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Hybrid Photothermal Pyroelectric and Thermogalvanic Generator for Multisituation Low Grade Heat Harvesting
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-10-14 , DOI: 10.1002/aenm.201802397
Tianpeng Ding 1 , Liangliang Zhu 1 , Xiao-Qiao Wang 1 , Kwok Hoe Chan 1 , Xin Lu 1 , Yin Cheng 1 , Ghim Wei Ho 1, 2, 3
Affiliation  

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 day/night 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.

中文翻译:

用于多级低品位热收集的混合光热热电和热电发电机

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差,周围太阳热波动以及黑暗的夜间时段,广泛而连续的转换仍然具有挑战性。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,以满足各种能源需求,而无需考虑不可预测的条件。-2。此外,在自然阳光下,在陆地和水面上成功部署了一个大型混合光热发电机,并验证了夜间运行的可行性。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。
更新日期:2018-10-14
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