气候变化领域集成服务门户(CCPortal): Solar thermal-driven capacitance enhancement of supercapacitors

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DOI	10.1039/c8ee01244j
	Solar thermal-driven capacitance enhancement of supercapacitors
	Yi F.; Ren H.; Dai K.; Wang X.; Han Y.; Wang K.; Li K.; Guan B.; Wang J.; Tang M.; Shan J.; Yang H.; Zheng M.; You Z.; Wei D.; Liu Z.
发表日期	2018
ISSN	17545692
起始页码	2016
结束页码	2024
卷号	11 期号:8
英文摘要	Solar energy is a renewable and abundant energy source that has myriad potential applications to be tapped. Energy storage devices often present diminishing performance at lower temperatures, and sometimes they even fail during cold weather; therefore, a renewable technology to spur such sluggish performance not only is important for a sustainable future but also may inspire new-concept devices such as ignition sensors. Here, under solar illumination, the capacitance, energy density and power density of supercapacitors are all largely enhanced owing to the photothermal effect. The supercapacitors employ three-dimensional hierarchical graphene as the electrodes, and show an absorption of >92.88% over the entire solar spectrum, a response time of <200 s, and a surface temperature change of ∼39 °C under 1 solar illumination (1 kW m-2). Under 1 solar illumination, the capacitance of the pseudocapacitor increases by ∼1.5 times, and the capacitance of the electric double-layer capacitor increases by ∼3.7 times. The mechanism is quantitatively analyzed and discussed. This work provides new insights into the applications of solar energy and offers new design options for the development of energy storage devices. © 2018 The Royal Society of Chemistry.
英文关键词	Absorption spectroscopy; Capacitance; Energy storage; Solar energy; Capacitance enhancement; Energy density; Lower temperatures; Photothermal effects; Power densities; Renewable technology; Solar illumination; Surface temperature changes; Supercapacitor; absorption efficiency; energy resource; energy storage; performance assessment; solar power; temperature effect; three-dimensional modeling
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190154
作者单位	Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; Department of Precision Instrument, Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, China; Beijing Graphene Institute, Beijing, 100095, China; Key Laboratory of Opto-electronics Technology, Ministry of Education, College of Electronic Science and Technology, Faculty of Information Technology, Beijing University of Technology, Beijing, 100022, China; Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100083, China; College of Biological and Chemical Engineering, University of Science and Technology Beijing, Beijing, 100083, China
推荐引用方式 GB/T 7714	Yi F.,Ren H.,Dai K.,et al. Solar thermal-driven capacitance enhancement of supercapacitors[J],2018,11(8).
APA	Yi F..,Ren H..,Dai K..,Wang X..,Han Y..,...&Liu Z..(2018).Solar thermal-driven capacitance enhancement of supercapacitors.Energy & Environmental Science,11(8).
MLA	Yi F.,et al."Solar thermal-driven capacitance enhancement of supercapacitors".Energy & Environmental Science 11.8(2018).