Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 14, Pages 8194-8203Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta01496a
Keywords
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Funding
- National Natural Science Foundation of China [51776218]
- Natural Science Foundation of Jiangsu Province [BK20180083]
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Solving the mismatch between the supply and demand of energy in energy storage techniques is critical. Here, we report a novel Lewis acid catalysis induced in situ phase change material (PCM) shape-stabilization strategy to fabricate hyper-crosslinked polystyrene (HCPS) encapsulated PCMs towards the goal of highly efficient thermal energy storage. A simultaneous cross-linking and encapsulation process, enabled by a powerful FeCl3 catalyzed cross linking reaction, results in a highly efficient encapsulation rate. Thermal conductivity of the PCMs was enhanced by converting the cross-linking catalyst FeCl3 to Fe3O4 using a simple alkali treatment, by which 17% to 55% thermal conductivity enhancement was achieved compared with pure paraffin. Notably, waste polystyrene (PS) foam was demonstrated to be capable of being used as a starting material to support PCM, opening up a new avenue to utilize waste PS foam.
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