Method and system for aromatic macrocyclic compounds (phthalocyanines) as cathode additives for inhibition of transition metal dissolution and stable solid electrolyte interphase formation

Patent metadata

Field	Value
Publication number	US-12211998-B2
Application number	US-202217947771-A
Country	US
Kind code	B2
Filing date	Sep 19, 2022
Priority date	Mar 27, 2020
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

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 LiNi 1-x M x O 2 where M=Co, Mn, or Al, Li-rich xLi 2 MnO 3 (1-x)LiNi a Co b Mn c O 2 , Li-rich layered oxides LiNi 1+x M 1−x O 2 where M=Co, Mn, or Ni, and spinel oxides LiNi 0.5 Mn 1.5 O 4 . 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.

First claim

The invention claimed is:

1. A lithium ion battery, the battery comprising:
a silicon-dominant anode, an electrolyte, and a cathode, wherein the cathode comprises a cathode active material and a phthalocyanine additive coordinated with a metal cationic center and electrochemically active functional groups;
wherein said cathode active material is selected from the group consisting of lithium nickel-based oxides; lithium iron-based oxides; lithium cobalt-based oxides and lithium manganese oxides;
wherein said silicon-dominant anode contains more than 50% silicon by weight;
wherein said phthalocyanine additive is present at a concentration of about 1-2% by weight of the cathode active material; and
wherein said phthalocyanine additive is selected from the group consisting 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.

2. The battery according to claim 1 , wherein the anode further comprises graphite and/or graphene.

3. The battery according to claim 1 , wherein the electrolyte comprises a liquid.

4. A method of forming a lithium ion battery, the method comprising:
forming a battery comprising a silicon-dominant anode, an electrolyte, a cathode, and a separator;
wherein the silicon-dominant anode is formed from an anode active material slurry wherein said silicon-dominant anode contains more than 50% silicon by weight; and
wherein said anode active material slurry is cast onto a foil and dried to form said silicon-dominant anode;
wherein the cathode comprises an cathode active material and a phthalocyanine additive coordinated with a metal cationic center and electrochemically active functional groups which are mixed to form a cathode active material slurry wherein said phthalocyanine additive is present at a concentration of about 1-2% by weight of the cathode active material;
wherein said cathode active material is selected from the group consisting of lithium nickel-based oxides; lithium iron-based oxides; lithium cobalt-based oxides and lithium manganese oxides; and
wherein said phthalocyanine additive is selected from the group consisting 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; and
wherein said cathode active material slurry is cast onto a foil and dried to form said cathode; and
wherein the silicon-dominant anode and cathode are sandwiched with the separator and electrolyte to form said lithium ion battery.

5. The method according to claim 4 , wherein the anode further comprises graphite and/or graphene.

6. The method according to claim 4 , wherein the electrolyte comprises a liquid.

Assignees

• Enevate Corp

Inventors

• Perera Sanjaya
• Ji Liwen
• Chang Jeremy
• Park Benjamin Yong

Classifications

• H01M10/058

  Construction or manufacture · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/625

  Carbon or graphite · CPC title

• H01M4/386

  Silicon or alloys based on silicon · CPC title