Detection of Free Radical Species in Metal Air Batteries & Organo-Metallic Complexes

金属空气电池中自由基种类的检测

• 批准号: RTI-2017-00640
• 负责人: Goward, Gillian
• 金额: $ 10.93万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616734
• 关键词: Detection; Free; Radical; Species; Metal

This proposal outlines the need for a benchtop electron paramagnetic resonance (EPR) spectrometer to facilitate characterization of the role and mechanism of reaction of unpaired electrons in a variety of molecules and electrochemical devices. In the context of the popular science, unpaired electrons create the “oxidants” against which “anti-oxidants” work. They are known to be highly reactive and often challenging to characterize. EPR is a perfect tool for such characterization, however EPR instruments used to be large, cumbersome beasts, with high upfront purchase costs. Recently, benchtop EPR spectometers have become available, enabling routine use of such instrumentation at affordable prices. The maintenance is negligible, as are the ongoing operational costs. Therefore, we request funding for a benchtop EPR instrument, to be housed within the nuclear magnetic resonance (NMR) facility at McMaster University, and available to any users of the NMR facility who have received EPR training, (which includes graduate students within the department of chemistry, and faculties of science and engineering), using a nominal user fee structure. Both the Goward and Emslie groups are active research teams, with large groups, who are very keen to have regular access to the data provided by EPR for ongoing projects. In the Emslie group there is an active research program on developing designer molecules that incorporate transition metals, and are utilized to create thin films for microelectronics applications. The research program in the Goward group focuses on the characterization of the lithium and sodium ion transport properties within Li+ and Na+ battery cathode materials, utilizing advanced solid-state NMR. Most recently, the Goward group have investigated a new type of battery materials, the so-called metal-air batteries, in which superoxide radicals are key intermediates in the reaction pathway. An in-house EPR spectrometer would provide direct benefit to both research groups, and would be readily available to students for training and regular use within the research programs described herein.

该提议概述了对台式磁性共振（EPR）光谱仪的需求，以促进角色和机械性较小的，不受欢迎的科学，在分子分子的各种分子的贡献中产生了“氧化剂”众所周知，h曾经表征，但是EPR仪器曾经是大型繁琐的野兽，最近购买成本很高。 ，将安置在McMaster Universe的磁性ANCE（NMR）设施中，并接受NMR设施的用户，他们接受了EPR培训，在化学系和科学与工程学院内的S） Goward和Emslie都是Arerearch团队，他们非常热衷于对F或Emslie Group提供的数据进行奇特的访问。对于锂+电池阴极材料y中的锂和钠离子的微观，Goward群已经研究了一种新型的电池材料，即所谓的金属空气电池在反应途径中将为两个研究小组提供直接的好处，并可以在此处描述的研究计划中为学生提供培训和定期培训的我们。