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.

二氧化碳排放和全球变暖的增加导致了全球生态恶化，并挑战了新颖，更好的方法，以满足世界上不断增长的能源需求，同时减少温室气体（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.为了提高电池性能，将通过基于石墨烯的材料的设施进行合理设计和开发硫的阴极和固体电解质。 将通过操纵石墨烯，包括石墨烯表面修饰，将杂原子引入石墨烯，将单原子催化剂（SAC）和石墨烯3维电极构建纳入石墨烯，将几种方法用于优化电池性能。该项目的总体可交付是一个全固体的LIS袋细胞（2 AH，400个周期保留90％的保留率），以评估开发的基于石墨烯的阴极和固体电解质的扩大能力，并证明制造LIS原型的可行性。电动汽车是减少空气污染的关键技术，也是为能源多样化和减少气体排放目标做出贡献的有希望的选择。随着全球电动汽车市场的预计规模，电池制造能力的扩展将在很大程度上由汽车市场的电气化驱动。通过促进一系列基于石墨烯的材料，我们认为LI具有潜在的能力，可以将锂离子电池技术施加的性能限制推向诸如成本，能源密度，循环寿命等诸如未来最有希望的未来商业化储能存储设备之类的指标上。