ABSTRACT
Polymer electrolyte membranes are one of the key components in many electrochemical energy conversion and storage devices, with the main functions of conducting ions and acting as separators [1-3]. They are inherently safer than those classical salt-liquid solvent electrolytes in lithium batteries, as there will be no problem of internal shorting or electrolyte leakage using these polymer electrolytes. Unlike the ammable organic solvents that always raise the combustion concerns, these polymer electrolytes are nonammable. In fuel cells, the application of solid polymer electrolytes could overcome the leakage problem associated with liquid electrolytes.
