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电源，在解决化石燃料快速枯竭和环境严重恶化问题方面发挥着关键作用。 传统的LIB正在接近其容量极限。 人们迫切期待在提高能量和确保LIB安全性方面取得突破，以应用于电动汽车，便携式电子产品和大规模电网储能。 因此，该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有着深远的影响。 新型全固态LIB的成功开发需要新的能源材料，并在电极内或电极与电解质界面处发生的离子/电子转移，电荷分离，氧化还原反应方面对其进行理解。 电极和电解质材料在确定LIB的电化学性能中是必不可少的，包括比容量/面积容量、工作电压、循环能力、倍率性能和安全性。 因此，短期替代方案（1）设计和开发具有所需形貌和结构的新型电极/电解质材料，包括具有高比容量和循环稳定性的新型富锂正极材料、具有优异Li+传输性能的固态电解质和具有表面改性的Li金属负极材料;（ii）研究和分析这些新能源材料的电化学行为，包括Li+插入/脱嵌现象和分子水平上的固态电解质中的离子输运，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相关联，包括物理化学性质、孔结构、形态、晶体结构、组成和界面。 研究结果将用于进一步修改设计策略，以获得更好的能源材料。 将特别关注通过将性能与材料特性相关联来理解电化学行为。 该研究计划将在材料科学，纳米技术和清洁能源技术等广泛领域提供顶级HQP培训。 这项研究的执行将为研究人员、工业合作伙伴和投资者的全球合作创造许多机会。 该研究项目的成功不仅将使电池、电子、汽车和制造等相关行业受益，还将创造短期和长期就业机会，使加拿大成为快速增长市场的领导者。 全固态锂离子电池技术的实现将减少温室气体排放，为所有加拿大人提供重大的社会和环境效益。

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.