NSERC/3M Canada Industrial Research Chair in Materials for Advanced Batteries

锂离子电池在市场上已经存在了20年。在任何与便携式电子产品兼容的可充电电池技术中，它们存储的单位体积或单位质量的能量都是最大的。它们具有优异的性能和存储特性，充放电循环寿命长，无记忆效应，价格低廉。因此，它们已成为笔记本电脑、手机、数码相机、电动工具等便携式电子设备的首选电源。锂离子电池目前面向电动汽车和电网储能应用。这些应用要求电池的使用寿命从10年(自动)到30年(网格)。在这些现实的条件下，在细胞中测试新的化学物质，在这些时间框架内，超过了研究生职业生涯的长度(更不用说教授了！)因此，学者们一直回避这样的研究。我们最近已经解决了这个问题，证明了需要几周时间的锂离子电池库仑效率的精确测量可以用来预测锂离子电池的循环寿命和寿命。该提案的一部分侧重于精确的库仑测量，了解细胞降解机制，并为这些降解途径发明解决方案。此外，还需要新的电极材料、电解液和添加剂，以进一步提高锂离子电池的能量密度、寿命和安全性，使其适用于电动汽车和电网储能。使用组合和高通量材料科学的方法可以加速这种搜索，在这种方法中，数百个样品被合成，然后在一个实验中进行测试。达恩集团是锂离子电池材料组合研究的世界领先者。这项提议得到了锂离子电池材料制造商3M和3M Canada以及E-One/Moli Energy Canada Ltd.的支持，E-One/Moli Energy Canada Ltd.是在整个工作过程中开发的新材料和技术的潜在用户。摘要的其他语言版本

Lithium-ion batteries have been in the marketplace for 20 years. They store the greatest energy per volume or per mass of any rechargeable battery technology compatible with portable electronics. They have excellent performance and storage characteristics, long charge-discharge cycle life, no memory effect and are available at low cost. As such, they have become the power source of choice for portable electronic devices like laptop computers, cell phones, digital cameras, power tools etc. Lithium-ion batteries are now targetted for electric vehicle and grid energy storage applications. These applications demand batteries that last from 10 (auto) to 30 years (grid). Testing new chemistries in cells under realistic conditions over these time frames is more than the length of a graduate student career (not to mention a professor!) so academics have shied away from such studies. We have recently addressed this problem by demonstrating that precision measurements of the coulombic efficiency of Li-ion batteries, which takes a few weeks, can be used to project the cycle life and lifetime of Li-ion cells. One part of this proposal focuses on precision coulometry measurements, understanding cell degradation mechanisms and inventing solutions for those degradation paths. Additionally, new electrode materials, electrolytes and additives are required to further improve the energy density, lifetime and safety of lithium-ion batteries so that they will be suitable for electrified vehicles and for grid-energy storage. This search can be accelerated using the methods of combinatorial and high throughput materials science where hundreds of samples are synthesized and then tested in a single experiment. The Dahn group is the world leader in combinatorial studies of lithium-ion battery materials. This proposal is supported by 3M and 3M Canada, who are manufacturers of lithium-ion battery materials and E-One/Moli Energy Canada Ltd., a potential user of the new materials and technology developed throughout the course of this work. Other Language Version of Summary