Improving the high-temperature operations of fast-charging lithium-ion batteries

改善快充锂离子电池的高温运行

• 批准号: 10040160
• 金额: $ 3.66万
• 依托单位: ECHION TECHNOLOGIES LTD
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10040160
• 关键词: Improving; temperature; operations; fast; charging

One of the challenges of the Li-ion batteries is a good cycle life (\>1000 cycles) for a temperature range between -20 and 60 degrees Celsius required by almost all the applications. The lithium-ion cell works on ion movement between the cathode and anode electrodes. In theory, such a mechanism should work forever, but cycling or storage at an elevated temperature decreases performance over time.Echion has developed a range of unique and patented commercial anode materials based on mixed niobium oxide (XNO) with applications in fast-charging lithium-ion batteries, where they achieve an excellent cycle life at 25dC, performing thousands of cycles. However, at 60dC, the cells may only reach hundreds of cycles in some designs. This project aims to understand the ageing mechanism at 60dC to improve the cycle life at high temperatures. This will be done via analysis of the cells after cycling to understand why this is the case.A4I project brings together Echion Technologies Ltd, National Physical Laboratory and Rutherford Appleton Laboratory to better understand the ageing mechanism at 60dC in some cell designs and improve their cycle life at this high temperature. If we are able to understand and resolve this problem it could accelerate the adoption and commercialization of a next-generation ultra-high power, fast-charging cell material system for new emerging applications such as e-Mobility. Adoption of such solutions could provide significant environmental and public health benefits by reducing the transport sector's toxic gases and harmful particulates. Which is in line with the government's Net Zero emissions.

锂离子电池的挑战之一是几乎所有应用所需的-20至60摄氏度温度范围内的良好循环寿命（>1000次循环）。锂离子电池的工作原理是离子在阴极和阳极之间移动。从理论上讲，这种机制应该永远有效，但在高温下循环或储存会随着时间的推移而降低性能。Echion开发了一系列基于混合氧化铌（XNO）的独特专利商业阳极材料，用于快速充电锂离子电池，在25 dC下实现了出色的循环寿命，可以进行数千次循环。然而，在60 dC下，在某些设计中，电池可能仅达到数百个循环。该项目旨在了解60 dC下的老化机制，以提高高温下的循环寿命。这将通过分析循环后的电池来完成，以了解为什么会出现这种情况。A4 I项目汇集了Echion Technologies Ltd，国家物理实验室和卢瑟福阿普尔顿实验室，以更好地了解某些电池设计在60 dC下的老化机制，并提高其在此高温下的循环寿命。如果我们能够理解并解决这个问题，它可以加速下一代超高功率，快速充电电池材料系统的采用和商业化，用于新兴应用，如电动汽车。采用这种解决办法可以减少运输部门的有毒气体和有害颗粒物，从而在环境和公共健康方面带来重大惠益。这符合政府的净零排放。