MRI: Acquisition of Instrumentation for Ionic Conductivity Studies of Polymeric Electrolytes

MRI：购买用于聚合物电解质离子电导率研究的仪器

• 批准号: 0116159
• 负责人: Leslie Lyons
• 金额: $ 9.4万
• 依托单位: Grinnell College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0116159&HistoricalAwards=false
• 关键词: MRI; Acquisition; Instrumentation; Ionic; Conductivity

With support from the Major Research Instrumentation (MRI) Program, the Department of Chemistry at Grinnell College will acquire an electrochemical impedance instrument and a differential scanning calorimeter (DSC). The electrochemical impedance instrument will enable the principal investigator and undergraduates at Grinnell to carry out ionic conductivity studies of polymeric electrolytes; the DSC will facilitate the measurement of the thermal properties of the electrolytes. Differential Scanning Calorimetry is an extremely useful tool in modern analytical chemistry. Calorimetric analysis is used to measure the thermal energy (heat) exchange that occurs during molecular interactions and reactions. Thus DSC provides a very reliable and sensitive method for determining thermodynamic properties of materials such as changes in heat capacity of liquid and solid samples. Impedance spectroscopy measures the alternating current resistance, i.e., the impedance, of a sample as a function of frequency. Knowledge of thermodynamic properties and impedances is crucial to understanding the behavior of materials, such as polymer electrolytes, that show promise in microelectronics and lightweight, small batteries.

在主要研究仪器(MRI)计划的支持下，格林内尔学院化学系将获得一台电化学阻抗仪器和一台差示扫描量热仪(DSC)。电化学阻抗仪器将使格林内尔大学的首席研究员和本科生能够进行聚合物电解质的离子导电性研究；DSC将有助于测量电解质的热性质。差示扫描量热法是现代分析化学中一种非常有用的工具。量热分析用于测量分子相互作用和反应过程中发生的热能(热)交换。因此，DSC提供了一种非常可靠和灵敏的方法来确定材料的热力学性质，如液体和固体样品的热容变化。阻抗谱测量作为频率函数的样品的交流电阻，即阻抗。热力学性质和阻抗的知识对于理解材料的行为至关重要，例如聚合物电解质，这些材料在微电子和轻型小型电池中表现出了希望。