Positive plate and lithium ion battery

The invention provides a positive plate and a lithium ion battery comprising the same. The positive plate comprises a current collector, a positive active material layer located on at least one side surface of the current collector, and a functional layer arranged between the current collector and the positive active material layer, and the functional layer is located on the edge of the current collector and along the thickness direction of the positive plate. The projection of the positive active material layer covers the whole projection of the functional layer, and the functional layer comprises inorganic particles and a first conductive agent. The invention provides a positive plate and a lithium ion battery comprising the same, which can solve the problem of lithium precipitation at the edge of a negative electrode and prolong the cycle life of a high-rate charge-discharge type lithium ion battery. 本发明提供了一种正极片及包括该正极片的锂离子电池。本发明的正极片包括集流体、位于所述集流体至少一侧表面的正极活性物质层、以及设置在所述集流体和所述正极活性物质层之间的功能层，所述功能层位于所述集流体边缘，且沿所述正