LiMnO2 and LiMn0.9Cr0.1O2 were prepared by a high temperature solid-state route. In comparison with orthorhombic LiMnO2, monoclinic LiMnO2 was formed with Cr substitution. The research shows that the irreversible transformation to spinel-like structure during LiMnO2 cycling is a gradual phase transformation process. In comparison with the 2.9 V and 4 V plateaus of LiMnO2, LiMn0.9Cr0.1O2 shows only 2.9 V plateau for further cycling. So it is clear that the electrochemistry behavior change from LiMnO2 to LiMn0.9Cr0.1O2 phase is due to doping of Cr.
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谷亦杰 周恒辉 常文保.掺Cr对LiMnO2的影响[J].稀有金属材料与工程,2004,33(8):789~792.[Abstract. Effect of Cr Doping on LiMnO2[J]. Rare Metal Materials and Engineering,2004,33(8):789~792.] DOI：[doi]