POSITIVE ELECTRODE COMPOSITIONS AND ARCHITECTURES FOR AQUEOUS RECHARGEABLE ZINC BATTERIES, AND AQUEOUS RECHARGEABLE ZINC BATTERIES USING THE SAME

摘要

Provided are rechargeable batteries, positive electrodes, and methods for manufacturing rechargeable batteries and positive electrodes. A rechargeable battery as disclosed includes a zinc metal negative electrode, an electrolyte having a pH between ~4 and ~6, and a positive electrode. The positive electrode includes a current collector and a primer coating layer applied to the current collector to form a primer-coated current collector for protecting the current collector from the electrolyte. The primer coating layer includes a binder and a conductive filler. The positive electrode further includes a positive electrode composite layer applied to the primer coating layer. The positive electrode composite layer includes a hydrophilic binder, a conductive additive, and a material that undergoes reversible faradaic reactions with zinc ions.