Inexpensive thermochemical energy storage utilising additive enhanced limestone

Møller, Kasper T.; Ibrahim, Ainee; Buckley, Craig E.; Paskevicius, Mark

doi:10.1039/d0ta03080e

Cited by 60 publications

(48 citation statements)

References 44 publications

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“…The reaction kinetics in the former stage is much faster than that in the latter stage. This is mainly attributed to the diffusion coefficient of CO 2 through the CaO layer (0.3 cm 2 /s) that is markedly faster than that through the CaCO 3 product layer (0.003 cm 2 /s) . Moreover, the reaction kinetics of Ca100 and Ca100–Mn6–Fe12 decreases rapidly resulting from the accelerated sintering with an increasing cycle number.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Sun

Bai

et al. 2022

ACS Appl. Energy Mater.

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CaCO3/CaO materials possess the advantages of low cost, high energy storage density, and working temperature, which offer these materials the potential to be used in thermochemical energy storage systems for concentrated solar power plants. However, CaCO3/CaO materials possess poor antisintering and optical absorption abilities, largely limiting their practicability for direct solar utilization. In this study, binary ion doping of Fe/Mn and Zr-based stabilizer incorporation were simultaneously conducted to improve the cyclic thermal energy storage/release performance of CaCO3/CaO materials. The spectral absorbance of synthetic CaO-based composites (ranging from 77.8% to 84.0%) doped with binary ions of Fe/Mn is greatly increased in comparison to that of pure CaO (∼12.2%) due to the generation of black Ca2Fe2O5 and Ca4Mn3O10. The cyclic thermal energy storage/release performances of synthetic CaO-based composites were comparatively investigated under two thermal energy storage modes (CSP-N2 and CSP-CO2). The Zr-doped, CaO-based composites exhibit a cycling stability superior to those of Zr-free CaO-based composites due to the generated inert CaZrO3 with desirable antisintering ability, and the superiority is more prominent under CSP-CO2 mode. After 50 cycles, the CaO-based composite with a molar ratio of Ca:Zr = 100:6.7 exhibits a remarkably stable energy release density of 1.02 MJ/kg under CSP-CO2 mode, retaining 88.9% of its initial energy release density.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Sun

Bai

et al. 2022

ACS Appl. Energy Mater.

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“…The Al 2 O 3 /CeO 2 co-doping of CaO/CaCO 3 then also showed the benefit of enhancing the carbonation reactivity of the material, attributed to the presence of Ce 3+ ions on its surface. ZrO 2 was also considered as a stabilizing agent and compared to Al 2 O 3 [46]. CaCO 3 doped, via ball-milling, with ZrO 2 (40 wt%) or Al 2 O 3 (20 wt%) both presented excellent cyclic stability.…”

Section: Tces Systems Based On Carbonatesmentioning

confidence: 99%

Recent Advances in Thermochemical Energy Storage via Solid–Gas Reversible Reactions at High Temperature

André

Abanades

2020

Energies

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The exploitation of solar energy, an unlimited and renewable energy resource, is of prime interest to support the replacement of fossil fuels by renewable energy alternatives. Solar energy can be used via concentrated solar power (CSP) combined with thermochemical energy storage (TCES) for the conversion and storage of concentrated solar energy via reversible solid–gas reactions, thus enabling round the clock operation and continuous production. Research is on-going on efficient and economically attractive TCES systems at high temperatures with long-term durability and performance stability. Indeed, the cycling stability with reduced or no loss in capacity over many cycles of heat charge and discharge of the material is pursued. The main thermochemical systems currently investigated are encompassing metal oxide redox pairs (MOx/MOx−1), non-stoichiometric perovskites (ABO3/ABO3−δ), alkaline earth metal carbonates and hydroxides (MCO3/MO, M(OH)2/MO with M = Ca, Sr, Ba). The metal oxides/perovskites can operate in open loop with air as the heat transfer fluid, while carbonates and hydroxides generally require closed loop operation with storage of the fluid (H2O or CO2). Alternative sources of natural components are also attracting interest, such as abundant and low-cost ore minerals or recycling waste. For example, limestone and dolomite are being studied to provide for one of the most promising systems, CaCO3/CaO. Systems based on hydroxides are also progressing, although most of the recent works focused on Ca(OH)2/CaO. Mixed metal oxides and perovskites are also largely developed and attractive materials, thanks to the possible tuning of both their operating temperature and energy storage capacity. The shape of the material and its stabilization are critical to adapt the material for their integration in reactors, such as packed bed and fluidized bed reactors, and assure a smooth transition for commercial use and development. The recent advances in TCES systems since 2016 are reviewed, and their integration in solar processes for continuous operation is particularly emphasized.

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“…Thermochemical energy storage (TCES) is considered as a promising energy storage technology due to its high energy density and negligible energy loss, which is suitable for long-term storage and long-distance transportation. − Among the different TCES technologies, calcium looping (CaL) energy storage has attracted widespread attention. − CaL energy storage uses nontoxic and environmentally friendly CaCO 3 as its raw material, which is inexpensive, widely available, and has a high energy density (∼3.2 GJ/m 3 ), making it suitable for large-scale industrial applications. − …”

Section: Introductionmentioning

confidence: 99%

Thermochemical Energy Storage of Concentrated Solar Power by Novel Y₂O₃-Doped CaO Pellets

Chen

Leng

et al. 2021

Energy Fuels

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Reliable energy storage technology is a prerequisite for the efficient utilization of solar energy, among which thermochemical energy storage based on calcium looping emerges as a promising candidate. In this work, antisintering Y2O3 was doped into CaO to prepare a novel composite for energy storage. Benefiting from the homodispersity of Y2O3 in active CaO, which was proved by both scanning electron microscopy and transmission electron microscopy analyses, the novel composite exhibited high energy storage density and excellent cyclic stability. 35 wt % is considered as the optimal addition amount of Y2O3 because of its highest energy storage density of 1986 kJ/kg after 10 cycles. CaY35 not only showed outstanding extended cyclic performance but also maintained a satisfactory energy storage density of about 1400 kJ/kg under harsh calcination conditions due to its increased Brunauer–Emmett–Teller specific surface area and enriched porosity through the N2 adsorption analysis. In addition, the extrusion-spheronization method was employed to granulate CaY35 powders into spherical pellets. The extrusion force during the granulation process led to the destruction of the sorbent structure to some extent, resulting in a slight decline in pellet performance. However, the granulation endowed the pellets with excellent mechanical strengths and they lost only 4.28 wt % of their initial mass after 7000 rotations in a fragility tester, which was of great significance for their cyclic practical applications.

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Inexpensive thermochemical energy storage utilising additive enhanced limestone

Abstract: A thermochemical energy storage capacity retention of up to 90% over 500 cycles is achieved in cheap and abundant limestone.

Cited by 60 publications

References 44 publications

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Recent Advances in Thermochemical Energy Storage via Solid–Gas Reversible Reactions at High Temperature

Thermochemical Energy Storage of Concentrated Solar Power by Novel Y₂O₃-Doped CaO Pellets

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Inexpensive thermochemical energy storage utilising additive enhanced limestone

Abstract: A thermochemical energy storage capacity retention of up to 90% over 500 cycles is achieved in cheap and abundant limestone.

Cited by 60 publications

References 44 publications

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Evaluation of Thermochemical Energy Storage Performance of Fe-/Mn-Doped, Zr-Stabilized, CaO-Based Composites under Different Thermal Energy Storage Modes

Recent Advances in Thermochemical Energy Storage via Solid–Gas Reversible Reactions at High Temperature

Thermochemical Energy Storage of Concentrated Solar Power by Novel Y2O3-Doped CaO Pellets

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Thermochemical Energy Storage of Concentrated Solar Power by Novel Y₂O₃-Doped CaO Pellets