Capacitance enhancement by ion-laminated borophene-like layered materials

Atomically flat two-dimensional networks of boron are attracting attention as post-graphene materials. An introduction of cations between the boron atomic layers can exhibit unique electronic functions that are not achieved by neutral graphene or its derivatives. In the present study, we propose a synthesis strategy for ion-laminated boron layered materials in a solution phase, which enables the preparation of analogs by changing the alkali-metal species. The introduction of large cations extends the thermal range of the liquid-crystal phases because of weakened ionic interactions between borophene-like layers. An investigation of the capacitance of ion-laminated structures revealed a 10<sup>5</sup>-fold or better increase in capacitance when the borophene-like materials were introduced between electrodes. That is difficult for general materials since the dielectric constant of common materials is below several thousand.

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Publication Details

Journal
Nature Communications
Published
2025-01-27
DOI
https://doi.org/10.1038/s41467-024-55307-6
Citations
3
Primary Topic
Conducting polymers and applications
Type
article
Field-Weighted Citation Impact
1.82

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article

Capacitance enhancement by ion-laminated borophene-like layered materials

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3 citations
Nature Communications
Conducting polymers and applications
1.82
article

Capacitance enhancement by ion-laminated borophene-like layered materials

Jun Kawaguchi, Hirona Nakamura, Ryota Imai, Tetsuya Kambe, Shoichi Kubo, Kaori Akagami, Akiyoshi Kuzume, Kimihisa Yamamoto, Masahiro Katakura, Hinayo Taya, Atsushi Shishido, Hiroaki Iino, Takuya Yamashita, Shigeyuki Masaoka, Masataka Yoshida
article en
3 citations

Abstract

Atomically flat two-dimensional networks of boron are attracting attention as post-graphene materials. An introduction of cations between the boron atomic layers can exhibit unique electronic functions that are not achieved by neutral graphene or its derivatives. In the present study, we propose a synthesis strategy for ion-laminated boron layered materials in a solution phase, which enables the preparation of analogs by changing the alkali-metal species. The introduction of large cations extends the thermal range of the liquid-crystal phases because of weakened ionic interactions between borophene-like layers. An investigation of the capacitance of ion-laminated structures revealed a 10<sup>5</sup>-fold or better increase in capacitance when the borophene-like materials were introduced between electrodes. That is difficult for general materials since the dielectric constant of common materials is below several thousand.

Nature CommunicationsVol. 16(1)
Osaka City University (JP), Japan Science and Technology Agency (JP), Yamamoto Hospital (JP), Life Science Institute (JP), Institute for Future Engineering (JP), University of Yamanashi (JP), The University of Osaka (JP)
Sumitomo Foundation, Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, Exploratory Research for Advanced Technology
Openalex Percentile: Top 18%
Conducting polymers and applications
1.82
DOIOpen Access PDFOpenAlex
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