NOVELTY - Storage cell comprises a negative electrode comprising liquid alkali metal; a positive electrode having a matrix comprising 50 wt.% or more of a transition metal chalcogenide; a liquid alkali metal haloaluminate electrolyte; and a non-porous solid alkali metal conducting separation element intermediate between the negative electrode and the liquid alkali metal haloaluminate electrolyte.    USE - The storage cell is useful for generating energy; and for manufacturing battery (all claimed) used for bulk energy storage, particularly for electric utility grid storage, as well as for electric vehicle propulsion.    ADVANTAGE - Improved secondary (rechargeable) batteries are provided having high energy density, decreased cost, improved safety, reduced thermal management and improved stability of component supply.    DETAILED DESCRIPTION - Storage cell comprises a negative electrode comprising liquid alkali metal; a positive electrode having a matrix comprising 50 wt.% or more of a transition metal chalcogenide; a liquid alkali metal haloaluminate electrolyte; and a non-porous solid alkali metal conducting separation element intermediate between the negative electrode and the liquid alkali metal haloaluminate electrolyte. The liquid alkali metal haloaluminate electrolyte permeates the matrix of positive electrode and the transition metal chalcogenide of the positive electrode is not in direct physical contact with the solid alkali metal conducting separation element. INDEPENDENT CLAIMS are included for:    (1) a battery comprising the storage cells;    (2) a method for generating energy which involves forming cells; and discharging the cells; and    (3) a method for producing a storage cell which involves forming a negative electrode comprising liquid alkali metal; forming a positive electrode comprising a matrix of 50% by weight or more of transition metal chalcogenide permeated with a liquid alkali metal haloaluminate electrolyte; positioning a non-porous, alkali metal cation-conductive solid electrolyte between the negative electrode and the positive electrode; and providing a liquid alkali metal haloaluminate electrolyte in physical and electrical contact between the alkali metal cation-conductive solid electrolyte and the matrix of the positive electrode.