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1.发明公开
公开(公告)号：EP4155271A3
公开(公告)日：2023-04-12
申请号：EP22206781.1
申请日：2022-11-10
发明人： ZHOU, Chaoyi , XIANG, Qianxin , HUANG, Jin , YU, Ye , WANG, Lijuan , WU, Yang , HU, Ansheng
摘要： The invention belongs to the technical field of lithium ion battery and specifically relates to a cathode material of lithium ion battery, a preparation method and application thereof. The cathode material of the invention has a porous structure, wherein the pore volume of mesoporous with pore diameter of 2-20nm accounts for 90% or more of the total pore volume, comprising at least two sintering and at least two crushing step of the raw material after mixing. Compared with the conventional lithium-ion battery cathode material, the lithium-ion battery cathode material of the present invention contains mainly mesopores, and the pore size of mesopores is mainly in the range of 2-20nm, there are hardly large pores inside the particles, the distribution of pores between particles is relatively reasonable, which can provide a favorable channel for lithium ion transmission, so a high capacity can be provided and simultaneously the increase in impedance during the battery cycle is relatively small.
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2.发明公开
公开(公告)号：EP4155271A2
公开(公告)日：2023-03-29
申请号：EP22206781.1
申请日：2022-11-10
发明人： ZHOU, Chaoyi , XIANG, Qianxin , HUANG, Jin , YU, Ye , WANG, Lijuan , WU, Yang , HU, Ansheng
摘要： The invention belongs to the technical field of lithium ion battery and specifically relates to a cathode material of lithium ion battery, a preparation method and application thereof. The cathode material of the invention has a porous structure, wherein the pore volume of mesoporous with pore diameter of 2-20nm accounts for 90% or more of the total pore volume, comprising at least two sintering and at least two crushing step of the raw material after mixing. Compared with the conventional lithium-ion battery cathode material, the lithium-ion battery cathode material of the present invention contains mainly mesopores, and the pore size of mesopores is mainly in the range of 2-20nm, there are hardly large pores inside the particles, the distribution of pores between particles is relatively reasonable, which can provide a favorable channel for lithium ion transmission, so a high capacity can be provided and simultaneously the increase in impedance during the battery cycle is relatively small.
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