Advanced Materials Design for High-Energy and Reliable Lithium-Ion Batteries

下一代锂离子电池（LIB）技术作为可再生能源存储系统和清洁能源，在解决化石燃料的快速枯竭和环境的严重恶化方面发挥着至关重要的作用。传统的lib正接近其容量极限。在电动汽车、便携式电子设备、大规模电网储能等领域的应用方面，希望在提高能量和确保安全性方面取得突破。因此，提出的研究计划的长期目标是开发具有高能量和可靠性的新型全固态锂离子电池。先进的能源材料对电池技术产生了深远的影响。新型全固态锂离子电池的成功开发需要新的能源材料，并从离子/电子转移、电荷分离、电极内或电极与电解质界面发生的氧化还原反应等方面对其进行理解。电极和电解质材料是决定锂离子电池电化学性能的关键，包括比容量/面容量、工作电压、可循环性、倍率能力和安全性。因此，本研究计划的短期目标（未来5年）是：(1)设计和开发具有理想形态和结构的新型电极/电解质材料，包括具有高比容量和循环稳定性的新型富锂阴极材料，具有优异Li+输运性能的固态电解质，以及具有改性表面的锂金属阳极材料；（ii）研究和分析这些新能源材料的电化学行为，包括分子水平上Li+的插入/脱插入现象和离子在固态电解质内的输运，以及表面和界面效应；（iii）将电化学行为与这些能源材料的微观结构和纳米结构联系起来，包括物理化学性质、孔隙结构、形态、晶体结构、组成和界面。该结果将用于进一步修改设计策略，以获得更好的能源材料。特别的重点将给予理解电化学行为的相关性能与材料的性质。该研究项目将在材料科学、纳米技术和清洁能源技术等广泛领域提供顶级的HQP培训。这项研究的实施将为与研究人员、工业伙伴和投资者的全球合作创造许多机会。这项研究计划的成功不仅将有利于电池、电子、汽车和制造业等相关行业，而且还将创造短期和长期的就业机会，这将使加拿大在快速增长的市场中处于领先地位。全固态锂电池技术的实现将减少温室气体排放，为所有加拿大人带来显著的社会和环境效益。

Next-generation lithium-ion battery (LIB) technologies play a critical role as renewable energy storage systems and clean power sources addressing fast depletion of fossil fuels and severe deterioration of environment. Conventional LIBs are approaching their capacity limit. A breakthrough is eagerly awaited in boosting the energy and ensuring the safety of LIBs towards applications of electric vehicles, portable electronics, and large-scale grid energy storage. Therefore, the LONG-TERM OBJECTIVE of the proposed research program is to develop novel all-solid-state lithium-ion batteries with high energy and reliability. Advanced energy materials have a profound impact on battery technologies. The successful development of novel all-solid-state LIBs requires new energy materials and understanding of them in terms of ions/electrons transfer, charge separation, redox reactions happening within the electrode or at the interface of electrode and electrolyte. Electrode and electrolyte materials are essential in determining the electrochemical performance of LIBs including specific/areal capacity, working voltage, cyclability, rate capability, and safety. Hence, the SHORT-TERM OBJECTIVES (next 5 years) of this research program are: (i) to design and develop novel electrode/electrlyte materials with desired morphology and structure, including new Li-rich cathode materials with high specific capacity and cycling stability, solid-state electrolyte with excellent Li+ transport properties, and Li metal anode material with modified surface; (ii) to study and analyze the electrochemical behaviors of these new energy materials, including Li+ insertion/de-insertion phenomena and the ion transport within solid-state electrolyte at the molecular level, as well as the surface and interfacial effect; (iii) to correlate the electrochemical behaviors with the microstructure and nanoarchitecture of these energy materials, including physico-chemical properties, pore structure, morphology, crystal structure, composition, and interfaces. The result will be used to further modify the design strategies for better energy materials. Special focus will be given to understand electrochemical behaviors by correlating the performance with materials properties. This research program will provide top-leveled HQP training in broad areas spanning materials science, nanotechnology and clean energy technologies. The execution of this research will create many opportunities for global collaborations with researchers, industrial partners and investors. The success of this research program will not only benefit related industries such as battery, electronics, automobile, and manufacturing, but also create both short- and long-term jobs, which positions Canada as a leader in the rapidly growing markets. The realization of all-solid-state LIB technologies will reduce greenhouse gas emission, providing significant social and environmental benefits to all Canadians.