Solid State Electrochemical Energy Storage Materials

固态电化学储能材料

• 批准号: RGPIN-2020-05093
• 负责人: Nazar, Linda
• 金额: $ 7.65万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748025
• 关键词: Solid; State; Electrochemical; Energy; Storage

Electrochemical energy storage has never been more important than today. The development of viable, long-term solutions that will meet global energy needs remains one of the most critical challenges facing the scienti?c community. Amid burgeoning energy costs and sustainability concerns, international focus on energy storage (witness the Nobel Prize this year) has rapidly gained momentum. During the course of our NSERC discovery grant research, we have made breakthrough discoveries that is changing the way electrochemists think about energy storage. Our initial work in this area was reported in Nature Materials, 2009 and described "a first" that kick-started the field of lithium-sulfur batteries, a field that has increased exponentially ever since. Moreover, this discovery helped point the way to a breakthrough in Li-oxygen batteries, and along with Na-ion electrochemistry has become the foundation for new approaches to "beyond Li-ion batteries". In this proposal we target the further development of these new technologies with a combination of fundamental solid state chemistry/ionics, electrochemistry and materials science necessary to bring about step-changes. Extension of the concepts upon which the breakthrough is based will be explored with system modifications for taking Li-S chemistry to a more sustainable solid state platform. Here we plan to both garner a deeper understanding of the electrochemistry as well as expand the range of reactivity and utility of our approach. This will be coupled with fundamental discovery of new solid state ion conductors (SSICs) to serve as solid state electrolytes. The efforts in SSICs will serve as the platform for a cutting-edge undertaking in all-solid state Li and Na-ion batteries, where achieving high ionic conduction and controlling interfaces are key. Our approach will weave innovative materials chemistry discovery with sophisticated operando techniques to probe working electrochemical cells. Novel Li and Na SSIC materials will be developed using our significant arsenal of solid state synthesis tools, along with computational and physico-chemical studies to elucidate the important factors that govern ion mobility. These ion conductors will be interfaced with new positive Li-ion and Na-ion electrode materials that will be discovered through the course of the project. With this approach, we hope to uncover fundamentally new yet lower cost, environmentally friendly energy storage solutions. Such developments will impact directly on fundamental science and also lead to practical innovations.

电化学储能从未像今天这样重要。开发满足全球能源需求的可行的长期解决方案仍然是科学界面临的最严峻的挑战之一。在不断增长的能源成本和对可持续发展的担忧中，国际社会对能源储存的关注（今年的诺贝尔奖就是见证）迅速升温。在我们的 NSERC 发现资助研究过程中，我们取得了突破性的发现，正在改变电化学家对能量存储的思考方式。我们在这一领域的初步工作发表在 2009 年《自然材料》杂志上，并描述了启动锂硫电池领域的“第一次”，此后该领域呈指数级增长。此外，这一发现为锂氧电池的突破指明了道路，并与钠离子电化学一起成为“超越锂离子电池”新方法的基础。 在本提案中，我们的目标是结合基础固态化学/离子学、电化学和材料科学来进一步开发这些新技术，以实现逐步变革。将通过系统修改来探索突破所依据的概念的扩展，以将锂硫化学引入更可持续的固态平台。在这里，我们计划既加深对电化学的了解，又扩大我们方法的反应范围和实用性。这将与用作固态电解质的新型固态离子导体（SSIC）的基本发现相结合。 SSIC 的努力将成为全固态锂离子电池和钠离子电池尖端事业的平台，其中实现高离子传导和控制界面是关键。我们的方法将创新材料化学发现与复杂的操作技术结合起来，以探测工作电化学电池。新型Li和Na SSIC材料将使用我们重要的固态合成工具库以及计算和物理化学研究来开发，以阐明控制离子迁移率的重要因素。这些离子导体将与在项目过程中发现的新型正极锂离子和钠离子电极材料连接。通过这种方法，我们希望发现全新的、成本更低、环保的能源存储解决方案。这些发展将直接影响基础科学，并带来实用创新。