Stable CoO2 nanoscrolls with outstanding electrical properties

Hettler, Simon (Universidad de Zaragoza) ; Roy, Kankona Singha ; Arenal, Raúl ; Panchakarla, Leela S.

Resumen: Layered CoO2 is of great interest for its promising properties but is meta‐stable in its bulk form. CoO2 is synthesized by converting the quasi‐1D crystal structure of bulk Ca3Co2O6 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 CoO2 is found to crystallize in monoclinic form, similar to the related CaCoO2‐CoO2 misfit structure. Individual nanoscrolls are characterized electrically and show a p‐type semiconducting nature with a high current‐carrying capacity of 4·105 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.

Idioma: Inglés

DOI: 10.1002/admi.202400317

Año: 2024

Publicado en: Advanced Materials Interfaces 11, 31 (2024), 2400317 [7 pp.]
ISSN: 2196-7350

Factor impacto JCR: 4.4 (2024)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 79 / 239 = 0.331 (2024) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 174 / 460 = 0.378 (2024) - Q2 - T2

Factor impacto SCIMAGO: 1.154 - Mechanics of Materials (Q1) - Mechanical Engineering (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3
Financiación: info:eu-repo/grantAgreement/EC/H2020/881603/EU/Graphene Flagship Core Project 3/GrapheneCore3
Financiación: info:eu-repo/grantAgreement/EC/H2020/889546/EU/Properties of nanomaterials made from misfit-layered compounds revealed by electron microscopy and simulations/PROMISES
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-104739GB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)