- Patent Title: Method and system for aromatic macrocyclic compounds (phthalocyanines) as cathode additives for inhibition of transition metal dissolution and stable solid electrolyte interphase formation
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Application No.: US16833123Application Date: 2020-03-27
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Publication No.: US11456457B2Publication Date: 2022-09-27
- Inventor: Sanjaya D. Perera , Liwen Ji , Jeremy Chang , Benjamin Park
- Applicant: Enevate Corporation
- Applicant Address: US CA Irvine
- Assignee: Enevate Corporation
- Current Assignee: Enevate Corporation
- Current Assignee Address: US CA Irvine
- Agency: McAndrews, Held & Malloy, Ltd.
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M4/60 ; H01M10/054 ; H01M4/46 ; H01M4/62 ; H01M10/052 ; H01M4/131 ; H01M4/134 ; H01M4/38 ; H01M10/0525 ; H01M4/02

Abstract:
Systems and methods for aromatic macrocyclic compounds (Phthalocyanines) as cathode additives for inhibition of transition metal dissolution and stable solid electrolyte interphase formation may include an anode, an electrolyte, and a cathode, where the cathode comprises an active material and a phthalocyanine additive, the additive being coordinated with different metal cationic center and functional groups. The active material may comprise one or more of: nickel cobalt aluminum oxide, nickel cobalt manganese oxide, lithium iron phosphate, lithium cobalt oxide, and lithium manganese oxide, Ni-rich layered oxides LiNi1−xMxO2 where M=Co, Mn, or Al, Li-rich xLi2MnO3(1−x)LiNiaCobMncO2, Li-rich layered oxides LiNi1+xM1−O2 where M=Co, Mn, or Ni, and spinel oxides LiNi0.5Mn1.5O4. The phthalocyanine additive may include one or more of: cobalt hexadecafluoro phthalocyanine (Co-Pc-F), dilithium phthalocyanine (Li-Pc), cobalt(II) phthalocyanine, nickel(II) phthalocyanine-tetrasulfonic acid tetrasodium salt, titanium(IV) phthalocyanine dichloride, manganese(II) phthalocyanine, zinc phthalocyanine, aluminum phthalocyanine chloride, Iron(II) phthalocyanine, and silicon phthalocyanine dichloride.
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