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US 2019/0245199 A1Published application
Positive active material and lithium-ion battery
AssigneeNingde Amperex Technology Limited
InventorsQiao Zeng, Kefei Wang
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AssigneeNingde Amperex Technology Limited
InventorsQiao Zeng, Kefei Wang
Estimating the term…
The present application provides a positive active material, a positive electrode and a lithium-ion battery. The positive active material comprising a first particle and a second particle, wherein the first particle has a chemical formula of LieCogM1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j, the element M is at least two selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, the element N is at least one selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8≤e≤1.2, 0<g<1, −0.1≤i≤0.2, 0.8≤f≤1.2, 0<h<1, −0.1≤j≤0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles. The positive active material of the present application has a good stability and can improve the capacity retention rate of the lithium-ion battery.
A positive active material, comprising a first particle and a second particle, wherein the first particle has a chemical formula of LieCogM1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j, the element M is at least two selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, the element N is at least one selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8≤e≤1.2, 0<g<1, −0.1≤i≤0.2, 0.8≤f≤1.2, 0<h<1, −0.1≤j≤0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles.
A positive electrode, wherein comprising a positive active material, wherein the positive active material comprising a first particle and a second particle, wherein the first particle has a chemical formula of LieCogM1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j, the element M is at least two selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, the element N is at least one selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8≤e≤1.2, 0<g<1, −0.1≤i≤0.2, 0.8≤f≤1.2, 0<h<1, −0.1≤j≤0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles.
A lithium-ion battery, wherein comprising a positive electrode with a positive active material, wherein the positive active material comprising a first particle and a second particle, wherein the first particle has a chemical formula of LieCogM1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j, the element M is at least two selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, the element N is at least one selected from a group consisting of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8≤e≤1.2, 0<g<1, −0.1≤i≤0.2, 0.8≤f≤1.2, 0<h<1, −0.1≤j≤0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles.
Dependencies are inferred from the claim text.