Scholarlink

<p>To enhance the battery performance of layer-structured cathode materials, the niobium (Nb) coating was applied using a commercially applicable dry mixing method. The addition of lithium during the coating process induced the in-situ formation of a lithium-niobium-oxide (Li–Nb–O) and uniform distribution on the active material surface, resulting in superior electrochemical performance compared to simple addition of niobium for the dry coating. Furthermore, optimizing the coating temperature facilitated the formation of the Li–Nb–O layer with partial doping of Nb into the bulk structure, thereby simultaneously improving both capacity and cycle-life performance. The electrochemical performance was further enhanced by employing a multi-component coating strategy including aluminum. Moreover, gas generation in pouch-type full cells was evaluated after high-temperature storage in order to assess commercial viability. The Nb-based multi-component coated cathode exhibited less gas generation than its conventional cobalt-coated counterpart, confirming that the Nb-based coating layer effectively suppresses oxygen evolution even at the elevated temperature.</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

Niobium-Based Dry Coating Effect on the Battery Performance of the High-Nickel Layer-Structured Cathode

  • 期刊论文

  • 发表日期：

    2025年10月11日

查看全文
  • Yong Min Kwon,
  • Kookhan Kim,
  • Jeongdoo Yi,
  • Hyun-Wook Park,
  • Yang-Su Kim,
  • Jahun Koo,
  • Seongho Jo,
  • Minsang Jeon,
  • Hyuck Jung,
  • Luanna Silveira Parreira,
  • Robson de Souza Monteiro,
  • Rogerio Marques Ribas,
  • Chunjoong Kim,
  • Jongmin Kim

摘要

To enhance the battery performance of layer-structured cathode materials, the niobium (Nb) coating was applied using a commercially applicable dry mixing method. The addition of lithium during the coating process induced the in-situ formation of a lithium-niobium-oxide (Li–Nb–O) and uniform distribution on the active material surface, resulting in superior electrochemical performance compared to simple addition of niobium for the dry coating. Furthermore, optimizing the coating temperature facilitated the formation of the Li–Nb–O layer with partial doping of Nb into the bulk structure, thereby simultaneously improving both capacity and cycle-life performance. The electrochemical performance was further enhanced by employing a multi-component coating strategy including aluminum. Moreover, gas generation in pouch-type full cells was evaluated after high-temperature storage in order to assess commercial viability. The Nb-based multi-component coated cathode exhibited less gas generation than its conventional cobalt-coated counterpart, confirming that the Nb-based coating layer effectively suppresses oxygen evolution even at the elevated temperature.