Composite electrolytes for rechargeable lithium batteries

In the last two decades, considerable efforts were made to develop solid electrolytes for lithium rechargeable batteries. The conductivity of these electrolytes is marginal for many applications. In addition, they possess a low cationic transport number and poor interfacial stability with lithium electrodes. In view of these deficiencies, this paper explores a new technical approach which involves using grain boundaries as the conduction path for lithium ions. We also report preliminary data on two model systems: Li₃N-LiPO₃ and LiI-LiPO₃