2026-10-06T18:38:08Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34020555 2026-09-29T02:44:43Z category_31817 category_36908 category_31853 category_31892 category_33464 portal_1005 item_type_6 month_year_09_2026

Liquid metal–integrated polyimide nanofibers for high-temperature triboelectric energy harvesting P Wu (4402270) K Shirvanimoghaddam (13393332) İ Özen (13405575) NA Choudhry (23579752) A Kooijman (25133832) PR Anusuyadevi (25133835) P Taheri (21090395) Minoo Naebe (13085016) Chemical sciences Condensed matter physics Inorganic chemistry Macromolecular and materials chemistry Materials engineering Science & Technology Technology Materials Science, Multidisciplinary Materials Science Triboelectric nanogenerators Polyimide nanofibers Liquid metal nanospheres High-temperature triboelectrics Self-powered sensors 7 Affordable and Clean Energy Triboelectric nanogenerators (TENGs) capable of operating at elevated temperatures remain constrained by charge dissipation and the poor thermal stability of conventional polymer dielectrics. Here, liquid metal (LM)-integrated polyimide (PI) nanofibers are developed as a thermally robust triboelectric platform for harsh-environment energy harvesting. Gallium-based LM nanospheres are incorporated into electrospun PI nanofibers through a sonication-assisted dispersion strategy, producing uniform composite membranes while preserving the fibrous architecture. Structural and surface analyses reveal that LM incorporation drastically modulates the local electrostatic environment of the fibers, consistent with enhanced interfacial polarization and charge trapping. Among the investigated formulations, the membrane containing 5 wt% LM delivers the optimal ambient triboelectric output, achieving an open-circuit voltage (Voc) of 8.40 V, improved capacitor charging behavior, and stable operation over 10,000 cycles. Under elevated-temperature testing, the output exhibited a positive temperature dependence, reaching a maximum Voc of 11.76 V at 200 °C before declining at higher temperatures, while measurable output was sustained up to 300 °C. 2027-01-01T00:00:00Z Text Journal contribution 10.26187/deakin.34020555 https://figshare.com/articles/journal_contribution/Liquid_metal_integrated_polyimide_nanofibers_for_high-temperature_triboelectric_energy_harvesting/34020555 CC BY 4.0