Test pole piece, lithium battery and preparation method

The test pole piece comprises a base film and an electrode layer, the surface resistivity of the base film is larger than 6 omega.m < 2 >. M , the electrode layer is located on one side of the base film and comprises a voltage stabilizer, a conductive agent and a binder, the mass ratio of the voltage stabilizer to the conductive agent to the binder is a: b: c, a ranges from 15 to 25, b ranges from 0.3 to 0.6, and c ranges from 0.3 to 0.6. Therefore, the potentials of the positive and negative electrodes of the battery can be accurately measured through the test pole pieces. 本发明提出了测试极片、锂电池以及制备方法，包括：基膜，基膜的面电阻率大于6Ω·m2·m-1，电极层，电极层位于基膜的一侧，电极层包括电压稳定剂、导电剂和粘结剂，电压稳定剂的质量：导电剂的质量：粘结剂的质量＝a：b：c，其中，a为15-25，b为0.3-0.6，c为0.3-0.6。由此，可通过测试极片的设置进行电池正负极电位的准确测量。