Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Herein, we reported the composite structure of LiMnO2 and Li2MnO3 as a low-cost and environmentally benign cathode material. This composite with the main phase of LiMnO2 (90%) was synthesized by hydrothermal method at 220 degrees C from LiOH and Mn(CH3COO)(2) precursors. The obtained nanosized LiMnO2-LiMnO3 cathode material exhibits a high capacity of 265 mAh g(-1) at C/10. The incorporation of Li2MnO3 into the LiMnO2 phase could stabilize the structure, leading to the improved cycle stability of the cathode. The capacity retention of the cathode was 93% after 80 cycles at C/2. Our results facilitate a potential strategy for developing high-performance cathode materials based on the Li-Mn-O system.

Automated summary

In this study, a composite structure of LiMnO2 and Li2MnO3 as a cost-effective and environmentally friendly cathode material was reported. The incorporation of Li2MnO3 into the LiMnO2 phase stabilized the structure and led to improved cycle stability, with a capacity retention of 93% after 80 cycles at C/2. This research provides a potential strategy for developing high-performance cathode materials based on the Li-Mn-O system.