Electrochemistry on nanoporous electrodes: Revisit from the viewpoint of liquid-state theory

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03877
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic industrial materials
• Research Institution: Kyoto University
• Principal Investigator: Fukami Kazuhiro 京都大学, 工学研究科, 准教授 (60452322)
• Co-Investigator(Kenkyū-buntansha): 邑瀬 邦明 京都大学, 工学研究科, 教授 (30283633) ; 天野 健一 京都大学, 工学研究科, 助教 (30634191)
• Co-Investigator(Renkei-kenkyūsha): KINOSHITA Masahiro 京都大学, エネルギー理工学研究所, 教授 (90195339)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ポーラス電極 / 電気化学 / イオン移動

Outline of Final Research Achievements

The present study focuses on the enhancement of electrochemical reactions in nanoporous electrodes. We have studied especially from the viewpoint of mass-transport of ions in nanopores. Nanoporous silicon electrodes were utilized as the prototype porous electrode, and metal electrodeposition was conducted using the porous electrode. In platinum electrodeposition, we have revealed that the penetration of platinum complex anions were accelerated when using micropore, together with the accumulation of the ions in the confined nanopore. Such accelerated penetration was observed not only in platinum electrodeposition but also in other deposition systems and in electrolyte without metal ions. Thus, it was concluded that the accumulation and acceleration of ions in nanopore was generally achievable by choosing the appropriate pore size and charge density of ions. This conclusion is highly important for further precise control of electrochemical reactions in nanoporous electrodes.

Free Research Field

物理化学