Publication number: 20230074377
Abstract: Disclosed is an active material for a secondary battery, the active material containing aggregates, each including a plurality of single particles, or a mixture of the aggregates with non-aggregated single particles, the active material including a first region having a relatively high content of an additional element (X) and a second region having a relatively low content of the additional element (X), wherein the first region is at least one region of a grain boundary formed whereby the surfaces of the single particles constituting the aggregate contact one another and a void (pore or gap) between the single particles, and/or a surface region of each single particle, wherein the additional element (X) includes at least one selected from the group consisting of Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La, and Si.
Type:
Application
Filed:
August 6, 2020
Publication date:
March 9, 2023
Inventors:
Hye Yun JUNG, Sung Kyun CHANG, Sang Hoon JEON, Sun Hye LIM, Jae Yeoung PARK, Doe Hyoung KIM