POTASSIUM SECONDARY BATTERY

The present technology is directed to a potassium metal battery, particularly a potassium metal secondary battery, that includes a cathode; an anode that includes potassium metal; and a non-aqueous electrolyte that includes a potassium salt as well as a solvent. The solvent may include dimethoxyethane, digylme, triglyme, tetraglyme, or a mixture of any two or more thereof.