Solvated Electron Secondary Lithium Electrodes for High Energy Density Batteries

使用溶剂化电子的先进二次电池系统 将优化电极。 研究的锂电极 由最初溶解在液氨中的锂组成， 给出“溶剂化电子”或“青铜”溶液。 该液体负极活性材料的容纳， 与电池中存在的非水电解质接触 正电极隔室通过使用 嵌锂导电陶瓷膜 一般组成为LixWO 2（0.1 x 1;0）。 二次 电化学电池具有以下一般配置： Li、NH3/LixWO2/LiCF3SO3、PC/TiS2 和 LiNH3/LixWO2/LiCF、CuCl2、SO2、CH3CN/C 在第一阶段确定了各自的开放- 2.5和3.4V的电路电位，电化学 可逆的，理论能量密度分别为454和929 Wh/kg，基于液氨中的20 m/o锂。 可以从电池预测的高能量密度 将这种新型锂电极与它们的 预期的长循环寿命，使他们有吸引力的候选人， 诸如公用事业负载均衡、电力 车辆推进和航空航天电源。

Advanced secondary battery systems using a solvated electron electrode will be optimized. The lithium electrode investigated consisted of lithium initially dissolved in liquid ammonia to give either a "solvated electron" or "bronze" solution. Containment of this liquid negative active material from direct contact with a nonaqueous electrolyte present in the cell positive electrode compartment is addressed via the use of a lithium intercalated electronically conducting ceramic membrane of the general composition LixWO2 (0.1 x 1;0). Secondary electrochemical cells having the general configuration: Li,NH3/LixWO2/LiCF3SO3,PC/TiS2 and LiNH3/LixWO2/LiCF,CuC12,SO2,CH3CN/C were identified during Phase I which possessed respective open- circuit potentials of 2.5 and 3.4V, were electrochemically reversible and had theoretical energy densities of 454 and 929 Wh/kg based upon 20 m/o lithium in liquid ammonia. The high energy densities that can be predicted from batteries incorporating this novel lithium electrode together with their anticipated long cycle life, make them attractive candidates for such varied applications as utility load leveling, electric vehicle propulsion and aerospace power sources.