High-performance CaO-based composites synthesized using a space-confined chemical vapor deposition strategy for thermochemical energy storage

Han, Rui; Gao, Jihui; Wei, Siyu; Su, Yanlin; Su, Chengzhi; Li, Junfeng; Liu, Qingling; Qin, Yukun

doi:10.1016/j.solmat.2019.110346

Cited by 40 publications

(13 citation statements)

References 49 publications

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“…Pure CaO and nano silica doped systems (molar ratio 1:1) were compared, and a shift in reaction temperature was observed [42]. The pure material performed better between 750 and 925 • C, while for the silica-doped samples the decarbonation happened at lower temperatures, between 700 and 800 • C. Al 2 O 3 has been demonstrated to efficiently stabilize CaO/CaCO 3 [43] . Thanks to using a space-confined chemical vapor deposition (CVD) method, Han et al [43] presented a new way to synthesize a Al 2 O 3 (5 mol%)-CaO composite which demonstrated high stability over 50 calcination/carbonation cycles as compared to samples using SiO 2 or TiO 2 as inert additives.…”

Section: Tces Systems Based On Carbonatesmentioning

confidence: 98%

“…The pure material performed better between 750 and 925 • C, while for the silica-doped samples the decarbonation happened at lower temperatures, between 700 and 800 • C. Al 2 O 3 has been demonstrated to efficiently stabilize CaO/CaCO 3 [43] . Thanks to using a space-confined chemical vapor deposition (CVD) method, Han et al [43] presented a new way to synthesize a Al 2 O 3 (5 mol%)-CaO composite which demonstrated high stability over 50 calcination/carbonation cycles as compared to samples using SiO 2 or TiO 2 as inert additives. The space-confined CVD method allowed CaO crystalline grains to be coated with inert oxide nanoparticles, as high contribution to thermal stability of the composite material.…”

Section: Tces Systems Based On Carbonatesmentioning

confidence: 99%

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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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Section: Tces Systems Based On Carbonatesmentioning

confidence: 98%

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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“…However, the inherent intermittency and unstable nature of solar energy lead to discontinuous power production. Therefore, the low-cost, large-scale energy storage technologies are vital preconditions to promote the development of CSP plants . Currently, thermal energy storage (TES) technologies utilize the sensible heat stored in conductive oil (∼400 °C) or molten salts (∼565 °C) to achieve continuous power generation in CSP plants .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermochemical Energy Storage Stability of CaO-Based Composite Pellets Incorporated with a Zr-Based Stabilizer

Zhou

Liu

et al. 2021

Energy Fuels

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Calcium looping is a potential thermochemical energy storage technology applied in a high-temperature working window. However, CaCO3/CaO materials are prone to encounter severe sintering, exhibiting poor thermal energy storage/release stability. To improve the thermochemical energy storage stability, different amounts (5, 15, and 30 wt %) of a Zr-based stabilizer were incorporated into CaCO3/CaO materials. Moreover, the graphite-casting method was adopted to prepare the Zr-stabilized, CaO-based composite pellets aiming to improve the practicability. The incorporation of the Zr-based stabilizer can effectively resist the sintering of CaO-based composite powders during a high-temperature precalcination process. It is mainly attributed to the large amounts of generated, nanosized CaZrO3 grains possessing desirable antisintering ability evenly distributed within the composites. Particularly, the Zr-stabilized, CaO-based composite pellets containing 30 wt % of CaZrO3 possess a relatively high compression strength of 2.28 ± 0.87 MPa and a desirable thermal storage density of 1.15 GJ/t after 20 cycles. Additionally, the graphite-casted, Zr-stabilized, CaO-based composite pellets have potential to be applied in a large-scale thermochemical energy storage system because the graphite-casting method is easy to be scaled-up.

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“…Additionally, the adoption of renewable energies to replace traditional fossil fuels aiming to meet the growing demand for energy is another potential route [9,10]. Concentrated solar power (CSP) can potentially accomplish largescale and continuous electricity generation due to the implementation of massive energy storage overcoming the intermittency of solar radiation [10]. Consequently, a large number of pilot and commercial CSP plants are being constructed around the world to support the development of CSP [11].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, extensive efforts have been made to improve the anti-sintering ability of CaCO 3 /CaO thermal energy storage materials, such as incorporation of structure stabilizers [10,12,16,17], mechanical activation [26][27][28], or thermal activation [29]. The route to promote the solar absorption of CaCO 3 via adding black metallic oxides was also proposed during direct light absorption mode, enhancing the efficiency of heat utilization of the integrated CaL-CSP system [14,15].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical Energy Storage Performances of Steel Slag‐Derived CaO‐Based Composites

et al. 2020

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Low-cost and easily scaled-up acidification is a potential synthesis approach to produce CaO-based composites derived from steel slag for thermal energy storage/release via multicyclic calcination/carbonation. Acid concentration, acidification temperature, and acidification duration were comparatively investigated. The cyclic thermal energy storage/release properties of such composites are closely related to the acidification parameters, mainly attributed to the differences in the composition of the synthetic composites under different acidification conditions. The synergistic effect of the increased Ca and Mg content as well as the reduced content of Si and Fe within the composites contributes to improve their cyclic thermal energy storage/release performance.

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High-performance CaO-based composites synthesized using a space-confined chemical vapor deposition strategy for thermochemical energy storage

Cited by 40 publications

References 49 publications

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

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

Enhanced Thermochemical Energy Storage Stability of CaO-Based Composite Pellets Incorporated with a Zr-Based Stabilizer

Thermochemical Energy Storage Performances of Steel Slag‐Derived CaO‐Based Composites

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