All-solid-state lithium-sulfur battery design via graphene-based materials

基于石墨烯材料的全固态锂硫电池设计

• 批准号: 561137-2020
• 负责人: Li, Ge
• 金额: $ 3.64万
• 依托单位: University of Alberta
• 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=722993
• 关键词: solid; state; lithium; sulfur; battery

The increasing carbon dioxide emission and global warming have resulted in worldwide ecological deterioration and challenges to find novel and better ways to meet the world's increasing needs for energy while reducing greenhouse gas (GHG). In Canada, the transportation sector was the second-largest source of GHG emissions in 2018. We propose this research project with a long-term goal of commercialized solid-state lithium-sulfur battery (LIS) that possesses high energy density, durability and safety toward increasing the future applications of electric vehicles (EVs), and short-term goals of all-solid LIS pouch cell fabrication and prototype assembly. To improve the battery performance, sulfur cathode and solid-electrolyte will be rationally designed and developed with the facilities of graphene-based materials. Several methodologies will be undertaken to optimize the battery performance by manipulating the graphene including graphene surface modification, introducing heteroatoms to graphene, incorporating single-atom catalysts (SACs) to graphene, and graphene 3-dimensional electrode building. The overall deliverable of this project is an all-solid LIS pouch cell (2 Ah, 90% retention for 400 cycles) to evaluate the scale-up capability of the developed graphene-based cathode and solid electrolytes and prove the feasibility of manufacturing a LIS prototype. EVs are a key technology to reduce air pollution and a promising option to contribute to energy diversification and GHG emissions reduction objectives. With the projected size of the global electric vehicle market, the expansion of battery manufacturing capacity will largely be driven by electrification in the car market. By facilitating a series of graphene-based materials, we believe LIS has the potential capability to push the boundaries beyond the performance limits imposed by Li-ion battery technology on indicators such as cost, energy density, cycle life, etc., considering as the most promising future commercialized energy storage devices.

二氧化碳排放量的增加和全球变暖导致全球生态恶化，并为寻找新颖且更好的方法来满足世界日益增长的能源需求同时减少温室气体 (GHG) 带来了挑战。在加拿大，交通运输业是2018年第二大温室气体排放源。我们提出这个研究项目的长期目标是商业化具有高能量密度、耐用性和安全性的固态锂硫电池（LIS）旨在增加电动汽车 (EV) 的未来应用，以及全固态 LIS 软包电池制造和原型组装的短期目标。为了提高电池性能，将利用石墨烯基材料的设施，合理设计和开发硫正极和固体电解质。 将采取多种方法通过操纵石墨烯来优化电池性能，包括石墨烯表面改性、向石墨烯引入杂原子、将单原子催化剂（SAC）纳入石墨烯以及石墨烯3维电极构建。该项目的总体交付成果是全固态LIS软包电池（2 Ah，400次循环后保留率为90%），以评估所开发的石墨烯基阴极和固体电解质的放大能力，并证明制造LIS的可行性原型。电动汽车是减少空气污染的关键技术，也是促进能源多样化和温室气体减排目标的一个有前景的选择。随着全球电动汽车市场规模的预计，电池产能的扩张将在很大程度上受到汽车市场电气化的推动。通过促进一系列石墨烯基材料的发展，我们相信LIS有潜力突破锂离子电池技术在成本、能量密度、循环寿命等指标上的性能限制。未来最有前途的商业化储能装置。