Abstract
Driven by the growing of electric vehicle, there is an unmet need to develop wide-range temperate management of Li-ion battery. Promising phase change materials (PCMs) with reinforced energy storage and conversion performance can cool battery by heat storage and heat battery by electro-thermal conversion. Herein, carbon hybrid aerogel by integrating MOF-derived carbon (MOFC) and graphene oxide (GO) aerogel was fabricated to encapsulate lauric acid as LA@MOF-C/GO PCM composite. Densely network of the hybrid aerogel works to enhance electrical/thermal conductivities while synergistic effect between MOF-C and GO helps to improve PCM loading capacity. Consequently, the PCM composite exhibited enhanced heat storage and electro-thermal conversion performances including low input voltage (2.2 V), high electro-thermal efficiency (90%), and enhanced enthalpy (140 J/g), thermal conductivity (1.35 W/mK) and shape-stability (10 °C above m.p.). The LA@MOF-C/GO composite worked efficiently to improve battery performance under environment temperature ranging from 45 °C to −20 °C, which shows great potential in thermal management of electric vehicle battery.
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