Microencapsulation of molten salt in stable silica shell via a water-limited sol-gel process for high temperature thermal energy storage

[Display omitted] •Microencapsulated potassium nitrate is synthesized via a novel water-limit sol-gel process.•Microcapsules have excellent thermal stability at high temperature up to 400 °C.•The microencapsulation process can provide a high encapsulation ratio of 95.2%.•The microencapsulation proce...

Ausführliche Beschreibung