Macroscopic heat release in a molecular solar thermal energy storage system

Wang, Zhihang; Roffey, Anna; Losantos, Raúl; Lennartson, Anders; Jevric, Martyn; Petersen, Anne Ugleholdt; Quant, Maria; Dreos, Ambra; Wen, Xin; Sampedro, Diego; Börjesson, Karl; Moth‐Poulsen, Kasper

doi:10.1039/c8ee01011k

Cited by 148 publications

(210 citation statements)

References 26 publications

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“…Both showed a positive effect on reducing the backconversion half-life at room temperature. [Cu(CH 3 CN) 4 ]PF 6 has a very low solubility in toluene, being active for various MOST systems, including norbornadiene/quadricyclane derivatives 11 and dihydroazulene/vinylheptafulvene couples. 20,49 For the AZO1-cis compound, a back-conversion reaction rate of up to 30 s À1 was calculated at room temperature of 25 C (up to 6 Â 10 6 times higher than a reaction rate of 5 Â 10 À6 s À1 without the catalyst at 25 C; see Fig.…”

Section: Resultsmentioning

confidence: 99%

Demonstration of an azobenzene derivative based solar thermal energy storage system

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Demonstration of an azobenzene derivative based solar thermal energy storage system

et al. 2019

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“…2020, 7,1902590 Reproduced with permission. This route can overcome some of the drawbacks of the direct electrospinning route discussed in Section 2.1, such as poor dispersion of MOF particles in the polymers, blockage of MOF pores, or reduced mechanical properties, such as high brittleness due to MOF loading.…”

Section: Surface Decoration Of Polymer Nanofibers With Mofsmentioning

confidence: 99%

“…Selected examples are discussed in the following section, including the use of specific fabrication techniques. 2020, 7,1902590 In situ growth approaches for the fabrication of MOF nanofibers. Wu et al [55] chose HKUST-1, ZIF-8, MIL-101(Fe), and Zn 2 (bpdc) 2 (bpee) to demonstrate the effectiveness of MOF seeding in nanofibers to initiate subsequent intimate growth of MOF particles inside and on the surface of a MOF-seeded polymer nanofiber structure by secondary growth to achieve a continuous, uniform, and defect-free MOF membrane.…”

Section: In Situ Growth Of Mofs On Polymer Nanofibersmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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“…Apart from metal oxides, CNT, polymers, and composite materials (Chai et al, 2016;Chen, Qiu, Kia, et al, 2012;Scalia et al, 2018Scalia et al, , 2019Z. Wang, Roffey, et al, 2019;Yang et al, 2014), fiber-based materials like graphene and solid carbon sphere (SCS) have emerged as potential candidate to replace conventional electrodes in wearable energy conversion and storage devices.…”

Section: Flexible Pscs Based On Dssc and Scsmentioning

confidence: 99%

Photosupercapacitors: A perspective of planar and flexible dual functioning devices

Chirauri

Dehury

Chaudhary

2020

WIREs Energy & Environment

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The development of technologies to convert solar energy and store it into a usable form of energy at a massive scale is a major thrust of research worldwide. Therefore, suitable energy storage options/devices are being sought after to store electrical energy generated by solar cells through harvesting solar radiation. The integration of solar energy converting device with supercapacitors (SCs) as a single device-called as photosupercapacitor, has great potential to power wearable and portable electronics. This dual functioning device stores the harvested energy electrochemically to provide an alternative source of power, may address the pressing issues for storage of the generated electrical energy. Different configurations to integrate solar cells and storage devices are being explored, and the integration of solar cells, particularly third-generation, with SCs can provide high-power conversion efficiencies. Nonetheless, the exploration of flexible electronics to meet the demand for wearable devices that operate continuously without an external power supply is highly desired. In this article, we have thoroughly discussed the developments of integrated devices based on third-generation planar and flexible solar devices, which include: dye-sensitized, quantum dot sensitized, organic, perovskite using SCs as energy-storage devices. Besides, the emphasis is also given on integrated flexible or wearable systems as self-charging and self-powered integrated systems. The present perplexing issues and their research perspectives are also elaborated to stimulate the advancement of such integrated devices in the upcoming years.

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Macroscopic heat release in a molecular solar thermal energy storage system

Abstract: The development of solar energy can potentially meet the growing requirements for a global energy system beyond fossil fuels, but necessitates new scalable technologies for solar energy storage.

Cited by 148 publications

References 26 publications

Demonstration of an azobenzene derivative based solar thermal energy storage system

Demonstration of an azobenzene derivative based solar thermal energy storage system

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Photosupercapacitors: A perspective of planar and flexible dual functioning devices

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