Spray-dried Poly(ethylene glycol)/Carbon Black/Carbon Nanotube Composite Phase Change Materials for Latent Heat Thermal Energy Storage Systems
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초록
내용
Thermal energy storage (TES) technologies address supply continuity issues in sustainable energy storage systems. Latent heat storage is larger than sensible heat storage, requiring less material mass and volume for high energy efficiency. Organic phase change materials (PCMs) like paraffins, fatty acids, esters, alcohols, and polyethylene glycol (PEG) are widely used for their chemical stability, low cost, high phase transition enthalpy, and adequate temperature range. Shape-stabilized composite PCMs (SSPCM) are produced by combining nano-porous supporting materials and capillary force and hydrogen bonding interactions. Here, PEG is employed as a PCM, and carbon black and carbon nanotubes are used to build a supporting material and conductive channel. Spray-dried SSPCM guarantees that PEG is well attached to the porous carbon structure, preventing leaks above the melting point.