论文标题
从阳光，外太空和土壤中收集能量
Harvesting Energy from Sun, Outer Space, and Soil
论文作者
论文摘要
尽管太阳能系统提供了各种发电的方法，包括光伏，太阳能热力系统和太阳热电发电机，但在白天和夜间发电的能力仍然无需储能仍然具有挑战性。在这里，我们提出并验证一种通过日间太阳能加热来收集太阳能的策略，并通过辐射冷却来利用外层空间的寒冷，以使用商业热电模块在夜间发电。它可以每天24小时发电。我们通过实验表明，夜间的峰值密度为37 mW/m2，白天的峰值为723 mW/m2。准确预测设备性能的理论模型将得到开发和验证。 24小时发电的特征显示了离网和无电池照明和感应的巨大势能应用。
While solar power systems have offered a wide variety of electricity generation approaches including photovoltaics, solar thermal power systems, and solar thermoelectric generators, the ability of generating electricity at both the daytime and nighttime with no necessity of energy storage still remains challenging. Here, we propose and verify a strategy of harvesting solar energy by solar heating during the daytime and harnessing the coldness of the outer space through radiative cooling to produce electricity at night using a commercial thermoelectric module. It enables electricity generation for 24 hours a day. We experimentally demonstrate a peak power density of 37 mW/m2 at night and a peak value of 723 mW/m2 during the daytime. A theoretical model that accurately predicts the performance of the device is developed and validated. The feature of 24-hour electricity generation shows great potential energy applications of off-grid and battery-free lighting and sensing.
