Positive plate capable of improving lithium nickel manganese oxide battery capacity and lithium nickel manganese oxide battery applying positive electrode plate

[0024] This embodiment provides a lithium nickel manganese oxide battery, including a battery main body, a negative electrode arranged on the battery main body and made of graphite, a positive electrode sheet arranged on the battery main body and corresponding to the negative electrode, and a battery filled in the battery main body. electrolyte in the

[0025] In terms of mass percentage, the positive electrode sheet contains the following components: 3wt% compound, 5wt% conductive agent, 3wt% binder, and a positive electrode active material composed of lithium nickel manganese oxide that occupies the remaining proportion;

[0026] The compound is lithium iron phosphate;

[0027] Correspondingly, lithium titanate, lithium vanadate or lithium peroxide are all the same as lithium iron phosphate, which can realize the extraction of lithium ions at a lower voltage; they can be substituted for each other when needed;

[0028] The conductive agent is carbon black;

[0029] The binder

[0033] Example 2 is basically the same as Example 1, the only difference is that the content of the compound is 5wt%.

[0035] Embodiment 3 is basically the same as Embodiment 2, the only difference is: the compound content is 8wt%.

[0036] refer to figure 1 , and in conjunction with embodiment 1, embodiment 2, and embodiment 3 and simultaneously add the lithium nickel manganese oxide battery used at the present stage to run at a voltage interval of 3.5 with a charge and discharge rate of C / 3; and obtain the battery used at the present stage, Embodiment 1, embodiment 2, and the specific capacity of its corresponding lithium nickel manganese oxide of embodiment 3;

[0037] At this time, lithium iron phosphate is completely oxidized to iron phosphate and does not participate in the electrochemical reaction, so the battery capacity comes entirely from lithium nickel manganese oxide. At the same time, as the amount of lithium iron phosphate in the positive electrode increases, the specific capacity of lithium nickel manganese oxide It will increase accordingly; lithium nickel manganese oxide is th