Work

Electrical Conductivity in Tetra- n -butylammonium Formate, Acetate, and Oxalate Semiclathrate Hydrates

Year: 2025

Type: article

Abstract: Semiclathrate hydrate (SCH) is a crystalline inclusion compound promising for use as an electroconductive and energy-storage material. In this study, the electrochemical properties of three single-crystalline tetra- n -butylammonium (TBA) carboxylate SCHs, namely, TBA-formate, TBA-acetate, and (TBA) 2 -oxalate SCHs, were investigated. All three SCHs exhibit Arrhenius-type conductivity, with TBA-formate SCH demonstrating the highest electrical conductivity. Electrochemical impedance analyses correlated the differences in carrier concentration among the SCHs with variations in electrical conductivity. These findings suggest that defect generation within the hydrogen-bonding network plays a significant role in enhancing the electrical conductivity, potentially serving as a key conduction mechanism in these materials. These results contribute to a deeper understanding of the potential uses of SCHs as advanced materials.

Source: ACS Applied Energy Materials

DOI: 10.1021/acsaem.5c02210

Authors: Riko Tsugaya, Jin Shimada, Takeshi Sugahara, Takayuki Hirai

Institutions: The University of Osaka, Japan Society for the Promotion of Science

Language: English

Topic: Crystallography and molecular interactions

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: Osaka University, Japan Society for the Promotion of Science