Understanding the Reactive Evolution of Ion-Battery Interfaces through a Versatile Single-Site Ionic Interrogation and Imaging Toolset

通过多功能单点离子询问和成像工具集了解离子电池界面的反应演化

• 批准号: 1709391
• 负责人: Joaquin Rodriguez Lopez
• 金额: $ 36万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1709391&HistoricalAwards=false
• 关键词: Understanding; Reactive; Evolution; Ion; Battery

This project is funded by the Chemical Imaging Program of the Chemistry Division. Professor Joaquin Rodriguez Lopez of the University of Illinois at Urbana-Champaign is developing new tools and techniques for imaging chemical reactions occurring on energy-dense battery electrodes with the intention of improving their performance and safety. To meet the challenge of exploring complex reactions on battery interfaces, the project utilizes a powerful approach to independently address redox and ionic reactivity. Advanced concepts on battery materials are fully integrated into an educational and outreach plan that introduces the local undergraduate and K-12 Hispanic population to learning opportunities in energy science. The results of this project inform guidelines for designing better batteries and respond to the NSF?s mission of serving the national interest by advancing the progress of energy sciences and by allowing the USA to remain at the forefront of battery technologies. This project focuses on elucidating the early signs, evolution, and consequences of uneven chemical reactivity on carbon and silicon battery interfaces as these strongly impact cycling performance, materials utilization, and risk of catastrophic failure. In situ methods for the localized measurement of ion insertion reactions and of interfacial redox reactivity are being developed. Correlating these two aspects helps to identify and address the factors that lead to battery underperformance at the level of single sites and nanostructures. An educational and outreach plan developed by Prof. Rodriguez Lopez takes each contribution towards the research goals as a teaching and learning opportunity. Undergraduate students participate in the development of demonstration kits and computational tools related to electrochemical energy that are delivered to local high school and to K-12 Hispanic students through collaborations with teacher and student organizations. This project has a broad societal impact as it addresses the discovery of phenomena that lead to real-world performance concerns on everyday energy technologies and involves the future workforce in the solution of these energy-related challenges.

该项目由化学部的化学成像计划资助。伊利诺伊大学厄巴纳-香槟分校的Joaquin Rodriguez洛佩斯教授正在开发新的工具和技术，用于成像能量密集型电池电极上发生的化学反应，旨在提高其性能和安全性。为了应对探索电池界面上复杂反应的挑战，该项目采用了一种强大的方法来独立解决氧化还原和离子反应性。电池材料的先进概念完全融入了教育和推广计划，向当地本科生和K-12西班牙裔人口介绍能源科学的学习机会。该项目的结果为设计更好的电池提供了指导方针，并对NSF？美国的使命是通过推动能源科学的进步和使美国保持在电池技术的前沿来服务于国家利益。 该项目的重点是阐明碳和硅电池界面上不均匀化学反应的早期迹象，演变和后果，因为这些强烈影响循环性能，材料利用率和灾难性故障的风险。离子插入反应和界面氧化还原反应的局部测量的原位方法正在开发中。将这两个方面联系起来有助于识别和解决导致电池在单个位点和纳米结构水平上表现不佳的因素。Rodriguez洛佩斯教授制定的教育和推广计划将每一项对研究目标的贡献作为教学和学习的机会。本科生参与开发与电化学能源相关的演示工具包和计算工具，这些工具通过与教师和学生组织的合作提供给当地高中和K-12西班牙裔学生。该项目具有广泛的社会影响，因为它解决了导致日常能源技术现实世界性能问题的现象的发现，并使未来的劳动力参与解决这些能源相关挑战。

项目成果

Probing Graphene Interfacial Reactivity via Simultaneous and Colocalized Raman–Scanning Electrochemical Microscopy Imaging and Interrogation

通过同步共定位拉曼扫描电化学显微镜成像和询问探测石墨烯界面反应性

• DOI: 10.1021/acs.analchem.8b00730
• 发表时间: 2018
• 期刊: Analytical Chemistry
• 影响因子: 7.4
• 作者: Schorr, Noah B.;Jiang, Annie G.;Rodríguez-López, Joaquín
• 通讯作者: Rodríguez-López, Joaquín

Tracking Passivation and Cation Flux at Incipient Solid‐Electrolyte Interphases on Multi‐Layer Graphene using High Resolution Scanning Electrochemical Microscopy

• DOI: 10.1002/celc.202101445
• 发表时间: 2022-03
• 期刊: ChemElectroChem
• 影响因子: 4
• 作者: Yunxiong Zeng;Z. Gossage;Dipobrato Sarbapalli;Jingshu Hui;J. Rodríguez‐López