Biomass-based shape-stabilized phase change materials from artificially cultured ship-shaped diatom frustules with high enthalpy for thermal energy storage

Wu，Bangyao; Lyu，Sha; Han，He; Li，Tao; Sun，Haoyang; Wang，Jaw Kai; Li，Dandan; Lei，Fan; Huang，Jintao; Sun，Dazhi

2021-01-15

10.1016/j.compositesb.2020.108500

COMPOSITES PART B-ENGINEERING   影响因子和分区

1359-8368

1879-1069

The high adsorption capacity of the phase change mediums in porous supports is a key requirement for the shape-stabilized phase change materials (ss-PCMs) with high latent heat. Here, ship-shaped diatom (Pennales) frustule-based composite ss-PCMs with high polyethylene glycol (PEG) absorption capacity and high phase change enthalpy was prepared by a solution-assisted vacuum impregnation method for high-performance thermal energy storage. To improve the diatom frustules’ specific surface area and form a multi-level pore structure, the effects of calcination temperature on the microstructure of diatom frustules were studied. It was found that diatom frustules calcined at 400 °C (400CDF) had a relatively high specific surface area (~155.9 m/g) with a well-maintained skeleton, which was a suitable PEG supporter. The devised PEG/400CDF composites with 72.7% loading of PEG4000 that had a latent heat value of 128.9 J/g for melting and 136.7 J/g for freezing, and the relative enthalpy efficiency reached up to 97.7%. The composite ss-PCMs exhibited thermal and chemical stability even after 200 thermal cycles. The current work demonstrated that ss-PCMs from biomass-based artificially cultured diatoms could slow the spread of heat by absorbing thermal energy. Moreover, the phase change mechanisms of the PEG/CDF composites under the nanoconfinement in the diatom frustules framework were also explored to explain the obtained high adsorption capacity.

PEG/CDF composites Polyethylene glycol Shape-stabilized phase change materials Ship-shaped diatom frustules Thermal energy storage

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[52003111]

Engineering ; Materials Science

Engineering, Multidisciplinary ; Materials Science, Composites

WOS:000596375900002

ELSEVIER SCI LTD

20204609482909

Enthalpy ; Latent heat ; Pore structure ; Specific surface area ; Ships ; Chemical stability ; Phase change materials ; Calcination ; Heat transfer ; Dye-sensitized solar cells ; Heat storage ; Polyethylenes ; Storage (materials) ; Thermal energy

Thermodynamics:641.1 ; Heat Transfer:641.2 ; Storage:694.4 ; Solar Cells:702.3 ; Chemistry:801 ; Electrochemistry:801.4.1 ; Chemical Operations:802.3 ; Organic Polymers:815.1.1 ; Physical Properties of Gases, Liquids and Solids:931.2

MATERIALS SCIENCE

2-s2.0-85095770118

Scopus

SUSTech-Taili Joint Lab for Diatom Materials,Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wu，Bangyao,Lyu，Sha,Han，He,et al. Biomass-based shape-stabilized phase change materials from artificially cultured ship-shaped diatom frustules with high enthalpy for thermal energy storage[J]. COMPOSITES PART B-ENGINEERING,2021,205.

Wu，Bangyao.,Lyu，Sha.,Han，He.,Li，Tao.,Sun，Haoyang.,...&Sun，Dazhi.(2021).Biomass-based shape-stabilized phase change materials from artificially cultured ship-shaped diatom frustules with high enthalpy for thermal energy storage.COMPOSITES PART B-ENGINEERING,205.

Wu，Bangyao,et al."Biomass-based shape-stabilized phase change materials from artificially cultured ship-shaped diatom frustules with high enthalpy for thermal energy storage".COMPOSITES PART B-ENGINEERING 205(2021).