MRI: Acquisition of a High Resolution Scanning Electron Microscope to Enhance Research Collaborations and Educational Needs among Colleges and Universities in the New England Area

MRI：购买高分辨率扫描电子显微镜以增强新英格兰地区学院和大学之间的研究合作和教育需求

• 批准号: 1919919
• 负责人: Niya Sa
• 金额: $ 42.65万
• 依托单位: University of Massachusetts Boston
• 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: 2019-08-01 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1919919&HistoricalAwards=false
• 关键词: MRI; Acquisition; Resolution; Scanning; Electron

This award is funded by the Major Research Instrumentation (MRI) and Chemical Instrumentation (CRIF) programs. Professor Niya Sa from University of Massachusetts Boston and colleagues Robyn Hannigan, Michelle Foster, Nolan Flynn (Wellesley College) and Sarah Soltau (Bridgewater State University) have acquired a high resolution, scanning electron microscope (HRes SEM) with the energy-dispersive X-ray spectroscopy (EDS) capability. A SEM/EDS focuses a beam of electrons at a sample. The electrons interact with the surface to produce a visual image of the material and identify its chemical elements. These images reveal details of the material such as the size and shape of nanoparticles on the surface or surface roughness. Such images help to understand the properties of the material. One application is investigating the use of silicon as a potentially better anode material for a lithium ion battery. Another study is investigating titanium dioxide, a semiconductor, which is used in dye sensitized solar cells to improve their efficiency. The instrument is in a shared use facility available to other institutions in the local region including Bridgewater State University, Wellesley College, Emmanuel College, Bard College, Rensselaer Polytechnic Institute, and Bunker Hill Community College. It enhances the training of graduate and undergraduate students in research course instruction. The scanning electron microscope is a powerful analytical tool for identifying chemical composition qualitatively and semi-quantitatively of various species. It is being used in a number of important research areas. Energy related projects include investigations of silicon as an anode material for Li ion batteries and titanium dioxide as a support material for dye sensitized solar cells. Multivalent ion battery research is being pursued to learn how magnesium can be deposited from non-aqueous electrolytes. Research is focusing on the biomineralization of carbonate-based structures (bivalve and crustacean shells) as temperature and acidification changes in the aqueous environment. Thin films composed of metal particles with at least one dimension on the nanometer scale possess novel physicochemical properties which are being investigated. Potential uses are in information storage, biosensing and chemical sensing, as well as in heterogeneous catalyst applications. Other research seeks insights into distribution and organization of metal nanoparticles in a matrix under controlled conditions.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.

该奖项由主要研究仪器（MRI）和化学仪器（CRIF）项目资助。马萨诸塞大学波士顿分校的 Niya Sa 教授及其同事 Robyn Hannigan、Michelle Foster、Nolan Flynn（韦尔斯利学院）和 Sarah Soltau（布里奇沃特州立大学）获得了一台高分辨率扫描电子显微镜 (HRes SEM)，配备能量色散 X-射线光谱（EDS）能力。 SEM/EDS 将电子束聚焦在样品上。电子与表面相互作用，产生材料的视觉图像并识别其化学元素。这些图像揭示了材料的细节，例如表面纳米颗粒的尺寸和形状或表面粗糙度。 此类图像有助于了解材料的特性。一项应用正在研究使用硅作为锂离子电池的潜在更好的阳极材料。 另一项研究正在研究二氧化钛（一种半导体），它用于染料敏化太阳能电池以提高其效率。 该仪器位于当地其他机构的共享使用设施中，包括布里奇沃特州立大学、韦尔斯利学院、伊曼纽尔学院、巴德学院、伦斯勒理工学院和邦克山社区学院。 它加强了研究生和本科生研究课程教学的培训。扫描电子显微镜是定性和半定量鉴定各种物种化学成分的强大分析工具。它被用于许多重要的研究领域。 能源相关项目包括研究硅作为锂离子电池的阳极材料和二氧化钛作为染料敏化太阳能电池的支撑材料。正在进行多价离子电池研究，以了解如何从非水电解质中沉积镁。研究重点是随着水环境中温度和酸化的变化，碳酸盐基结构（双壳类和甲壳类动物的壳）的生物矿化。由至少一维纳米尺度的金属颗粒组成的薄膜具有正在研究的新颖的物理化学性质。潜在用途包括信息存储、生物传感和化学传感以及多相催化剂应用。 其他研究旨在深入了解受控条件下基质中金属纳米颗粒的分布和组织。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

Electrolyte Role in SEI Evolution at Si in the Pre-lithiation Stage vs the Post-lithiation Stage

锂化前阶段与锂化后阶段电解质在 Si 的 SEI 演变中的作用

• DOI: 10.1149/1945-7111/acb617
• 发表时间: 2023
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: Cora, Saida;Key, Baris;Vaughey, John;Sa, Niya
• 通讯作者: Sa, Niya

Evolution of the Dynamic Solid Electrolyte Interphase in Mg Electrolytes for Rechargeable Mg-Ion Batteries

• DOI: 10.1021/acsami.2c13037
• 发表时间: 2022-10-07
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Fan, Shengqi;Cora, Saida;Sa, Niya
• 通讯作者: Sa, Niya

DRIFTS investigation of toluene oxidation on CeO2 nanoparticles

• DOI: 10.1016/j.susc.2022.122042
• 发表时间: 2022-01
• 期刊: Surface Science
• 影响因子: 1.9
• 作者: Paul K. Huttunen;Daniela Labadini;G. Asselin;Sabrina S. Hafiz;Sumeyra Gokalp;M. D. Kipreos;Michelle Foster

A Systematic Electrochemical Investigation of a Dimethylamine Cosolvent-Assisted Nonaqueous Zinc(II) Bis(trifluoromethylsulfonyl)imide Electrolyte

• DOI: 10.1149/1945-7111/abe9cb
• 发表时间: 2021-03
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: G. Asselin;O. Paden;W. Qiu;Zicheng Yang;Niya Sa

In Situ Probing of Mass Exchange at the Solid Electrolyte Interphase in Aqueous and Nonaqueous Zn Electrolytes with EQCM-D

使用 EQCM-D 原位探测水性和非水性锌电解质中固体电解质界面的质量交换

• DOI: 10.1021/acsami.1c00565
• 发表时间: 2021
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Cora, Saida;Ahmad, Suzalmurni;Sa, Niya
• 通讯作者: Sa, Niya