Preparation of mechanically robust and thermochromic phase change materials for thermal energy storage and temperature indicator

•Mechanically robust and thermochromic SSPCMs were successfully prepared.•These Micro-HPCMs possess outstanding reversible thermochromic function.•The tensile strength of Micro-HPCM4K can arrive at the maximum of 14.8 MPa.•The thermochromic SSPCMs have good thermal energy storage ability of 113.4 J ...

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