| 摘要 |
A lithium ion battery with excellent cycle life and characteristics was obtained including an alkali transition metal oxoanion material as a cathode material and an electrolyte containing a sulfur trioxide amine complex additive. The electrolyte additive delays thermal decomposition of the electrolyte and is particularly suited to non-aqueous electrolytes. Additionally, the additive provides an improvement in battery capacity retention and decreased cell impedance after storage. Materials for the cathode are selected alkali transition metal oxoanion materials, including composite oxide materials of lithium and transition metal such as lithium metal phosphates, chosen for their high lithium-insertion potential, high theoretical capacity, low cost, ease of synthesis, and stability when used with common organic electrolyte systems. |
