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Efficient Output and Stability Triboelectric Materials Enabled by High Deep Trap Density
writer:Y. Zhang, J. He, Y. Gao,..., K. Liu, S. Nie, S. Wang, Q. Duan*, D. Liang*
keywords:Deep Trap, Tribocharge Storage, Energy Harvesting, Sustainable Triboelectric Material, Stability
source:期刊
Issue time:2024年

With the increasing global focus on sustainable materials, paper is favored for its biodegradability and low cost. Their integration with triboelectric nanogenerators (TENGs) establishes broad prospects for self-powered, paper-based triboelectric materials. However, these materials inherently lack efficient charge storage structures, leading to rapid charge dissipation. This study introduced a paper-based triboelectric material with efficient charge storage using deep traps assembled by a hydrogen bonds strategy. Compared to pure paper, the material increased the deep trap density by ~54 times, with an ~10 times higher dielectric constant at high frequency. TENG based on the material had a peak output power density ~45 times higher than paper-based TENG and maintained a stable voltage after 20,000 cycles. It also shows exceptional environmental stability and practicality with minimal voltage reduction in heat environments. This offers a practical and effective solution for powering and sustaining small electronic devices under extreme conditions.