Pulse charging of solid polymer electrolyte based batteries

固体聚合物电解质电池的脉冲充电

基本信息

批准号：
570614-2021
负责人：
Lessard, Benoit
金额：
$ 18.94万
依托单位：
University of Ottawa
依托单位国家：
加拿大
项目类别：
Alliance Grants
财政年份：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=723045
关键词：
Pulse charging solid polymer electrolyte

项目摘要

Lithium ion batteries currently a $26.1 billion USD market, however they can only achieve a specific energy of approximately 200 mAh g-1. However, replacing the graphite anode with Li metal, the batteries specific energy can be doubled. Lithium metal are very promising because Li has extremely high capacity (3860 mAh g-1), however the formation of Li dendrite have greatly hindered their practical application. GBatteries has developed a pulsed charging methodology which enables fast charge (up to 10x vs conventional) without detriment to cell performance or lifetime. Applying GBatteries charging protocols we propose to suppress dendrite growth using lithium metal based batteries to that can provide greater energy capacity and be safely operated with longer lifetimes. The proposal would bring together diverse and inclusive experts in Science and Engineering from 4 different universities across Canada. The team will develop new materials for use as solid and liquid electrolytes in lithium metal-based batteries as well as perform specialized characterization (during operation) to study the degradation mechanisms of these new materials and provide solutions for optimization of lifetime with high charge density. Canadian companies will be able to use this technology to create new products, thereby increasing revenue and market penetration. Great energy density and increased life span means smaller batteries that don't need to be replaced as often, which also provides additional environmental benefits to this growing e-waste problem. Finally, in addition to improved batteries, the technology can also reduce greenhouse gas emissions by enabling green technologies.

锂离子电池目前是261亿美元的市场，但是它们只能达到约200 mAh G-1的特定能量。但是，用LI金属代替石墨阳极，可以将特定的能量加倍。锂金属非常有前途，因为Li的容量极高（3860 mAh G-1），但是Li Dendrite的形成极大地阻碍了其实际应用。 GBATTERIES开发了一种脉冲充电方法，可以在不损害细胞性能或寿命的情况下快速充电（最高10倍与常规）。应用GBATTERIES充电协议，我们建议使用基于锂金属的电池抑制树突生长，从而可以提供更大的能量能力，并在寿命更长的时间内安全地运行。该提案将汇集来自加拿大4个不同大学的科学和工程专家的多样化和包容性专家。该团队将开发新材料，以用作锂金属电池中的固体和液体电解质，并执行专业表征（在操作过程中），以研究这些新材料的降解机制，并提供了用于优化具有高电荷密度寿命的解决方案。加拿大公司将能够使用这项技术来创建新产品，从而增加收入和市场渗透率。强大的能量密度和增加的寿命意味着不需要经常更换的较小的电池，这也为这一不断增长的电子废物问题提供了额外的环境利益。最后，除了改进电池外，该技术还可以通过启用绿色技术来减少温室气体排放。