公开(公告)号：US20240332621A1

公开(公告)日：2024-10-03

申请号：US18622165

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Hui CUI ,  Shikang LUO ,  Junqiang HAN ,  Chao TANG

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/525 ,  H01M2004/021 ,  H01M2004/028

Abstract: An electrochemical device includes a positive electrode plate and an electrolyte. The positive electrode plate includes a positive active material layer. The positive active material layer includes a positive active material and a positive electrode additive. The positive electrode additive includes at least one of lithium titanium aluminum phosphate, lithium lanthanum titanium oxide, lithium lanthanum tantalum oxide, lithium aluminum germanium phosphate, lithium lanthanum zirconium oxide, niobium-doped lithium lanthanum zirconium oxide, or tantalum-doped lithium lanthanum zirconium oxide. The electrolyte includes a compound represented by Formula (I). Based on a mass of the positive active material layer, a mass percent of the positive electrode additive is p %, satisfying: 0.1≤p≤1.2. Based on a mass of the electrolyte, a mass percent of the compound represented by Formula (I) is q %, satisfying: 0.1≤q≤12.