Preparation of energy storage materials working at 20–25 °C as a cold source for long-term stable operation

•The melting temperature of the composited PCM could be reached around 23 °C.•The phase change latent heat was kept as high as 130 J/g.•The degree of supercooling of the composited PCM was less than 1 °C.•The recovery latent heat of the composited PCM kept high degree after 100 cycles. As an inorgan...

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