Collaborative Research: Probing and Tailoring the Cathode-Electrolyte Interfacial Chemistries for Sodium Ion Batteries

合作研究：探索和定制钠离子电池的阴极-电解质界面化学

• 批准号: 1912876
• 负责人: Qilin Dai
• 金额: $ 12.48万
• 依托单位: Jackson State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-15 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1912876&HistoricalAwards=false
• 关键词: Collaborative; Research; Probing; Tailoring; Cathode

There is a critical need for improved energy storage technologies for electric vehicles and large-scale integration of renewable electricity grid storage to improve domestic energy security. Currently, state-of-the-art energy storage technologies such as lithium ion batteries are insufficient in providing the performance requirements needed such as cost and energy density to enable broad use. Alternative battery chemistries could provide an avenue towards gains in energy density, durability, and cost for these applications. This fundamental research project addresses the use of sodium ion batteries as a potential low-cost and sustainable solution to large-scale electrochemical energy storage systems. However, the inferior cycle life of cathode electrode materials for this type of battery is a significant roadblock towards commercialization. This project addresses the issue with a collaborative experimental program that focuses on cathode electrode material synthesis methods and experimental characterization tools that can measure the processes occurring at the interface region of the cathode electrode and the battery electrolyte. Fundamental knowledge will result on these processes and will enable rational design strategies to increase the durability, energy density, and cycle life of this battery type. For broader impacts, the project?s partners will establish an energy storage research program at Jackson State University. An outreach program at each project institution will be enriched with educational modules and hands on activities for elementary school-age students with a learning disability in dyslexia via summer camps and learning centers and with enhanced parent participation.This project seeks to elucidate the interfacial degradation mechanisms of sodium cathode materials and to establish experimental approaches for tailoring and strengthening the cathode?electrolyte interface for sodium-ion batteries. The project will make use of advanced synchrotron X-ray and electron characterization tools to probe the battery chemistry in the temporally and spatially resolved environments. The project will improve the electrochemical kinetics of active particles and surface stability of cathode materials and thus their performance in sodium ion batteries. There is a need for a holistic study to understand the formation and evolution of the interfacial degradation as well as to quantitatively pinpoint its relationship with the surface oxygen reactivity and bulk redox chemistry. The doping approach will simultaneously mitigate the interfacial degradation and accelerate the bulk electrochemical kinetics. The research will accomplish the following objectives: (1) probing the multiscale interfacial chemical and structural transformations and investigating the relationship between sodium cathode surface chemistry, interfacial degradation, and electrochemical kinetics, (2) conducting spectroscopic and imaging measurements to spatially quantify the influence of the interfacial degradation on the bulk redox behavior of sodium cathode particles as a function of the state-of-charge, cycling history, and charging protocol, and (3) establishing approaches to tailor the cathode surface chemistry for mitigating the interfacial degradation and improving the sodium ion battery performance (e.g. energy density, cycle life, rate capability).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.

至关重要的是，需要改善电动汽车的能源储能技术，并大规模整合可再生电网存储以改善国内能源安全。当前，诸如锂离子电池之类的最先进的储能技术不足以提供所需的性能要求，例如成本和能量密度以实现广泛使用。替代电池化学可以为这些应用的能量密度，耐用性和成本增长提供途径。该基本研究项目介绍了将钠离子电池用作大规模电化学储能系统的潜在低成本和可持续解决方案。但是，这种类型的电池的阴极电极材料的下循环寿命是商业化的重要障碍。该项目通过协作实验程序解决了问题，该程序侧重于阴极电极材料合成方法和实验表征工具，该工具可以测量在阴极电极和电池电解液的界面区域发生的过程。基本知识将导致这些过程，并使理性的设计策略能够提高电池类型的耐用性，能量密度和循环寿命。对于更广泛的影响，该项目的合作伙伴将在杰克逊州立大学建立一个储能研究计划。每个项目机构的宣传计划将充满教育模块和动手活动，以通过夏令营和学习中心在阅读障碍中学习障碍的小学生，并随着父母的参与而增强。该项目旨在阐明该材料的界面降级机制，以实现sodion conterfulte sode sode sode sod sod sod sod sod？该项目将利用高级同步器X射线和电子表征工具来探测时间和空间分辨环境中的电池化学。该项目将改善活性颗粒的电化学动力学和阴极材料的表面稳定性，从而在钠离子电池中的性能。需要一项整体研究来了解界面降解的形成和演变，并定量地指出其与表面氧反应性和大量氧化还原化学的关系。掺杂方法将同时减轻界面降解并加速散装的电化学动力学。这项研究将实现以下目标：（1）探测多尺度的互面化学和结构转化，并研究钠天主道表面化学，界面降解和电化学动力学之间的关系，（2）进行光谱和成像测量，以空间量化了对跨性别剂量的跨跨跨跨跨剂的影响，使其构成了促进式促进的跨度促进式促进的启发式促进的启动，使其跨越了促进型的互联物的影响。收费，骑自行车的历史和充电协议以及（3）建立方法来量身定制阴极表面化学，以减轻互化的际降解并提高钠离子电池的性能（例如能量密度，周期，循环寿命，费率能力，费率能力）。这一奖项反映了NSF的法定任务和范围的范围，这是通过评估的范围，并且在范围内得到了范围的范围。

项目成果

MnO, Co and Ni Nanoparticle Synthesis by Oleylamie and Oleic Acid

油酰胺和油酸合成 MnO、Co 和 Ni 纳米粒子

• DOI: 10.2174/2666001601666211110093947
• 发表时间: 2022
• 期刊: Current Chinese Chemistry
• 作者: He, Wencai;Qi, Yifang;Erugu, Uppalaiah;Moore, Jaiden;Zhu, Xianchun;Han, Fengxiang;Tang, Jinke;Dai, Qilin
• 通讯作者: Dai, Qilin