Nb-based anodes to enable safe high energy and power batteries for medical devices

铌基阳极可为医疗设备提供安全的高能动力电池

• 批准号: 570416-2021
• 负责人: McCalla, EricER
• 金额: $ 15.07万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747535
• 关键词: Nb; based; anodes; enable; safe

Rechargeable batteries play important roles in implantable medical devices such as deep-brain stimulators to suppress tremors. In such applications, safety is of primary importance. The state-of-the-art anode for such batteries is lithium titanate that operates at a high potential mitigating safety concerns. However, high potential results in a significantly reduced energy density, thereby limiting the applications of these batteries. New Nb-based anode materials are promising in that they continue to operate at safe potentials but allow to nearly double the lithium storage and can be operated at higher rates giving a higher power. However, these materials have, to date, not been integrated into implantable devices due to detrimental transformations during battery use such as particle cracking. Herein, in-situ characterization will be used to fully understand these transformations in order to design a material that is more resilient under the conditions required for implantable devices. Then, a wide variety of material compositions will be screened in high-throughput fashion in order to mitigate these physical limitations. Furthermore, machine-learning algorithms will be utilized to dramatically increase the number of explored materials and predict to what extent co-substitution may be beneficial. In collaboration with our industrial partner, Medtronic Inc., the newly developed materials will be tested under realistic conditions to confirm their viability for medical devices. The development of these higher energy safe batteries will enable new implantable devices in the neuromodulation category and wearable devices such as sensor/monitors (e.g. glucose sensors). These new economic opportunities are important for Canadians both in terms of improved personal health and for the benefits to Medtronic manufacturing facilities in Canada.

可充电电池在植入式医疗设备中发挥着重要作用，例如抑制震颤的深部脑刺激器。在此类应用中，安全性至关重要。此类电池最先进的阳极是钛酸锂，它可以在高电位下运行，从而减轻安全问题。然而，高电势导致能量密度显着降低，从而限制了这些电池的应用。新型铌基阳极材料前景广阔，因为它们可以继续在安全电位下运行，但可以使锂存储量增加近一倍，并且可以以更高的速率运行，从而提供更高的功率。然而，迄今为止，由于电池使用过程中会发生有害的转变（例如颗粒破裂），这些材料尚未集成到可植入设备中。在此，将使用原位表征来充分理解这些转变，以便设计出在可植入设备所需的条件下更具弹性的材料。然后，将以高通量方式筛选各种材料成分，以减轻这些物理限制。此外，机器学习算法将用于显着增加探索材料的数量，并预测共同替代可能有益的程度。与我们的工业合作伙伴美敦力公司合作，新开发的材料将在现实条件下进行测试，以确认其在医疗设备中的可行性。这些更高能量的安全电池的开发将使神经调节类别的新型植入设备和传感器/监视器（例如葡萄糖传感器）等可穿戴设备成为可能。这些新的经济机会对于加拿大人来说非常重要，无论是在改善个人健康方面，还是在加拿大美敦力制造工厂的利益方面。