For the stabilization of the spinel structured LiMn2O4, a fraction of manganese was substituted with various metals such as Mg, Fe, V, W, Cr, Mo with Mn that had a similar ionic radii (LiMxMn2-xO4(0.05≤x≤0.02)). The LiMxMn2-xO4showed a substantial improvement as lower capacity loss than that of the spinel structured LiMn2O4when it was used as a cathode material. And with the partial substitution, the chemical diffusion coefficient for LiMg0.05Mn1.9O4and LiCr0.1Mn1.9O4was increased by and order of magnitude compared to that of the LiMn2O4with spinel structure. The results showed that significant improvement can be made on the electrochemical characteristics as the structure of the LiMn2O4electrode material was stabilized by the partial substitution.

스피넬 구조인 LiMn2O4의 안정성을 향상시키기 위해서 망간과 비슷한 이온반경을 갖는 여러 가지 금속원소, Mg, Fe, V, W, Cr, Mo들을 일부 치환하였으며 (LiMxMn2-xO4(0.05≤x≤0.02)), 이 결과 LiMxMn2-xO4정극은 정극물질로 사용할 경우 LiMn2O4보다 낮은 용량감소를 나타냈다. 그리고 화학확산계수의 측정 결과 LiMg0.05Mn1.9O4와 LiCr0.1Mn1.9O4의 화학확산계수는 LiMn2O4보다 약 10배 이상 크게 나타났다. 이러한 결과를 볼 때 LiMn2O4에 여러 가지 금속원소를 치환시킴으로 구조적인 안정화로 인한 전기화학적 성능을 향상시킬 수 있었다.