The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Nov. 29, 2021
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Energy Systems & Solutions Corporation, Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
The present embodiment provide a method for evaluating anion permeability of a graphene-containing membrane and also to provide a photoelectric conversion device employing a graphene-containing membrane having controlled anion permeability. The method comprises: preparing a measuring apparatus comprising an aqueous solution containing anions, a working electrode containing silver-metal, a counter electrode and a reference electrode; measuring the reaction current Ibetween the silver-metal and the anions while the electrode potential of the working electrode to the counter electrode is being periodically changed and driven under the condition that the electrodes are in contact with the aqueous solution;measuring the reaction current Iunder the condition that, instead of the working electrode, the graphene-containing membrane electrically connecting to the working electrode is in contact with the aqueous solution; andcomparing the currents Iand Ito evaluate anion-permeability of the graphene-containing membrane.