CAS: Magnetic moment-induced adaptability of vertically-oriented 1D electrochemical systems

CAS：垂直定向一维电化学系统的磁矩诱导适应性

• 批准号: 2203926
• 负责人: Luisa Whittaker-Brooks
• 金额: $ 46.75万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2203926&HistoricalAwards=false
• 关键词: CAS; Magnetic; moment; induced; adaptability

With support from the Macromolecular, Supramolecular, and Nanochemistry (MSN) Program in the Division of Chemistry, Luisa Whittaker-Brooks of the University of Utah is developing one-dimensional (1D) nanostructures for all solid-state electrochemical energy storage. While electrochemical systems can store significant amounts of energy, the charging and discharging cycles lead to irreversible changes in the structure and composition of the electrode and electrolyte, degrading performance. Dr. Whittaker-Brooks and her students will use magnetic fields to make electrochemical systems more resistant to irreversible changes, and their discoveries could lead to batteries that store more energy and degrade more slowly. The project will also contribute to the development of a National STEM (science, technology, engineering and mathematics) workforce by providing research opportunities for postdoctoral scholars, graduate, and undergraduate students, as well as high school students, and the team will develop science demonstrations to introduce the concepts and research results to K-12 students at local schools. Under this award, Luisa Whittaker-Brooks at the University of Utah will use non-covalent interactions to interface TiS2 (electrode) nanowires, Li10GeP2S12 (solid-state electrolyte), and self-doped perylene diimide organic small molecules (solid-electrolyte interphase modifier and magnetic moment inducers) to enable the design of magnetic moment-induced (non-metallic) vertically oriented 1D electrochemical systems where their electrochemical properties can be tuned under an applied magnetic field. The studies will integrate: (i) the synthesis and characterization of organic-inorganic heterostructures with tunable interfaces; (ii) elucidation of the electrochemical properties of heterostructures with an emphasis on interfacial charge/spin dynamics correlated to compositional and morphological characteristics; and (iii) the use of electron paramagnetic resonance (EPR) and magnetometry to investigate and control heterogeneities, tailor interphases, and guide ion/charge transport in model systems under a magnetic field. The studies could shed light on both materials design and modulation of fundamental physical phenomena by carefully elucidating the role of interfaces and solid-state crystal chemistries on the properties of organic-inorganic 1D heterostructures to promote adaptability, self-healing, control of the complex interphase region formed at dynamic interfaces, and the elimination of detrimental chemistries to extend the lifetime and improve the safety of electrochemical energy storage 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.

在化学系高分子、超分子和纳米化学 (MSN) 项目的支持下，犹他大学的 Luisa Whittaker-Brooks 正在开发用于全固态电化学储能的一维 (1D) 纳米结构。 虽然电化学系统可以存储大量能量，但充电和放电循环会导致电极和电解质的结构和成分发生不可逆的变化，从而降低性能。惠特克-布鲁克斯博士和她的学生将利用磁场使电化学系统更能抵抗不可逆的变化，他们的发现可能会导致电池存储更多能量并更慢地降解。该项目还将通过为博士后学者、研究生、本科生以及高中生提供研究机会，为国家 STEM（科学、技术、工程和数学）劳动力的发展做出贡献，并且该团队将开发科学演示向当地学校的 K-12 学生介绍概念和研究成果。根据该奖项，犹他大学的 Luisa Whittaker-Brooks 将使用非共价相互作用来连接 TiS2（电极）纳米线、Li10GeP2S12（固态电解质）和自掺杂苝二酰亚胺有机小分子（固体电解质界面改性剂）和磁矩感应器），以实现磁矩感应（非金属）垂直定向一维电化学系统的设计，其中它们的电化学性能可以在施加的磁力下进行调整 场地。这些研究将整合：（i）具有可调界面的有机-无机异质结构的合成和表征； (ii) 阐明异质结构的电化学特性，重点是与成分和形态特征相关的界面电荷/自旋动力学； (iii) 使用电子顺磁共振 (EPR) 和磁力测量来研究和控制异质性、定制界面并引导磁场下模型系统中的离子/电荷传输。 这些研究可以通过仔细阐明界面和固态晶体化学对有机-无机一维异质结构特性的作用来阐明材料设计和基本物理现象的调制，以促进适应性、自修复和复杂界面的控制动态界面处形成的区域，并消除有害化学物质，以延长电化学储能系统的使用寿命并提高其安全性。该奖项反映了 NSF 的法定使命，并通过评估被认为值得支持利用基金会的智力优势和更广泛的影响审查标准。

项目成果

Establishing Self‐Dopant Design Principles from Structure–Function Relationships in Self‐n‐Doped Perylene Diimide Organic Semiconductors

从自掺杂苝二酰亚胺有机半导体的结构与功能关系建立自掺杂设计原则

• DOI: 10.1002/adma.202204656
• 发表时间: 2022-09
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Powell, Daniel;Zhang, Xueqiao;Nwachukwu, Chideraa I.;Miller, Edwin J.;Hansen, Kameron R.;Flannery, Laura;Ogle, Jonathan;Berzansky, Ale;Labram, John G.;Roberts, Andrew G.;et al
• 通讯作者: et al

Precision intercalation chemistry: The next step for battery development?

精密插层化学：电池开发的下一步？

• DOI: 10.1016/j.matt.2023.03.008
• 发表时间: 2023-04
• 期刊: Matter
• 影响因子: 18.9
• 作者: Miller, Edwin J.;Whittaker
• 通讯作者: Whittaker