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<p>This paper examines a LiNi<sub>0.8</sub>Co<sub>0.15</sub>Al<sub>0.05</sub>O<sub>2</sub> (NCA) system and a LiMn₂O₄ (LMO) system for the preparation of complete batteries, focusing on gas generation, cycling performance, low-temperature performance, and safety performance. The findings indicate that NCA-only batteries exhibit higher gas generation and inferior electrochemical performance. In contrast, the incorporation of LMO results in reduced gas generation and enhanced electrochemical performance. Several factors may contribute to the observed reduction in gas generation and enhancement of electrochemical performance: (1) NCA may be associated with stronger catalytic oxidation of the electrolyte, which contributes to gas generation, whereas LMO appears to be associated with weaker catalytic effects, potentially mitigating gas generation; (2) LMO possesses superior thermal stability compared to NCA, and its inclusion enhances the thermal stability of the cathode, leading to a reduction in gas generation; (3) The reduction in gas generation enhances the stability of the electrochemical interface, thereby potentially improving the electrochemical performance;</p>

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Combined effect of LiMn₂O₄ blending on mitigating gas evolution and enhancing performance of Ni-Rich NCA cathodes

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Xiaodong Liao

摘要

This paper examines a LiNi0.8Co0.15Al0.05O2 (NCA) system and a LiMn₂O₄ (LMO) system for the preparation of complete batteries, focusing on gas generation, cycling performance, low-temperature performance, and safety performance. The findings indicate that NCA-only batteries exhibit higher gas generation and inferior electrochemical performance. In contrast, the incorporation of LMO results in reduced gas generation and enhanced electrochemical performance. Several factors may contribute to the observed reduction in gas generation and enhancement of electrochemical performance: (1) NCA may be associated with stronger catalytic oxidation of the electrolyte, which contributes to gas generation, whereas LMO appears to be associated with weaker catalytic effects, potentially mitigating gas generation; (2) LMO possesses superior thermal stability compared to NCA, and its inclusion enhances the thermal stability of the cathode, leading to a reduction in gas generation; (3) The reduction in gas generation enhances the stability of the electrochemical interface, thereby potentially improving the electrochemical performance;