Ceramic nanoparticles enhancement of latent heat thermal energy storage properties for LiNO3/NaCl: Evaluation from material to system level

Luo, Qingyang; Liu, Xianglei; Xu, Qiao; Tian, Yang; Yao, Haichen; Wang, Jianguo; Lv, Shushan; Dang, Chunzhuo; Xuan, Yimin

doi:10.1016/j.apenergy.2022.120418

Cited by 18 publications

(7 citation statements)

References 57 publications

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“…The thermal conductivity of MEPCM-T was further increased by 156.2% and 47.0% compared to plain NaNO 3 and the MEPCM microcapsules, respectively. In comparison, Luo et al demonstrated that doping 4 wt % MgO nanoparticles in LiNO 3 /NaCl could enhance the thermal conductivity by 32.3%. Furthermore, Luo et al embedded a LiNO 3 /NaCl eutectic decorated with 1 wt % SiO 2 nanoparticles into a three-dimensional layered ultralight silicon carbide foam.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Numerous endeavors have been undertaken to enhance the efficiency of heat transfer in phase change materials with the aim of increasing the efficacy of thermal energy storage and transfer systems. These measures encompass the incorporation of metal foam fins , and doped nanoparticles . The heat transfer efficiency of microcapsules, therefore, is commonly augmented by the addition of highly conductive particles.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

Xiao

et al. 2023

Energy Fuels

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Molten salts are widely used as thermal energy storage materials for solar thermal applications, but they suffer from low photothermal conversion efficiency and potential leakage and corrosion issues. In this paper, MXene doping was proposed to improve the thermal properties and photothermal conversion efficiency of microencapsulated molten salts. MXene nanomaterials, which have excellent thermal conductivity and photothermal conversion efficiency, were used to dope the molten salts. The results tested by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) indicate that MXene was well doped in the molten salt microcapsules. Fourier transformation infrared (FT-IR) spectroscopy was used to confirm that the microencapsulation of the molten salt by silica is a physical action. The results of X-ray diffractometry (XRD) show that the crystal structure of the molten salt maintained stability. The results obtained from the Hot Disk thermal constant analyzer and photothermal conversion experiments showed that thermal conductivity and photothermal conversion efficiency of the MXene-doped microcapsules were increased by 156.2% and 169.4%, respectively. The differential scanning calorimeter (DSC) results indicated that the MXene-doped microcapsules had a reduction of 49.6% in the supercooling degree. The thermal reliability of the MXene-doped microcapsules was 94.0% after 50 thermal cycles. This approach provides a promising solution for improving the thermal properties and photothermal conversion efficiency of microencapsulated molten salts for medium-temperature solar thermal energy storage.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

Xiao

et al. 2023

Energy Fuels

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“…Better TC enhancement can be achieved by improving the dispersion quality; [25,26,40,42] for example, it has been shown that the good dispersion quality of GnP fillers in a polymer matrix allows the formation of a filler network that further enhances the TC. [24,36] The low TC values of pristine salts (< 1 W m −1 K −1 , Figure 1) have been enhanced by various methods, yielding TC values ranging from 0.2-3 W m −1 K −1 for ceramic-based systems [43][44][45][46][47][48][49][50][51][52][53][54] and up to 9 W m −1 K −1 for carbon-based systems (Figure 1 and Table S1, Supporting Information). [55][56][57][58][59][60] As expected, an increase in the concentration of filler (graphite in this case) was found to enhance the TC of the salt composite (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…The low TC values of pristine salts (< 1 W m −1 K −1 , Figure 1 ) have been enhanced by various methods, yielding TC values ranging from 0.2–3 W m −1 K −1 for ceramic‐based systems [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ] and up to 9 W m −1 K −1 for carbon‐based systems (Figure 1 and Table S1 , Supporting Information). [ 55 , 56 , 57 , 58 , 59 , 60 ] As expected, an increase in the concentration of filler (graphite in this case) was found to enhance the TC of the salt composite (Figure 1 ).…”

Section: Introductionmentioning

confidence: 99%

Thermally Conductive Molten Salt for Thermal Energy Storage: Synergistic Effect of a Hybrid Graphite‐Graphene Nanoplatelet Filler

Lavi,

Ohayon‐Lavi,

Leibovitch

et al. 2023

Global Challenges

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Renewable energy technologies depend, to a large extent, on the efficiency of thermal energy storage (TES) devices. In such storage applications, molten salts constitute an attractive platform due to their thermal and environmentally friendly properties. However, the low thermal conductivity (TC) of these salts (<1 W m−1 K−1) downgrades the storage kinetics. A commonly used method to enhance TC is the addition of highly conductive carbon‐based fillers that form a composite material with molten salt. However, even that enhancement is rather limited (<9 W m−1 K−1). In this study, the partial exfoliation of graphite to graphene nanoplatelets (GnP) in a molten salt matrix is explored as a means to address this problem. A novel approach of hybrid filler formation directly in the molten salt is used to produce graphite–GnP–salt hybrid composite material. The good dispersion quality of the fillers in the salt matrix facilitates bridging between large graphite particles by the smaller GnP particles, resulting in the formation of a thermally conductive network. The thermal conductivity of the hybrid composite (up to 44 W m−1 K−1) is thus enhanced by two orders of magnitude versus that of the pristine salt (0.64 W m−1 K−1).

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“…This constant interaction with the gas-liquid interface facilitates contact between CA and CO 2 , improving capture efficiency. 26,27 By contrast, the gas-solid or gas-liquid-solid mass transfer efficiency between immobilized CA and CO 2 is usually affected by factors such as substrate structure, size, specific surface area, and porosity. 21,28 For example, when CA is immobilized on the surface of rigid materials in the form of encapsulation, CO 2 needs to break through the gas-liquid mass transfer resistance between CO 2 -H 2 O and the gas-solid mass transfer resistance between CO 2 -rigid materials.…”

mentioning

confidence: 99%

Enhancing carbon capture efficiency with a large-sized bionic jellyfish-carbonic anhydrase complex

Zhu,

Du,

Gao

et al. 2023

Green Chem.

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Ceramic nanoparticles enhancement of latent heat thermal energy storage properties for LiNO3/NaCl: Evaluation from material to system level

Cited by 18 publications

References 57 publications

Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

Thermally Conductive Molten Salt for Thermal Energy Storage: Synergistic Effect of a Hybrid Graphite‐Graphene Nanoplatelet Filler

Enhancing carbon capture efficiency with a large-sized bionic jellyfish-carbonic anhydrase complex

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