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首页> 外文期刊>Advanced energy materials >Hybrid Photothermal Pyroelectric and Thermogalvanic Generator for Multisituation Low Grade Heat Harvesting
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Hybrid Photothermal Pyroelectric and Thermogalvanic Generator for Multisituation Low Grade Heat Harvesting

机译：混合光热热电和热电发电机，用于多级低品位热收集

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摘要

Harvesting of prevalent low grade solar heat from otherwise wasted energy has received tremendous attention. However, extensive and continuous conversion remains challenging due to distributed nature of heat, limited temperature difference with the surroundings, ambient solar heat fluctuation, and night time period of darkness. Herein, a hybrid thermogalvanic and pyroelectric generator for multisituation structured/unstructured, static/dynamic, and dayight waste heat harnessing for continuous operation is reported. Powered by versatile thermal energy harvesting strategies, the hybrid photothermal generator is able to provide a more resilient and adaptive energy system to meet diversified energy demand, irrespective of unpredictable conditions. Taking advantage of the superior photothermal properties and electrical conductivity of carbon nanotubes/cellulose nanocrystals nanocomposite, together with the heat localization effect induced by sponge-confined electrolyte, simultaneous high thermogalvanic and pyroelectric performance is achieved with maximum outputs of 1.86 and 0.9 mW m(-2), respectively. Moreover, a scaled-up hybrid photothermal generator is successfully deployed on both land and water surfaces under natural sunlight, and also the feasibility of nighttime operation is verified. Such hybrid photothermal generators presented here offer an all-day clean energy solution as well as a feasible and cost-effective alternative to capitalize on solar energy and blue energy.
机译：从原本浪费的能源中收集普遍的低等级太阳热已经引起了极大的关注。然而，由于热量的分布特性，与周围环境的有限温度差异，周围太阳热波动以及黑暗的夜间时段，广泛且连续的转换仍然具有挑战性。在本文中，报道了用于多位置结构化/非结构化，静态/动态以及昼/夜余热利用的连续位置的混合热电和热电发电机。在多种热能收集策略的支持下，混合式光热发电器能够提供更具弹性和适应性的能源系统，从而满足各种能源需求，而无需考虑不可预测的条件。利用碳纳米管/纤维素纳米晶体纳米复合材料的优异光热性能和导电性，再加上海绵限制的电解质引起的热定位效应，可以同时获得高热电和热电性能，最大输出功率为1.86和0.9 mW m（- 2）。此外，在自然阳光下，在陆地和水面上成功部署了按比例放大的混合型光热发生器，并验证了夜间操作的可行性。本文介绍的这种混合光热发生器提供了全天的清洁能源解决方案，以及利用太阳能和蓝色能源的可行且具有成本效益的替代方案。

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