An electrochemical cell of either a primary or a secondary chemistry, is described. In either case, the cell has a negative electrode of lithium or of an anode material which is capable of intercalating and deintercalating lithium coupled with a positive electrode of a cathode active material. A dicarbonate compound is mixed with either the anode material or the cathode active material prior to contact with its current collector. The resulting electrode couple is activated by a nonaqueous electrolyte. The electrolyte flows into and throughout the electrodes causing the dicarbonate additive to dissolve in the electrolyte. The dicarbonate solute is then able to contact the lithium to provide an electrically insulating and ionically conducting passivation layer thereon.
本文介绍了一种初级或次级
化学电
化学电池。在这两种情况下,电池都有一个
锂负极或一个能够夹层和脱层
锂的阳极材料负极,以及一个阴极活性材料正极。在与集流器接触之前,先将
碳酸氢盐化合物与正极材料或负极活性材料混合。由此产生的电极偶由非
水性电解液激活。电解液流入电极并贯穿电极,使
碳酸氢盐添加剂溶解在电解液中。然后,
碳酸氢盐溶质能够与
锂接触,在
锂上形成电绝缘和离子导电的钝化层。