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Tunable anisotropic structural aramid triboelectric aerogels enabled by magnetic manipulationa
來源:段青山副教授個人網站 發布日期:2024-08-30
作者:Mingchao Chi, Song Zhang, Tao Liu, Yanhua Liu, Bin Luo, Jinlong Wang, Chenchen Cai, Xiangjiang Meng,
關鍵字:magnetic alignment, self-powered, thermal charge stability, triboelectricaerogels, triboelectric nanogenerators
論文來源:期刊
具體來源:Advanced Functional Materials
發表時間:2023年
Material designs for wearable sensors are increasingly important due to variable application scenarios and environmental disturbances. The high temperatures pose a significant challenge to the performance of sensing materials. The reasonable anisotropic structure in materials is recognized as a promising approach to address this challenge. Precise control of the orientation of the material remains difficult, owing to the entropy effect. In this work, a tunable anisotropic triboelectric aerogel via an in situ coupled magnetic alignment and protonation reduction strategy is demonstrated. The designed orientation with a fitting degree of 98% can effectively suppress electron thermionic emission, which enables the surface charge density to reach 75 μC m?2 at 300 °C. Such a perfect coordination between self-powered sensing and thermostability innovates multifunctional wearable sensing design at high temperatures, allowing aramid-based aerogel to be a candidate for advanced sensing materials for applications in the military and aerospace fields.
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