Stable CoO<sub>2</sub> Nanoscrolls with Outstanding Electrical Properties

Abstract Layered CoO 2 is of great interest for its promising properties but is meta‐stable in its bulk form. CoO 2 is synthesized by converting the quasi‐1D crystal structure of bulk Ca 3 Co 2 O 6 via a hydrothermal treatment. The resulting nanostructures are predominantly nanoscrolls with very thin walls, which exhibit long‐term stability. A detailed structural investigation reveals that the CoO 2 is found to crystallize in monoclinic form, similar to the related CaCoO 2 ‐CoO 2 misfit structure. Individual nanoscrolls are characterized electrically and show a p‐type semiconducting nature with a high current‐carrying capacity of 4·10 5 A cm −2 and an extremely high breakdown voltage of up to 270 kV cm −1 . The results demonstrate the possibility to stabilize meta‐stable materials in low‐dimensional forms and a promising application of the nanoscrolls as interconnect in high‐voltage electronic circuitry.

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Publication Details

Journal
Advanced Materials Interfaces
Published
2024-08-22
DOI
https://doi.org/10.1002/admi.202400317
Citations
7
Primary Topic
Advancements in Battery Materials
Type
article
Field-Weighted Citation Impact
1.46

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article

Stable CoO2 Nanoscrolls with Outstanding Electrical Properties

Simón Hettler, Kankona Singha Roy, Raúl Arenal, Leela S. Panchakarla
7 citations
Advanced Materials Interfaces
Advancements in Battery Materials
1.46
article

Stable CoO2 Nanoscrolls with Outstanding Electrical Properties

Simón Hettler, Kankona Singha Roy, Raúl Arenal, Leela S. Panchakarla
article en
7 citations

Abstract

Abstract Layered CoO 2 is of great interest for its promising properties but is meta‐stable in its bulk form. CoO 2 is synthesized by converting the quasi‐1D crystal structure of bulk Ca 3 Co 2 O 6 via a hydrothermal treatment. The resulting nanostructures are predominantly nanoscrolls with very thin walls, which exhibit long‐term stability. A detailed structural investigation reveals that the CoO 2 is found to crystallize in monoclinic form, similar to the related CaCoO 2 ‐CoO 2 misfit structure. Individual nanoscrolls are characterized electrically and show a p‐type semiconducting nature with a high current‐carrying capacity of 4·10 5 A cm −2 and an extremely high breakdown voltage of up to 270 kV cm −1 . The results demonstrate the possibility to stabilize meta‐stable materials in low‐dimensional forms and a promising application of the nanoscrolls as interconnect in high‐voltage electronic circuitry.

Advanced Materials InterfacesVol. 11(31)
Indian Institute of Technology Bombay (IN), Universidad de Zaragoza (ES), Fundacion Agencia Aragonesa para la Investigacion y el Desarrollo (ES), Instituto de Nanociencia y Materiales de Aragón (ES)
Ministerio de Ciencia, Innovación y Universidades, Graphene Flagship, European Commission, Department of Science and Technology, Ministry of Science and Technology, India, Indian Institute of Technology Bombay, Universidad de Zaragoza, Department of Science and Technology, Government of West Bengal, Gobierno de Aragón, Horizon 2020 Framework Programme, Science and Engineering Research Board, Agencia Estatal de Investigación, Industrial Research and Consultancy Centre, H2020 Marie Skłodowska-Curie Actions
Openalex Percentile: Top 18%
Advancements in Battery Materials
1.46
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