Lithium-Ion Batteries for Implanted Medical Devices

用于植入式医疗设备的锂离子电池

• 批准号: 6485071
• 负责人: VICTOR R KOCH
• 金额: $ 10万
• 依托单位: COVALENT ASSOCIATES, INC.
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-04-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6485071
• 关键词: biomedical device power system; biomedical equipment development; calorimetry; electrochemistry; electrolytes; energy source; implant; lithium; medical implant science

State-of-the-art rechargeable batteries are incapable of providing the high energy densities required in order to free the device-implanted patient from a tethered external power source. The ability to provide a left ventricular assisted device patient or implanted artificial heart patient with significant more time "off-tether" would greatly improve his or her quality of life. Therefore, the aim of our proposed research is to develop advanced electrolyte materials and formulations thereof that would safely enable the extraction of more energy from an implanted lithium- ion (Li-ion) rechargeable battery. Specifically, we proposed to prepare and evaluate a group of gel polymer electrolytes comprising ionic liquids that are non-flammable, electrochemically stable, and thermally robust. Li-ion cells incorporating the new electrolytes will be built and tested with a focus on establishing the intrinsic stability of the gel polymer electrolyte in direct contact with highly delithiated cathode materials. To this end we will employ differential scanning calorimetry to determine the onset of thermochemical reactions between cathode material and electrolyte as a function of the cathode's state of charge. If successful, we will embark on a program to build and quality prototype Li-ion batteries that will allow implanted devices to safely operate on internal power for longer period of time. PROPOSED COMMERCIAL APPLICATIONS: Not Available

最先进的可充电电池无法提供使植入设备的患者摆脱束缚的外部电源所需的高能量密度。为左心室辅助装置患者或植入式人工心脏患者提供显着更多的“脱离束缚”时间的能力将极大地改善他或她的生活质量。因此，我们提出的研究的目的是开发先进的电解质材料及其配方，以安全地从植入的锂离子（Li-ion）充电电池中提取更多的能量。具体来说，我们建议制备并评估一组包含不易燃、电化学稳定且耐热的离子液体的凝胶聚合物电解质。将构建和测试采用新型电解质的锂离子电池，重点是建立与高度脱锂的阴极材料直接接触的凝胶聚合物电解质的内在稳定性。为此，我们将采用差示扫描量热法来确定阴极材料和电解质之间热化学反应的开始，作为阴极充电状态的函数。如果成功，我们将启动一项项目来制造和质量原型锂离子电池，使植入设备能够在内部电源下安全运行更长时间。拟议的商业应用：不可用