The main difference between them lies in the difference of electrolyte. Liquid electrolyte is used for liquid lithium-ion battery, while solid polymer electrolyte is used for polymer lithium-ion battery. This polymer can be "dry" or "colloidal". At present, polymer gel electrolyte is mostly used.
Lithium polymer battery, also known as polymer lithium battery, is a battery with chemical properties. Compared with previous batteries, it has the characteristics of high energy, miniaturization and lightweight.