极低温锂离子电池技术研究

Research on utra-low temperature lithium-ion battery technology

为提高锂离子电池在极低温环境下的充放电性能,解决电池在低温下剧烈极化和内阻增大等问题,采用了多种方法来优化电极材料和电解液。通过改变负极材料的配方和结构,提高了材料的导电性和锂离子嵌入/脱出速率;通过优化电解液的配方,并添加适当的添加剂,提高了电解液的离子电导率和抗冻性能。实验结果表明,通过这些优化措施,锂离子电池在极低温环境下的充放电性能得到显著提高。在-40℃以下的极低温环境下,优化后的电池具有更高的比容量和更好的循环性能。这些研究成果有望为未来空间科学技术的发展提供支持,并为锂离子电池在极端环境下的应用提供了新的思路和方向。

This study aimed to improve the performance of lithium-ion batteries at extremely low temperatures by optimizing electrode materials and electrolytes.In order to address the severe polarization and increased internal resistance of batteries at low temperatures,various optimization methods were adopted.Researchers used various methods to address this issue,including modifying electrode materials to enhance conductivity and lithium-ion insertion/extraction rates,and optimizing the electrolyte formula to improve ion conductivity and anti-freezing properties.Experimental results show significant improvements in charge and discharge performance at temperatures below-40℃.These findings are expected to support the development of space science and technology and offer new directions for using lithium-ion batteries in extreme environments.