A negative-thermal-quenching LaMgAl11O19: Er3+, Sm3+ phosphor achieved by energy transfer from Er3+ to Sm3+

Min, Xin; Lao, Cheng-Yen; Liu, Yifei; Ji, Haipeng; Wu, Xiaowen; Liu, Yan'gai; Huang, Zhaohui; Fang, Minghao; Abdelkader, Amr M.; Kumar, Ramachandran Vasant; Xi, Kai

doi:10.1016/j.jlumin.2023.120380

Cited by 4 publications

(1 citation statement)

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“…Phase change materials (PCMs) are a typical application example of latent heat storage and have considerable advantages in many industries. − The poor insulation capacity of traditional buildings leads to the large energy consumption of indoor ventilation, air conditioning heating systems, and lighting equipment. Applying PCMs to the construction field and preparing new building energy storage materials combined with building materials can store a large amount of energy directly obtained from solar radiation in the building envelope, which is convenient to control the ambient temperature and meet the requirements of human comfort .…”

Section: Introductionmentioning

confidence: 99%

Thermal Performances and Stability of Capric Acid–Stearic Acid–Paraffin Wax Adsorbed into Expanded Graphite in Vacuum Conditions

Guo,

Fei,

et al. 2024

J. Phys. Chem. C

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A new form-stable composite phase change material (CPCM) of capric acid-stearic acid-paraffin wax/expanded graphite (CSPW/EG) was prepared by vacuum adsorption. CSPW has a minimum crystallization temperature of 21.9 °C at the eutectic mass proportion of 74.7:8.3:17 by the step cooling curve method and has a phase change temperature of 25.27 °C and an enthalpy of 126.82 J/g by differential scanning calorimetry (DSC). The mixing proportion of CSPW to EG was determined to be 10:1 based on the enthalpy change and leakage of CPCMs; the enthalpy and phase transition temperature of CSPW/EG were 119.26 J/g and 27.14 °C, respectively. The microstructure, crystal structure, and chemical structure of CSPW/EG were characterized by using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The initial weight loss temperature of CSPW/EG was 159.8 °C, which is far beyond the working temperature. The heat storage-release experiments and 1000 melting−solidification cycles also confirmed that CSPW/EG has excellent heat energy storage and temperature control ability, thermal reliability, and great potential in practical engineering heat storage applications.

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