Development of an electrochemical reactor for flexible control of anion defects

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K19079
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 36:Inorganic materials chemistry, energy-related chemistry, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Nakamura Takashi 東北大学, 多元物質科学研究所, 准教授 (20643232)
• Project Period (FY): 2022-06-30 – 2024-03-31
• Keywords: アニオン欠陥

Outline of Final Research Achievements

The purpose of this work is to develop an electrochemical reactor which enables us to dope hetero anionic species to the target material. As proof of concept, fluorine doping reactor was assembled by using solid fluoride-ion conductor, and fluoride-ion was successfully doped into the perovskite oxides. However, chlorine doping was not succeeded probably due to huge mismatch of ionic-size between oxide-ion and chloride-ion. Findings of this work are important guidelines for further development of new material exploration techniques.

Free Research Field

材料科学

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した電気化学リアクターは、原理的に従来的な材料合成技術では到達できない未探索領域に届く可能性を秘めたものである。本研究の成果「電圧印加によりイオンを駆動し、対象材料にドープする」という技術コンセプトを実証したことの学術的意義は大きい。将来的な材料イノベーションにつながる技術シーズを開発することができたと言える。