Stabilization of K2CO3 in vermiculite for thermochemical energy storage

Shkatulov, Alexandr; Houben, J.M.; Fischer, Hartmut; Huinink, H.P.

doi:10.1016/j.renene.2019.11.119

Cited by 93 publications

(38 citation statements)

References 29 publications

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“…The achieved energy density for this composite material was 211 kWh/m 3 , with a high water absorption of 0.40 g/g. Shkatulov et al [97] prepared 69 wt% K 2 CO 3 with expanded vermiculite matrices as a potential material for energy storage systems. They reported that the energy density was 0.7-0.9 GJ/m 3 with a water uptake of 0.4-1.5 g/g.…”

Section: Composite Materialsmentioning

confidence: 99%

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

et al. 2021

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Sorption thermochemical storage systems can store thermal energy for the long-term with minimum amount of losses. Their flexibility in working with sustainable energy sources further increases their importance vis-à-vis high levels of pollution from carbon-based energy forms. These storage systems can be utilized for cooling and heating purposes or shifting the peak load. This review provides a basic understanding of the technologies and critical factors involved in the performance of thermal energy storage (TES) systems. It is divided into four sections, namely materials for different sorption storage systems, recent advances in the absorption cycle, system configuration, and some prototypes and systems developed for sorption heat storage systems. Energy storage materials play a vital role in the system design, owing to their thermal and chemical properties. Materials for sorption storage systems are discussed in detail, with a new class of absorption materials, namely ionic liquids. It can be a potential candidate for thermal energy storage due to its substantial thermophysical properties which have not been utilized much. Recent developments in the absorption cycle and integration of the same within the storage systems are summarized. In addition, open and closed systems are discussed in the context of recent reactor designs and their critical issues. Finally, the last section summarizes some prototypes developed for sorption heat storage systems.

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Section: Composite Materialsmentioning

confidence: 99%

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

et al. 2021

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“…Therefore, in case of this very prominent reaction system, but also in case of other materials with a similar behaviour, a lot of research is spent on suitable options for persistent stabilization of the particle size over a multitude of reaction cycles [17][18][19][20][21].…”

Section: The Principle Beyond Thermochemical Heat Storage and Conversionmentioning

confidence: 99%

“…Hence, the next discharging is strongly hindered since the reaction bed is almost impermeable for the gaseous reaction partner. Various works concerning these types compounds present approaches for their persistent stabilization by embedding them in porous carriers as porous carbon [34,35], vermiculite [18], zeolithes [36] or silica gel [37].…”

Section: Application Specified Requirementsmentioning

confidence: 99%

Background and Strategies for Identification and Design of Materials for Thermochemical Energy Storage and Conversion

2020

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“…The study found that the salt hydrate K 2 CO 3 has good reversibility, a low price and non-corrosiveness. Combining K 2 CO 3 and porous matrix expanded vermiculite (EVM) into a composite material can highlight the advantages of K 2 CO 3 [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Preparation of K2CO3/Expanded Vermiculite Composite Energy Storage Material

Zou

Yue

et al. 2022

Materials

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Thermochemical adsorption energy storage is a potential energy utilization technology. Among these technologies, the composite energy storage material prepared by K2CO3 and expanded vermiculite (EVM) shows excellent performance. In this paper, the influence of the preparation process using the impregnation method and vacuum impregnation method on K2CO3/EVM composite material is studied. The preparation plan is further optimized with the solution concentration and the expanded vermiculite particle size as variables. In the experiment, mercury intrusion porosimetry (MIP) is used to measure the porosity and other parameters. Additionally, with the help of scanning electron microscopy (SEM), the morphological characteristics of the materials are obtained from a microscopic point of view. The effects of different preparation parameters are evaluated by comparing the experimental results. The results show that the K2CO3 specific gravity of the composite material increases with the increase of the vacuum degree, up to 70.440 wt.% (the vacuum degree is 6.7 kPa). Expanded vermiculite with a large particle size (3~6 mm) can carry more K2CO3, and content per cubic centimeter of K2CO3 can be as high as 0.466 g.

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Stabilization of K2CO3 in vermiculite for thermochemical energy storage

Cited by 93 publications

References 29 publications

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

Background and Strategies for Identification and Design of Materials for Thermochemical Energy Storage and Conversion

Experimental Research on the Preparation of K2CO3/Expanded Vermiculite Composite Energy Storage Material

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