GOALI - Collaborative Research: Chemically induced stresses and degradation mechanisms in ceramic materials for Li ion batteries

GOALI - 合作研究：锂离子电池陶瓷材料的化学诱导应力和降解机制

• 批准号: 1832808
• 负责人: Yue Qi
• 金额: $ 27.42万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2021-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1832808&HistoricalAwards=false
• 关键词: GOALI; Collaborative; Research; Chemically; induced

NON-TECHNICAL DESCRIPTION: This project focuses on surface damage layers that form on many of the oxide materials that are used in lithium-based batteries. Most of the research is designed to understand the formation of these layers, and to create strategies that can mitigate related degradation mechanisms in battery materials. The specific findings from this project will help to increase the lifetime of lithium-based batteries that are used in a variety of applications. Through the GOALI partner (General Motors), the work will contribute directly to industrial research on improved electrodes for high energy density lithium ion batteries for electric vehicles with zero emission. Knowledge transfer is occurring through both public dissemination and direct interactions with researchers at General Motors. TECHNICAL DETAILS: Many of the battery materials that can potentially improve the performance of lithium-based batteries are ceramics where surface damage layers (SDLs) cause serious limitations. For example, chemically and electrochemically induced structural changes that form surface films on layered cathode particles lead to substantial impedance rise and limited cycle life - to the extent that SDLs render these materials unusable after cycling. In all of these surface films, it is important to realize that a variety of factors lead to significant mechanical stresses, where the corresponding elastic energies interact with chemical and structural changes in ways that have not been addressed in most prior research. The need to develop fundamental knowledge about chemo-mechanical effects in SDLs and surface coatings is the primary motivation for the proposed research. Efforts at Brown University employ precise in situ measurements of stresses along with other experimental methods to develop novel approaches for probing a variety of complex phenomena where stress interactions with fundamental mechanisms are poorly understood (e.g., defect coupling, multicomponent diffusion, etc.). Interpretation of these data relies on building multiscale models informed by atomic scale simulations at Michigan State University. Students and faculty from both Universities are working directly with Dr. Yan Wu and other researchers at General Motors, in ways that expand educational outcomes and enhance knowledge transfer to industry. Via these direct interactions with industrial collaborators, the resulting new knowledge will be applied to commercially viable systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述：该项目重点研究锂电池中使用的许多氧化物材料上形成的表面损伤层。大多数研究旨在了解这些层的形成，并制定可以减轻电池材料相关降解机制的策略。该项目的具体发现将有助于延长各种应用中使用的锂电池的使用寿命。通过 GOALI 合作伙伴（通用汽车），这项工作将直接促进零排放电动汽车高能量密度锂离子电池改进电极的工业研究。知识转移是通过公共传播和与通用汽车研究人员的直接互动来实现的。技术细节：许多可以提高锂基电池性能的电池材料都是陶瓷，但陶瓷的表面损伤层 (SDL) 会造成严重限制。例如，化学和电化学诱导的结构变化在层状阴极颗粒上形成表面薄膜，导致阻抗大幅上升和有限的循环寿命，以至于 SDL 使这些材料在循环后无法使用。在所有这些表面薄膜中，重要的是要认识到多种因素会导致显着的机械应力，其中相应的弹性能以大多数先前研究中尚未解决的方式与化学和结构变化相互作用。需要发展有关 SDL 和表面涂层化学机械效应的基础知识是本项研究的主要动机。布朗大学致力于采用精确的应力原位测量以及其他实验方法来开发新方法来探测各种复杂现象，在这些现象中，应力与基本机制的相互作用知之甚少（例如，缺陷耦合、多组分扩散等）。这些数据的解释依赖于密歇根州立大学原子尺度模拟建立的多尺度模型。两所大学的学生和教师直接与吴彦博士和通用汽车的其他研究人员合作，扩大教育成果并加强知识向行业的转移。通过与工业合作者的直接互动，由此产生的新知识将应用于商业上可行的系统。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Wavelet Scattering Networks for Atomistic Systems with Extrapolation of Material Properties

• DOI: 10.1063/5.0016020
• 发表时间: 2020-06
• 期刊: The Journal of chemical physics
• 作者: Paul Sinz;M. Swift;Xavier Brumwell;Jialin Liu;K. Kim;Y. Qi;M. Hirn

Evaluation of The Electrochemo-Mechanically Induced Stress in All-Solid-State Li-Ion Batteries

• DOI: 10.1149/1945-7111/ab8f5b
• 发表时间: 2020-05
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: H. Tian;A. Chakraborty;A. Talin;P. Eisenlohr;Y. Qi

Composition, crystallography, and oxygen vacancy ordering impacts on the oxygen ion conductivity of lanthanum strontium ferrite

• DOI: 10.1039/d0cp00206b
• 发表时间: 2020-05-07
• 期刊: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
• 影响因子: 3.3
• 作者: Das, Tridip;Nicholas, Jason D.;Qi, Yue
• 通讯作者: Qi, Yue

Reversible planar gliding and microcracking in a single-crystalline Ni-rich cathode

• DOI: 10.1126/science.abc3167
• 发表时间: 2020-12-11
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Bi, Yujing;Tao, Jinhui;Xiao, Jie
• 通讯作者: Xiao, Jie

Cathode porosity is a missing key parameter to optimize lithium-sulfur battery energy density

• DOI: 10.1038/s41467-019-12542-6
• 发表时间: 2019-10-10
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Kang, Ning;Lin, Yuxiao;Cai, Mei
• 通讯作者: Cai, Mei