二维碲化钴压电摩擦发电机
Two-dimensional Cobalt Telluride as Piezo-tribogenerator
摘要：
二维（2D）材料已被证明在能量收集方面是有效的。在这里，我们报告利用废热发电通过结合压电和摩擦电性能的二维碲化钴（CoTe 2）。压电摩擦电纳米发电机（PTNG）在1 N力下产生约5V的开路电压，并且在305-363 K范围内的温度效应显示出四倍的能量转换效率提高。二维压电摩擦发电机具有最大工作电压约10 V、响应时间快、响应度高等特点。密度泛函理论被用来获得进一步的见解和验证的实验结果。我们的研究结果可能会导致使用来自各种热源的2D材料的能量收集方法，并从电子设备中耗散废热。
英文摘要：
Two-dimensional (2D) materials have been shown to be efficient in energy harvesting. Here, we report utilization of waste heat to generate electricity via combined piezoelectric and triboelectric property of 2D Cobalt Telluride (CoTe2). The piezo-triboelectric nanogenerator (PTNG) produced an open-circuit voltage of ~5V under 1N force and the effect of temperature in the 305-363 K range shows a four-fold energy conversion efficiency improvement. The 2D piezo-tribogenerator shows excellent characteristics with a maximum voltage of ~10V, fast response time and high responsivity. Density functional theory was used to gain further insights and validation of the experimental results. Our results could lead to energy harvesting approaches using 2D materials from various thermal sources and dissipated waste heat from electronic devices.
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