| abstract |
The present invention provides a positive pole piece and a solid-state battery containing the positive pole piece. The positive electrode sheet includes a positive current collector, an N-layer first positive-electrode active material layer, and an M-layer second positive-electrode active material layer, and the first positive-electrode active material layer comprises a polymer prepared from a polymer different from the prior art. The polymer electrolyte has both a binding function and a lithium-conducting function, which can replace the binder and solid electrolyte in the existing positive electrode sheet, can effectively improve and improve the lithium ion transmission performance, and reduce the battery's performance. Internal resistance; at the same time, the porosity of the positive electrode sheet containing the polymer electrolyte is low, which greatly reduces the pores and holes inside the positive electrode sheet, increases the content of positive active material per unit volume, and improves the transport of lithium ions and electrons , which can effectively improve the energy density, cycle performance and rate performance of the battery. |