| 摘要 |
An electric storage cell (10) comprises a zinc anode (12) and a sulfur cathode (14), wherein the zinc and the sulfur are in contact with an aqueous solution (22) containing sulfur during the process of battery discharge. In this invention, specific conditions for the aqueous sulfur electrolyte are chosen to overcome the normal ineffectiveness of zinc oxidation in the presence of aqueous zero valent sulfur. Normally, a zinc anode (12) cannot be oxidized in an aqueous solution containing sulfur, because the product of the discharge would be zinc sulfide. This zinc sulfide is a highly insoluble salt and creates a layer which passivates the zinc and renders it completely ineffective to battery discharge. The performance of the battery is made possible by high OH- and HS-ion concentrations formed by the addition of salts to the aqueous zero valent sulfur solution, and permits effective and efficient battery discharge. |
