HIGH ENERGY LITHIUM RECHARGEABLE BATTERY SYSTEM

建议研究一种新的方法， 可再充电锂电池系统 人工心脏程序中能量的经皮传输， 用于心室辅助系统（VAS）。 新方法基于 开发了一种更高能的阴极材料， 放电过程中锂离子的局部化学嵌入机理 过程 在这种方法中，将使用特别制备的无定形三硫化物 单独或添加TiS 2作为高能阴极材料。 这 这种方法似乎非常有希望达到更高的速率能力 具有良好的可再充电性。 预计新方法可以提供可充电锂 实用能量密度在98-143 WH/Kg范围内的电池 相比之下，目前的镍镉电池仅为24-33 WH/Kg。 的 能量密度如此大的增加对于这一领域需求的重要性 几乎没有详细说明。 路上有很多重要问题需要解决 但在第一阶段，我们建议集中于 阴极的问题，它的能量密度和循环容量。 对 在此基础上，完整的细胞开发将在第三阶段进行， II用于VAS器械应用。

It is proposed to investigate a new approach towards a high energy rechargeable lithium battery system for use in percutaneous or transcutaneous transmission of energy in the artificial heart program e.g. for Ventricular Assist Systems (VAS). The new approach is based on the development of a more energetic cathode material which operates by the topochemical insertion mechanism of lithium ions during the discharge process. In this approach, a specially prepared amorphous trisulfide would be used alone or with an addition of TiS2 as a high energy cathode material. This approach appears very promising for reaching even higher rate capabilities with good rechargeability. It is anticipated that the new approach could provide rechargeable lithium batteries with practical energy densities in the range of 98-143 WH/Kg compared to only 24-33 WH/Kg for the present nickel-cadmium cells. The importance of such a large increase in energy density for this field needs hardly any elaboration. There are many important problems that need to be solved on the road towards practical hardware, but in Phase I, we propose to concentrate on the problem of the cathode, its energy density and cycling capacity. On this basis the complete cell development would then be undertaken in Phase II for the VAS device applications.