NSF/FDA SIR: Safer (polymeric) batteries in medical devices and evolving regulatory framework

NSF/FDA SIR：医疗设备中更安​​全的（聚合物）电池和不断发展的监管框架

• 批准号: 2037835
• 负责人: Peter Kofinas
• 金额: $ 8.34万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2037835&HistoricalAwards=false
• 关键词: NSF; FDA; SIR; Safer; polymeric

Batteries play an important role in the overall function, reliability, and safety of many medical devices such as pacemakers, implantable cardioverter defibrillators, glucose monitoring devices, and wheelchairs. The insights gained in this one-year NSF/FDA Scholar-In-Residence fundamental research project will aid and inform the development of protocols that demonstrate safety and feasibility of polymer electrolytes for lithium batteries. Success of this project will help streamline the regulation of solid polymer electrolytes in medical devices as a safer alternative. In addition to the impacts on science, the project will also broadly impact engineering education, training students of different educational levels and from diverse backgrounds. Several initiatives are planned, including specific programs that assist in undergraduate and graduate education, graduate student mentoring, and training of high school students. The goal of this project is to better understand the electrochemical, transport, and safety properties of water-containing solid polymer electrolytes. A small amount of water acts as a super plasticizer of the polymer matrix and provides an alternative conduction pathway that significantly improves cation transport. Additionally, the inclusion of water is expected to have a significant impact on the safety of the resulting battery device. Specifically, the Investigator’s propose to study an aqueous solid polymer electrolyte (ASPE) consisting of varying amounts of polyacrylonitrile (PAN), water, and lithium salt as a model system to probe these questions. An investigation of these ASPEs will focus on determining how salt concentration, water concentration, and polymer molecular weight can affect ionic conductivity, cation transport, electrochemical stability, cell safety, and cell performance. Gaining insight into the water-dominant transport mechanism causing the enhanced electrochemical performance of the proposed ASPE systems will greatly benefit the design of the next generation of batteries for medical devices. Full cell devices will undergo safety testing that will help inform an emerging regulatory framework for assessing the safety of polymer electrolytes for use in medical devices.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.

电池在整体功能中起着重要的作用，以及许多医疗设备（例如起搏器），葡萄糖监测设备和轮椅。并为锂电学对科学产生影响的聚合物电解质的安全性和可行性提供了信息。 CHOOL学生的目标是更好地利用含水的固体聚合物选举的安全性。具有所得的电池设备的安全性。奥林格分子量可以影响离子电导率，曲态稳定性，细胞安全性，细胞安全性以及细胞性能。医疗设备。

项目成果

Water Domain Enabled Transport in Polymer Electrolytes for Lithium-Ion Batteries

• DOI: 10.1021/acs.macromol.0c01960
• 发表时间: 2021-03
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: Matthew D. Widstrom;O. Borodin;K. Ludwig;Jesse E. Matthews;Sahana Bhattacharyya;Mounesha G Garaga