Functional aliphatic and/or aromatic amine compounds or derivatives as electrolyte additives to reduce gas generation in Li-ion batteries

Patent metadata

Field	Value
Publication number	US-12438181-B2
Application number	US-202117315006-A
Country	US
Kind code	B2
Filing date	May 7, 2021
Priority date	Mar 26, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Systems and methods for batteries comprising a cathode, an electrolyte, and an anode, wherein functional aliphatic and/or aromatic amine compounds or derivatives are used as electrolyte additives to reduce gas generation in Li-ion batteries.

First claim

The invention claimed is:

1. A method of forming a battery, the method comprising:
forming a battery comprising a cathode, an electrolyte, and an anode, wherein said one or both of said cathode and said anode contain one or more functional aliphatic and/or aromatic amine compounds as electrode additives to reduce gas generation in said battery; wherein said one or both of said cathode and said anode is formed using, at least, the following steps:
an electrode material is mixed to create a slurry;
said one or more functional aliphatic and/or aromatic amine compounds is added to said slurry;
said slurry is coated on metal foil; and
the coated metal foil is dried;
further wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said cathode where the cathode electrode material is Lithium Nickel Cobalt Aluminum Oxide (LiNi x Co y Al z O 2 , x+y+z=1); Lithium Nickel Cobalt Manganese Oxide (LiNi a Co b Mn c O 2 , a+b+c=1); or Lithium Nickel Cobalt Manganese Aluminum Oxide (Li[Ni p CO q Mn r Al s ]O 2 , p+q+r+s=1);
wherein said anode is a Si-dominant anode comprising more than 50% silicon by weight; and
wherein said one or more functional aliphatic and/or aromatic amine compounds is Hexakis(allylamino)cyclotriphosphazene (HALCPZ).

2. The method according to claim 1 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said cathode by including the compounds in an electrode material slurry.

Assignees

• Enevate Corp

Inventors

• Ji Liwen
• Park Benjamin

Classifications

• H01M4/628

  Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title

• H01M10/0567

  characterised by the additives · CPC title

• H01M4/386

  Silicon or alloys based on silicon · CPC title

• H01M4/583

  Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M4/587

  for inserting or intercalating light metals · CPC title