Battery, battery pack, and uninterruptible power supply
First Claim
1. 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, andwherein 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%.
1 Assignment
0 Petitions
Accused Products
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.
9 Citations
12 Claims
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1. A battery, comprising a cathode, a anode, and an electrolyte solution, wherein the cathode comprises a cathode active substance and a cathode current collector;
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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, andwherein 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%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification