Design of functional nanostructures with high electrochemical performance

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04149
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Kitami Institute of Technology
• Principal Investigator: KIM KYUNG HO 北見工業大学, 工学部, 教授 (70608471)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: ナノ構造体 / 水酸化物 / 酸化物 / エネルギー貯蔵デバイス

Outline of Final Research Achievements

Supercapacitors based on the Faradaic oxidation/reduction reactions of cost-effective transition metal (cobalt (Co), nickel (Ni), copper (Cu), etc.) oxides/hydroxides electrode materials are promising energy-storage devices because of their safety, cost-effectiveness, and eco-friendliness. In this research project, it has been designed new transition metal composite hydroxide (or oxide) nanostructures using simple and facile wet chemical solution deposition method, and investigated their electrochemical reaction mechanism. The morphology and crystalline phase of hierarchical composite hydroxide (or oxide) nanostructures could be easily tunable by controlling the solution conditions (molar ratios, surfactants, etc), growth temperature & time, and post-annealing treatment.

Free Research Field

機能性ナノ材料

Academic Significance and Societal Importance of the Research Achievements

従来の成膜法により得られた粉末状のナノ構造体を用いた場合、ナノ構造体と添加物の混合比率に関する条件は確立されている一方、どのようなナノ構造体がスーパーキャパシタの電極材料として最適なのかはまだ知られていない。特に、不透明な添加物の使用はその応用展開を制限する。本研究では、添加物フリー複合ナノ構造体を基板上に直接成膜させることで、ナノ構造体の優れた電気化学的特性を要する分野への応用展開も可能である。