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.

该奖项由主要的研究工具（MRI）和化学仪器（CRIF）计划资助。马萨诸塞大学波士顿大学的Niya SA教授Robyn Hannigan，Michelle Foster，Nolan Flynn（Wellesley College）和Sarah Soltau（Bridgewater State University）获得了高分辨率，扫描电子显微镜（HRES SEM）的高分辨率（HRES SEM），并具有能量抑制式X射线光谱镜（Eds）。 SEM/EDS将电子束聚焦在样品上。电子与表面相互作用以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，例如表面或表面粗糙度上纳米颗粒的大小和形状。 这样的图像有助于了解材料的特性。一种应用是研究将硅作为锂离子电池的潜在更好的阳极材料。 另一项研究是研究二氧化钛，一种半导体，该二氧化钛用于染料敏化的太阳能电池以提高其效率。 该乐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，伦斯勒理工学院和邦克山社区学院。 它增强了研究课程教学中研究生和本科生的培训。扫描电子显微镜是一种强大的分析工具，用于鉴定各种物种的化学成分。它用于许多重要的研究领域。 与能源相关的项目包括将硅作为利离子电池和二氧化钛作为染料敏化太阳能电池的支撑材料的研究。正在进行多价离子电池研究，以了解如何从非水电站沉积镁。随着水性环境中的温度和酸化的变化，研究重点是基于碳酸盐的结构（双壳和甲壳类壳）的生物矿化。由金属颗粒组成的薄膜在纳米尺度上至少具有一个维度的金属颗粒具有正在研究的新型物理化学特性。潜在用途是在信息存储，生物传感和化学传感以及异质催化剂应用中进行。 其他研究寻求在控制条件下矩阵中对金属纳米颗粒的分布和组织的见解。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的审查标准通过评估来获得支持的。

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

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

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