<span style="font-size:14.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; color:black;mso-ansi-language:EN-IN;mso-fareast-language:EN-IN;mso-bidi-language: HI" lang="EN-IN">Preparation and characterization of Li_1.1Mn₂O₄/polymer electrolyte/graphite cell</span>

Abstract

345-348Solid state batteries with lithium and an insertion material as active electrode components and a poly (ethylene oxide) based electrolyte, have proven to be feasible alternatives to the classical secondary battery systems. The solid state electrochemical cell Li1.1Mn2O4 |PEO:LiClO4| Graphite was fabricated by sandwiching the thin electrolyte film between the cathode and anode pellets. This sandwich was pressed between suitable current collectors in a spring tight sample holder assembly. The complex impedance of electrolyte and Li1.1Mn2O4 was measured and discharge characteristics were studied for various loads. Also energy densities were calculated. Constant current discharge curves were obtained at several load values. The observed energy density is 47 J/kg for 0.1 M ohm load. The lithium salt content of the polymer electrolyte is found to decrease at the positive electrode whilst increasing at the lithium side. The res ults predict that the critical charge at which the curves deviate should be inversely proportional to the current.</span