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Updated: Oct 11, 2026

Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring
Published on: November 14, 2025
Janus-Structured Composites for Energy Harvesting, Thermal Management, and Superior Triboelectric Output Performance
Jia-Qi Lang1, Zi-Qi Lv1, Li-Jun Luo1
1MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Research Center of Biomass Clean Utilization, College of Materials Science and Technology, Beijing Forestry University, Beijing100083, PR China.
Abstract:
The intensifying global energy crisis and the steady advancement of the dual-carbon strategy have imposed increasingly stringent requirements on zero-energy temperature control technologies and renewable energy utilization systems across domains, such as building energy conservation, flexible electronics, and sensing. Herein, a multifunctional Janus-structured CA/PVDF/MXene (CPM) composite film was fabricated via electrospinning using a blended solution of cellulose acetate (CA) and polyvinylidene fluoride (PVDF) as an electrospinning precursor. The composite achieves subambient cooling of approximately 7.0 °C outdoors, demonstrating excellent daytime radiative cooling performance. The CPM-based triboelectric nanogenerator (TENG) exhibits outstanding electrical output, with an open-circuit voltage of 101.3 V, a short-circuit current of 3.9 μA, and a transferred charge of 34.9 nC. Moreover, the CPM-TENG shows excellent self-powered sensing capabilities, accurately detecting mechanical signals including human motion and handwriting traces, highlighting promising potential for applications in flexible wearable electronics. The composite possesses mechanical properties (200% enhancement in tensile strength), photothermal conversion capability (achieving a surface temperature of 64.6 °C under 0.8 W/cm2 irradiation), and Joule thermal response (reaching 156.4 °C at 6 V). This study provides a systematic design for multifunctional flexible electronic devices that integrate passive intelligent temperature regulation, mechanical energy harvesting, and high-sensitivity self-powered sensing.
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