4.2 Article

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

期刊

JOURNAL OF NANOMATERIALS
卷 2021, 期 -, 页码 -

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HINDAWI LTD
DOI: 10.1155/2021/9312358

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资金

  1. Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.02-2019.26]
  2. Ministry of Science and Technology of Vietnam [NDT.75.CHN/19]

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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.
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.

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