Hydrovoltaic power generators that convert water-nanomaterial interactions into electricity represent a promising route for sustainable energy harvesting.However,most previous studies have relied on non-stretchable pl...Hydrovoltaic power generators that convert water-nanomaterial interactions into electricity represent a promising route for sustainable energy harvesting.However,most previous studies have relied on non-stretchable planar designs,requiring continuous water flow or ionic solutions.Here,we present a fully stretchable hydrovoltaic cell(FSHC)with a parallel double-helix configuration of neat and oxidized carbon nanotube(CNT)fibers wound around an elastomeric core.This winding-locked double-helix architecture ensures mechanical robustness and stable electrical properties under strain.When immersed in quiescent deionized water,the FSHC generates~0.31 V and~22.4µA/cm^(2),maintaining reliable performance up to 200%strain.To demonstrate its potential in wearable applications,the FSHC is integrated into a fabric glove.Moreover,multiple FSHCs connected in series or parallel provide sufficient power to drive a twisted CNT fiber actuator.This study introduces a deformable hydrovoltaic platform for fiber-based energy harvesters,broadening their applicability to wearable electronics and self-powered actuation.展开更多
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.NRF-RS-2021-NR060086,No.RS-2023-00240008,and No.RS-2025-00560512)the Industrial Technology Innovation Program(Alchemist Project)(RS-2025-02634714)funded by the Ministry of Trade,Industry&Energy(MOTIE),Koreathe Institute of Information&communications Technology Planning&Evaluation(IITP)grant funded by the Korea government(MSIT)(No.RS-2025-02263277).
文摘Hydrovoltaic power generators that convert water-nanomaterial interactions into electricity represent a promising route for sustainable energy harvesting.However,most previous studies have relied on non-stretchable planar designs,requiring continuous water flow or ionic solutions.Here,we present a fully stretchable hydrovoltaic cell(FSHC)with a parallel double-helix configuration of neat and oxidized carbon nanotube(CNT)fibers wound around an elastomeric core.This winding-locked double-helix architecture ensures mechanical robustness and stable electrical properties under strain.When immersed in quiescent deionized water,the FSHC generates~0.31 V and~22.4µA/cm^(2),maintaining reliable performance up to 200%strain.To demonstrate its potential in wearable applications,the FSHC is integrated into a fabric glove.Moreover,multiple FSHCs connected in series or parallel provide sufficient power to drive a twisted CNT fiber actuator.This study introduces a deformable hydrovoltaic platform for fiber-based energy harvesters,broadening their applicability to wearable electronics and self-powered actuation.
