A main object of the present invention is to provide a Li-La-Zr-O-based solid electrolyte material having favorable denseness. The present invention solves the problem by providing a solid electrolyte material comprising Li, La, Zr, Al, Si and O, having a ...

The invention provides a solvent for an electrolyte solution, an electrolyte solution, and a gel-like electrolyte superior in oxidation resistance and flame resistance. A solvent for an electrolyte solution comprising at least one boric ester represented b...