Review of Research Progress on Concentrated Solar Energy Utilization System

Yao, Shunchun; You-xing, Wei; Lu, Zhimin; Guo, Songjie; Chen, Jinzheng; Yu, Ziyu

doi:10.31635/renewables.023.202200018

Cited by 3 publications

(2 citation statements)

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“…The efficient utilization of solar energy has become a key means of achieving the goals of "carbon neutrality" and "carbon peak" [1]. Concentrated solar power (CSP) is a type of electricity generation that captures solar energy and uses it directly as a heat source for the electricity cycle.…”

Section: Introductionmentioning

confidence: 99%

Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Wang,

Pan,

Zhang

et al. 2024

Materials

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The development of a new generation of solid particle solar receivers (SPSRs) with high solar absorptivity (0.28–2.5 μm) and high infrared emissivity (1–22 μm) is crucial and has attracted much attention for the attainment of the goals of “peak carbon” and “carbon neutrality”. To achieve the modulation of infrared emission and solar absorptivity, two types of medium- and high-entropy rare-earth hexaboride (ME/HEREB6) ceramics, (La0.25Sm0.25Ce0.25Eu0.25)B6 (MEREB6) and (La0.2Sm0.2Ce0.2Eu0.2Ba0.2)B6 (HEREB6), with severe lattice distortions were synthesized using a high-temperature solid-phase method. Compared to single-phase lanthanum hexaboride (LaB6), HEREB6 ceramics show an increase in solar absorptivity from 54.06% to 87.75% in the range of 0.28–2.5 μm and an increase in infrared emissivity from 76.19% to 89.96% in the 1–22 μm wavelength range. On the one hand, decreasing the free electron concentration and the plasma frequency reduces the reflection and ultimately increases the solar absorptivity. On the other hand, the lattice distortion induces changes in the B–B bond length, leading to significant changes in the Raman scattering spectrum, which affects the damping constant and ultimately increases the infrared emissivity. In conclusion, the multicomponent design can effectively improve the solar energy absorption and heat transfer capacity of ME/HEREB6, thus providing a new avenue for the development of solid particles.

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Section: Introductionmentioning

confidence: 99%

Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Wang,

Pan,

Zhang

et al. 2024

Materials

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“…Electrochemical CO 2 reduction (CO 2 R) to valuable multi-carbon (C 2+ ) products offers a promising solution for alleviating the climate change crisis and storing renewable energy. [1][2][3][4][5][6][7][8] Copper (Cu) is by far the only metal that can reduce CO 2 to C 2+ products. [9][10][11][12][13][14] To date, many strategies, like oxide-derived processes, [15][16][17] surface morphology regulation, 18,19 nonmetal doping, 20,21 and alloying, 22,23 have been proposed to modify Cubased catalysts to further improve the activity and selectivity of CO 2 R to C 2+ products, especially ethanol.…”

Section: Introductionmentioning

confidence: 99%

Guiding catalytic CO₂ reduction to ethanol with copper grain boundaries

Cheng¹,

Zhang²,

Li³

et al. 2023

Chem. Sci.

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Electrochemical CO₂ Reduction to Ethanol on Zn‐Coordinated Cu Sites Formed by Atmosphere‐Induced Surface Reconstruction

Du,

Zhang,

et al. 2024

Adv Funct Materials

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Electrochemical CO2 reduction reaction (CO2RR) to produce chemicals and fuels is a promising strategy to achieve carbon neutrality. However, due to the slow C─C coupling kinetics and the fact that C2H5OH and C2H4 products share the same *HCCOH intermediate, achieving high activity and selectivity for C2H5OH remains challenging. This paper describes an atmosphere‐induced reconstruction method to optimize the surface composition and coordination structure of the CuxZny bimetallic alloy catalysts for C2H5OH production. Specifically, the CuxZny alloy catalyst treated within CO atmosphere (CO‐CuxZny) enriches with low‐coordinated Cu sites, which are favorable for the adsorption of the *CO intermediates for promoted C2H5OH production. A C2+ Faradaic efficiency (FE) of 85.1% and a C2H5OH FE of 59.5% are achieved by the CO‐Cu84Zn16 at a current density of 300 mA cm−2. In‐situ spectroscopic studies and DFT calculations demonstrate that the enhanced *CO adsorption promotes the C─C coupling process. At the same time, the hydrogenation of *HCCOH is more favorable on CO‐Cu84Zn16 to inhibit the C2H4 pathway, thus enhancing the generation of C2H5OH. This study provides an effective strategy to regulate the selectivity of CO2RR through the control of the surface coordination environment of the active sites.

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Review of Research Progress on Concentrated Solar Energy Utilization System

Cited by 3 publications

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Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Guiding catalytic CO₂ reduction to ethanol with copper grain boundaries

Electrochemical CO₂ Reduction to Ethanol on Zn‐Coordinated Cu Sites Formed by Atmosphere‐Induced Surface Reconstruction

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Review of Research Progress on Concentrated Solar Energy Utilization System

Cited by 3 publications

References 0 publications

Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Medium- and High-Entropy Rare Earth Hexaborides with Enhanced Solar Energy Absorption and Infrared Emissivity

Guiding catalytic CO2 reduction to ethanol with copper grain boundaries

Electrochemical CO2 Reduction to Ethanol on Zn‐Coordinated Cu Sites Formed by Atmosphere‐Induced Surface Reconstruction

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Product

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Guiding catalytic CO₂ reduction to ethanol with copper grain boundaries

Electrochemical CO₂ Reduction to Ethanol on Zn‐Coordinated Cu Sites Formed by Atmosphere‐Induced Surface Reconstruction