RECHARGEABLE LI ION CELLS FOR VAS APPLICATION

适用于 VAS 应用的可充电锂离子电池

• 批准号: 2910639
• 负责人: VICTOR R KOCH
• 金额: $ 34.27万
• 依托单位: COVALENT ASSOCIATES, INC.
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2910639
• 关键词: biomedical device power system; biomedical equipment development; carbonates; clinical biomedical equipment; electrochemistry; electrodes; electrolytes; implant; lithium; solvents

DESCRIPTION (Adapted from applicant's abstract): Rechargeable lithium- ion batteries are of great interest as advanced power sources for medically implanted and external devices owing to their high theoretical volumetric energy density. In Phase I it was demonstrated that novel, stable, alkyl carbonate solvents synthesized in-house afforded high stability at the graphite anode upon cycling. The investigators showed that their electrolytes comprising these new solvents could substantially outperform the benchmark state-of-the-art electrolytes for lithium-ion batteries. Phase II research will focus on additional solvent synthesis, the conditions of which were determined in Phase I. They will also conduct a mechanistic study of the beneficial interfacial properties afforded by these novel solvents at the anode. Finally, they will fabricate and subject to long term cycling at physiological temperature cells utilizing these novel solvents, graphite anode and LiCoO2 or LiMn2O4 spinel cathode materials. Lithium-ion batteries developed in this project will potentially manifest characteristics of both higher power in a smaller package along with excellent cycle life for VAS applications. PROPOSED COMMERCIAL APPLICATION: Not available.

描述(改编自申请人的摘要)：可充电锂- 离子电池作为一种先进的能源受到人们的极大关注 医用植入物和外部装置由于其高度的理论性 体积能量密度。 在第一阶段，证明了新的、稳定的烷基碳酸酯 内部合成的溶剂在石墨中具有很高的稳定性 自行车上的阳极。研究人员表明，他们的电解液 包含这些新溶剂的性能会大大超过 基准最先进的锂离子电池电解液。 第二阶段的研究将集中在额外的溶剂合成上， 其条件在第一阶段确定，他们还将进行 对提供的有益界面性质的机理研究 通过在阳极上使用这些新的溶剂。最后，他们将捏造和 在生理温度下可长时间循环 利用这些新的溶剂，石墨阳极和LiCoO2或LiMn2O4 尖晶石正极材料。在此开发的锂离子电池 项目将潜在地表现出两个更高权力的特征 在更小的封装中，VAS具有出色的循环寿命 申请。 建议的商业应用：不可用。