Biomimetic hierarchical heterogeneity endows layered nanocomposite with excellent mechanical and electrical insulating properties.

Guan-Hua Yu, Xiao-Feng Pan, Wen-Long Xu, Yin-Bo Zhu, Si-Ming Chen, Shu-Hong Yu

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Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Guan-Hua YuDepartment of Chemistry, New Cornerstone Science Laboratory, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.ORCID 0009-0006-9072-6658

Xiao-Feng PanDepartment of Chemistry, New Cornerstone Science Laboratory, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.ORCID 0009-0002-8645-7003

Wen-Long XuState Key Laboratory of Nonlinear Mechanics, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China.ORCID 0000-0001-5943-3052

Yin-Bo ZhuState Key Laboratory of Nonlinear Mechanics, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China.ORCID 0000-0001-9204-9300

Si-Ming ChenDepartment of Chemistry, New Cornerstone Science Laboratory, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.ORCID 0009-0007-2469-2311

Shu-Hong YuDepartment of Chemistry, New Cornerstone Science Laboratory, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.ORCID 0000-0003-3732-1011

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aramid-based nanopapers with high mechanical and electrical insulating properties, together with high-temperature stability, are urgently desired for electrical safety but are challenging to be constructed. Notably, biological materials can adopt different nanoscale building blocks and regulate their spatial distribution to construct hierarchical heterostructure for overall performance optimization. Herein, inspired by biological hierarchical heterogeneity, integrating building blocks of two-dimensional rectorite nanosheet (RNS) and one-dimensional aramid nanofiber (ANF), we construct hierarchically heterostructured nanopapers with RNS-enriched bilateral sublayers and the ANF-enriched inner sublayer. The obtained 5-10-5 heterostructured nanopaper with 20-micrometer thickness through systematic regulation exhibits an impressive combination of breakdown strength (171 kilovolts per millimeter), corona resistance (18.3 hours), and mechanical properties, surpassing homostructured RNS-ANF nanopapers. The enhancement efficiency of corona resistance is orders of magnitude higher than that of reported insulating papers. The breakdown strength and corona resistance can be retained at high values in real-time temperature (up to 150°C). These properties make our biomimetic hierarchically heterostructured nanopaper highly competitive for applications.

Identifiers

PMID42566511

DOI10.1126/sciadv.aec6963

PMCPMC13450320

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