Ultrahigh-Energy-Density Sorption Thermal Battery Enabled by Graphene Aerogel-Based Composite Sorbents for Thermal Energy Harvesting from Air
| Autor: | Tingxian Li, Jiaxing Xu, Jingwei Chao, Taisen Yan, S. Srinivasa Murthy, Larisa G. Gordeeva, Ruzhu Wang, Yuri I. Aristov, Pradip Dutta |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Sorbent Renewable Energy Sustainability and the Environment Graphene Energy Engineering and Power Technology Aerogel Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Thermal energy storage 01 natural sciences Energy storage 0104 chemical sciences law.invention Fuel Technology Chemical engineering Chemistry (miscellaneous) law Thermal Materials Chemistry 0210 nano-technology Thermal Battery |
| Zdroj: | ACS Energy Letters. 6:1795-1802 |
| ISSN: | 2380-8195 |
| Popis: | Sorption-based thermal storage has drawn considerable attention for sustainable and cost-effective thermal management and energy storage. However, the low sorption capacity of sorbents is a long-standing challenge for achieving high-energy-density sorption-based thermal storage. Herein, we demonstrate an ultrahigh-energy/power-density sorption thermal battery (STB) enabled by graphene aerogel (GA)-based composite sorbents for efficient thermal harvesting and storage with record performance. Scalable GA-based composite sorbents with high salt loading are synthesized by confined calcium chloride inside a GA matrix (CaCl2@GA), showing fast sorption kinetics and a large sorption capacity up to 2.89 g·g-1 contributed by the GA matrix and chemisorption-deliquescence-absorption of CaCl2. The STB realizes thermal charging-discharging via the multistep water desorption-sorption of CaCl2@GA sorbent with the humidity from air. Importantly, the lab-scale STB exhibits record energy density of 1580 Wh·kg-1 and power density of 815 W·kg-1 for space heating. Our work offers a promising low-carbon route for efficient thermal energy harvesting, storage, and utilization. © |
| Databáze: | OpenAIRE |
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