Scholarlink

<p>Driven by the goals of carbon neutrality, electrochemical storage technologies play a vital role in supporting the integration of renewable energy and reducing dependency on fossil fuels. The Mn-based rechargeable battery (MnRB) is gaining significant attention in the battery industry due to its high voltage platform and high energy density, making it a potential alternative in the e-bike and energy storage system area. The safety performance of MnRB is crucial for its widespread application. However, there has been a scarcity of studies evaluating the safety of MnRB. In this study, the thermal safety behavior of a commercial Mn-based composite cathode battery from the perspectives of "heat generation-gas emission- explosion risks". Its safety performance was compared with that of existing batteries using Li(Ni<sub>x</sub>Co<sub>y</sub>Mn<sub>z</sub>)O<sub>2</sub> and LiFePO<sub>4</sub>(LFP) as cathode materials. The results indicate that MnRB exhibits a higher triggering temperature, 0.8% lower than Li(Ni<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>)O<sub>2</sub> (NCM523) and approximately 12.7% lower than LFP. MnRB's normalized gas emission during thermal runway (TR) is 1.3% lower than that of NCM523, with the primary gas components being CO, H<sub>2</sub>, and CO<sub>2</sub>. The lower explosion limit of MnRB is approximately 2.7% lower than NCM523 and 44.0% higher than LFP. MnRB exhibits intermediate thermal stability and combustion-explosion characteristics between NCM523 and LFP. This study provides valuable data on MnRB's TR behavior, offering a comprehensive assessment of MnRB's intrinsic safety performance through quantitative evaluation. The findings present clear directions for designing, optimizing, and implementing safety measures for MnRB against TR.</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

Safety assessment of Mn-based lithium-ion battery: thermal stability and vent gas explosion characteristics

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月11日

查看全文
  • Chengshan Xu,
  • Jingru Huang,
  • Wenyu Dong,
  • Peiben Wang,
  • Mengqi Zhang,
  • Xuning Feng,
  • Minggao Ouyang

摘要

Driven by the goals of carbon neutrality, electrochemical storage technologies play a vital role in supporting the integration of renewable energy and reducing dependency on fossil fuels. The Mn-based rechargeable battery (MnRB) is gaining significant attention in the battery industry due to its high voltage platform and high energy density, making it a potential alternative in the e-bike and energy storage system area. The safety performance of MnRB is crucial for its widespread application. However, there has been a scarcity of studies evaluating the safety of MnRB. In this study, the thermal safety behavior of a commercial Mn-based composite cathode battery from the perspectives of "heat generation-gas emission- explosion risks". Its safety performance was compared with that of existing batteries using Li(NixCoyMnz)O2 and LiFePO4(LFP) as cathode materials. The results indicate that MnRB exhibits a higher triggering temperature, 0.8% lower than Li(Ni0.5Co0.2Mn0.3)O2 (NCM523) and approximately 12.7% lower than LFP. MnRB's normalized gas emission during thermal runway (TR) is 1.3% lower than that of NCM523, with the primary gas components being CO, H2, and CO2. The lower explosion limit of MnRB is approximately 2.7% lower than NCM523 and 44.0% higher than LFP. MnRB exhibits intermediate thermal stability and combustion-explosion characteristics between NCM523 and LFP. This study provides valuable data on MnRB's TR behavior, offering a comprehensive assessment of MnRB's intrinsic safety performance through quantitative evaluation. The findings present clear directions for designing, optimizing, and implementing safety measures for MnRB against TR.