Scholarlink

<p>High-nickel LiNi<sub>0.9</sub>Co<sub>0.01</sub>Mn<sub>0.09</sub>O<sub>2</sub> cathode materials demonstrate significant potential for next-generation lithium-ion batteries (LIBs) due to their high energy density and low cost. However, the reduced cobalt content in these high-nickel materials often results in structural degradation and poor cycling stability. In this work, the material referred to as NCM919 was prepared through a homogeneous co-precipitation method, followed by the introduction of W<sup>6+</sup> doping to enhance cycling stability. The electrochemical performance results indicate that the cathode doped with 1.0&#xa0;mol% W<sup>6+</sup> (NCM-1.0&#xa0;W) exhibits improved electrochemical characteristics. NCM-1.0&#xa0;W shows an initial discharge capacity of 182.74 mAh/g at a rate of 0.5&#xa0;C, with 97.86% of the initial capacity retained after 100 cycles within a voltage range of 2.5 ~ 4.3&#xa0;V. Additionally, NCM-1.0&#xa0;W achieves an initial discharge capacity of 197.99 mAh/g at a rate of 1.0&#xa0;C, with 85.68% of the initial capacity maintained after 100 cycles in a voltage range of 2.5 ~ 4.5&#xa0;V.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of W6+ doping on the electrochemical performance of low-cobalt LiNi0.9Co0.01Mn0.09O2 cathode materials

  • 期刊论文

  • 发表日期：

    2025年8月19日

查看全文
  • Jiatai Wang,
  • Yuanyuan Li,
  • Chao Fan,
  • Jiting Li,
  • Xi Wen,
  • Hongyun Liu,
  • Xuchao Zhang,
  • Xiaohong Ma,
  • Jingfu Hu,
  • Jian Li

摘要

High-nickel LiNi0.9Co0.01Mn0.09O2 cathode materials demonstrate significant potential for next-generation lithium-ion batteries (LIBs) due to their high energy density and low cost. However, the reduced cobalt content in these high-nickel materials often results in structural degradation and poor cycling stability. In this work, the material referred to as NCM919 was prepared through a homogeneous co-precipitation method, followed by the introduction of W6+ doping to enhance cycling stability. The electrochemical performance results indicate that the cathode doped with 1.0 mol% W6+ (NCM-1.0 W) exhibits improved electrochemical characteristics. NCM-1.0 W shows an initial discharge capacity of 182.74 mAh/g at a rate of 0.5 C, with 97.86% of the initial capacity retained after 100 cycles within a voltage range of 2.5 ~ 4.3 V. Additionally, NCM-1.0 W achieves an initial discharge capacity of 197.99 mAh/g at a rate of 1.0 C, with 85.68% of the initial capacity maintained after 100 cycles in a voltage range of 2.5 ~ 4.5 V.