An electrical energy storage device 20 is disclosed as a secondary battery device 22 having an anode 28 containing Aluminum and Indium and a cathode 38 that includes an electroactive layer 42 with a host lattice 44 having a conjugated system with delocalized π electrons. A dopant 48 containing Aluminum is bonded with and intercalated in the host lattice 44. A membrane 34 of cellulose is wetted with a non-aqueous electrolyte 24 containing glycerol and first ions 26 containing Aluminum and having a positive charge and second ions 27 containing Aluminum and having a negative charge, and is sandwiched between the anode 28 and the cathode 38. A method for constructing a secondary battery device 22 is disclosed as well, including steps for producing the electrolyte 24, the anode 28, and the cathode 38 including the dopant 48.