Functional Nanomaterials Group

2022.01.25 Update

In the Functional Nanomaterials Group, we are developing new nanomaterials with diverse composition and structure, and exploring various promsing functionalities such as redox activity, catalytic activity, and ionic conduction property, etc. Specifically, we selectively and efficiently synthesize nanotubes and nanosheets that have tunable metal composition, charge density, and surface adsorption ability. By a rational control of electron/ion transfer reactions on atomic or molecular scale, we are aiming for high-capacity active materials, high-performance non-precious metal electrocatalysts and high ion-conductive solid electrolytes or membranes, etc. In the process, we are making full use of advanced techniques such as sophisticated electrochemical analysis, and atomic resolution electron microscopy with in situ characterization/manipulation capability.

Specialized research field

1. Creation of nanomaterials based on transition metal elements

Utilizing advanced synthesis protocols (CVD deposition, solution chemical synthesis, etc.) and advanced nanoanalysis techniques (atomic electron microscopy, etc.), new nanomaterials derived from layered compounds (oxides, hydroxides) such as 1D nanotubes and 2D nanosheets are rationally designed and synthesized.

2. Nanoarchitectonics for functionality exploration

We construct higher-order or hierarchical nanostructures/composites and/or ultrathin films/membranes by hetero-assembling and integrating nanomaterials. By taking advantage of hetero-interface synergistic effects and concerted interactions such as acid-base reaction, redox cycle, charge separation, anisotropic electron transport and ionic conduction, novel (opto)electronic and energy-related functions are explored.

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