 at 25° C. A smart window contains an electrochromic electrode having a layer of an electrochromic material formed on its surface, and a layer of an electrolyte arranged between the counterelectrode and the electrochromic electrode and in contact with the layer of the electrochromic material.

Claims

1. A counterelectrode for a smart window comprising a transparent substrate and a linear electrically conductive material formed on a surface of said transparent substrate, said electrically conductive material having a surface area of not less than 10 m² /g and electrical conductivity of not less than 10^-6 Ω

^-1 ·

cm^-1 at 25°

C., wherein said linear electrically conductive material includes a plurality of parallel lines having the same line width, and

wherein said parallel lines having the same line width intersect one another at a pre-set angle.

2. The counterelectrode as claimed in claim 1 wherein an interval between neighboring lines of said parallel lines is 5 mm to 5 cm.

3. A counterelectrode for a smart window comprising a transparent substrate and a linear electrically conductive material formed on a surface of said transparent substrate, said electrically conductive material having a surface area of not less than 10 m² /g and electrical conductivity of not less than 10^-6 Ω

^-1 ·

cm^-1 at 25°

C., wherein said linear electrically conductive material includes a plurality of parallel lines having the same line width, and

wherein an interval between neighboring lines of said parallel lines is 1 mm to 10 cm.