Rechargeable Li/LiMn2O4 batteries with a polymeric solid electrolyte

The discharge/charge characteristics of Li/polymeric solid electrolyte/LiMn2O4 batteries at room temperature were investigated. The battery exhibited a large realizable capacity and a long cycle life. The reaction of the interface between lithium electrode and the polymeric solid electrolyte is controlled by both the ionic diffusion and the electrochemical reaction, but that of spinel LiMn2O4/polymeric solid electrolyte interface is only limited by the diffusion of the lithium cation in the crystal lattice of spinel LiMn2O4, and the diffusion coefficient is 2.1 x 10 exp -12 sq cm/s. (Author (revised))