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<p>The material Li<sub>1.5</sub>Al<sub>0.5</sub>Ti<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> is a lithium fast ion conductor with three-dimensional ion channels. It exhibits high ionic conductivity, with lithium ion conductivity. To prevent long-term direct contact between Li<sub>1.2</sub>Mn<sub>0.54</sub>Ni<sub>0.13</sub>Co<sub>0.13</sub>O<sub>2</sub> material and electrolyte, and avoid HF corrosion of the electrode produced by the decomposition of the electrolyte. A three-dimensional skeleton lithium fast ion conductor Li<sub>1.5</sub>Al<sub>0.5</sub>Ti<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> coating layer was successfully synthesized on the surface of the lithium-rich manganese-based positive electrode material Li<sub>1.2</sub>Mn<sub>0.54</sub>Ni<sub>0.13</sub>Co<sub>0.13</sub>O<sub>2</sub>. The experimental results show that the Li<sub>1.2</sub>Mn<sub>0.54</sub>Ni<sub>0.13</sub>Co<sub>0.13</sub>O<sub>2</sub>@Li<sub>1.5</sub>Al<sub>0.5</sub>Ti<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> composite material with a coating amount of 3% has the highest capacity retention rate after 100 cycles. The capacity retention rate reaches 85.9% after 100 cycles at 0.1&#xa0;C, which is better than the 82.14% of the base material. It proves that the Li<sub>1.5</sub>Al<sub>0.5</sub>Ti<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> coating layer effectively prevents the occurrence of side reactions during long cycles, stabilizes the electrode surface structure, and reduces capacity loss.</p>

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Enhancing Li-ion battery anode performances via Li1.5Al0.5Ti1.5(PO4)3 coated Li1.2Mn0.54Ni0.13Co0.13O2 cathode

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月18日

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  • Shang-Mei Yang,
  • Shi-Ping Shao,
  • Yu-Long Xie

摘要

The material Li1.5Al0.5Ti1.5(PO4)3 is a lithium fast ion conductor with three-dimensional ion channels. It exhibits high ionic conductivity, with lithium ion conductivity. To prevent long-term direct contact between Li1.2Mn0.54Ni0.13Co0.13O2 material and electrolyte, and avoid HF corrosion of the electrode produced by the decomposition of the electrolyte. A three-dimensional skeleton lithium fast ion conductor Li1.5Al0.5Ti1.5(PO4)3 coating layer was successfully synthesized on the surface of the lithium-rich manganese-based positive electrode material Li1.2Mn0.54Ni0.13Co0.13O2. The experimental results show that the Li1.2Mn0.54Ni0.13Co0.13O2@Li1.5Al0.5Ti1.5(PO4)3 composite material with a coating amount of 3% has the highest capacity retention rate after 100 cycles. The capacity retention rate reaches 85.9% after 100 cycles at 0.1 C, which is better than the 82.14% of the base material. It proves that the Li1.5Al0.5Ti1.5(PO4)3 coating layer effectively prevents the occurrence of side reactions during long cycles, stabilizes the electrode surface structure, and reduces capacity loss.