US 10,522,869 B2Granted

Battery, battery pack, and uninterruptible power supply

AssigneesPositec Power Tools (Suzhou) Co., Ltd., Pu Chen

InventorsPu Chen, The Nam Long Doan, Xiaosong Luo

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Abstract

The present invention provides a battery, including a cathode, a anode, and an electrolyte solution. The cathode includes a cathode active substance and a cathode current collector. The electrolyte solution includes first metal ions and second metal ions. In a charging/discharging process, the first metal ions can be reversibly deintercalated-intercalated at the cathode, the second metal ions can be reduced and deposited as a second metal at the anode, and the second metal can be oxidized and dissolved back to the second metal ions. The anode includes a anode active substance and a anode current collector. A lead-containing substance is provided on a surface of the anode active substance and/or in the electrolyte solution. A mass ratio of lead in the lead-containing substance to the battery is not greater than 1000 ppm. The present invention can effectively improve a dendrite problem at a anode of a battery, prolong the cycle life of the battery, and improve the electrochemical performance and safety performance of the battery.

Claims12

Dependent claims

A battery, comprising a cathode, a anode, and an electrolyte solution, wherein the cathode comprises a cathode active substance and a cathode current collector;

the electrolyte solution comprises first metal ions and second metal ions;
in a charging/discharging process, the first metal ions are reversibly deintercalated-intercalated at the cathode, the second metal ions are reduced and deposited as a second metal at the anode, and the second metal is oxidized and dissolved back to the second metal ions;
the anode comprises a anode active substance and a anode current collector;
a composite cathode material, wherein the composite cathode material includes a cathode active substance and a coating layer, the cathode active substance includes a lithium ion intercalation/deintercalation compound, and the coating layer is at least one of metallic lead, lead monoxide, or lead tetroxide, wherein the cathode active substance comprises a modified lithium manganese oxide material, and the modified lithium manganese oxide material meets a general formula Li1+xMnyMzOk, wherein M is selected from Pb, −1≤x≤0.5, 1≤y≤2.5, 0<z≤0.1, and 3≤k≤6, and
wherein from a mass percentage of lead in the metallic lead and/or the lead oxide in the cathode active substance is in the range of 0.001%-10%.

2 more elements

Dependencies are inferred from the claim text.