Positive plate and battery

The invention relates to the technical field of batteries, in particular to a positive plate and a battery comprising the positive plate. The positive plate comprises a positive current collector, a second coating located on one side or two sides of the positive current collector and a first coating located between the positive current collector and the second coating, the first coating comprises a lithium-sodium-cobalt oxide, and the second coating comprises a lithium-rich manganese-based material. The positive plate disclosed by the invention has low surface resistance and high rate performance; comprising the positive plate disclosed by the invention has low direct-current internal resistance, low expansion rate and good rate capability. 本发明涉及电池技术领域，具体涉及一种正极片以及包括该正极片的电池。正极片包括正极集流体、位于正极集流体一侧或两侧的第二涂层以及位于正极集流体和第二涂层之间的第一涂层，其中，第一涂层包括锂钠钴氧化物，第二涂层包括富锂锰基材料。本发明的正极片具有低面电阻和高倍率性能；包括本发明的正极片的电池具有低的直流内阻、低的膨胀率和良好的倍率性能。