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US-20260128361-A1 - FUNCTIONAL ALIPHATIC AND/OR AROMATIC AMINE COMPOUNDS OR DERIVATIVES AS ELECTROLYTE ADDITIVES TO REDUCE GAS GENERATION IN LI-ION BATTERIES

US20260128361A1US 20260128361 A1US20260128361 A1US 20260128361A1US-20260128361-A1

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.

Inventors

  • Liwen Ji
  • Benjamin Park

Assignees

  • ENEVATE CORPORATION

Dates

Publication Date
20260507
Application Date
20250915

Claims (19)

  1. 1 - 10 . (canceled)
  2. 11 . A battery, the battery comprising: a cathode, an electrolyte, and an anode, wherein one or both of said cathode and said anode contain one or more functional aliphatic and/or aromatic amine compounds as electrolyte additives to reduce gas generation in said battery; and wherein said one or more functional aliphatic and/or aromatic amine compounds comprise silane, silazane or phosphazene compounds containing primary amine (R′NH 2 ), secondary amine (R′R″NH), or secondary cyclic amine groups.
  3. 12 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said one or both of said cathode and said anode by including the compounds in an electrode material slurry.
  4. 13 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said one or both of said cathode and said anode by soaking the electrode material in a solution of said functional aliphatic and/or aromatic amine compounds.
  5. 14 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises silane compounds containing primary amine (R′NH 2 ), secondary amine (R′R″NH), or secondary cyclic amine groups.
  6. 15 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises silazane compounds containing secondary amine (—NH) groups.
  7. 16 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises phosphazene compounds containing secondary amine (—NH) groups.
  8. 17 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds are selected from the group consisting of [3-(2-Aminoethylamino)propyl]trimethoxysilane (AEAPTMS); (3-Aminopropyl) trimethoxysilane (APTMS); 2,4,6-Trimethyl-2,4,6-trivinylcyclotrisilazane (TriMTVCTS); and Hexakis(allylamino)cyclotriphosphazene (HALCPZ).
  9. 18 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into an anode of a Si anode-based or carbon anode-based Li-ion battery.
  10. 19 . The battery according to claim 11 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into a cathode made from Ni-rich, lithium rich, nickel-rich, spinel oxide or high-voltage polyanionic compounds.
  11. 20 . 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 electrolyte additives to reduce gas generation in said battery; and wherein said one or more functional aliphatic and/or aromatic amine compounds comprise silane, silazane or phosphazene compounds containing primary amine (R′NH 2 ), secondary amine (R′R″NH), or secondary cyclic amine groups; wherein said one or both of said cathode and said anode is formed using, at least, the following steps: said electrode material is mixed to create a slurry; said one or more functional aliphatic and/or aromatic amine compound is added to said slurry; said slurry is coated on metal foil; and the coated metal foil is dried.
  12. 21 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said one or both of said cathode and said anode by including the compounds in an electrode material slurry.
  13. 22 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into said one or both of said cathode and said anode by soaking the electrode material in a solution of said functional aliphatic and/or aromatic amine compounds.
  14. 23 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises silane compounds containing primary amine (R′NH 2 ), secondary amine (R′R″NH), or secondary cyclic amine groups.
  15. 24 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises silazane compounds containing secondary amine (—NH) groups.
  16. 25 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds comprises phosphazene compounds containing secondary amine (—NH) groups.
  17. 26 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds are selected from the group consisting of [3-(2-Aminoethylamino)propyl]trimethoxysilane (AEAPTMS); (3-Aminopropyl) trimethoxysilane (APTMS); 2,4,6-Trimethyl-2,4,6-trivinylcyclotrisilazane (TriMTVCTS); and Hexakis(allylamino)cyclotriphosphazene (HALCPZ).
  18. 27 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into an anode of a Si anode-based or carbon anode-based Li-ion battery.
  19. 28 . The method according to claim 20 , wherein said one or more functional aliphatic and/or aromatic amine compounds are incorporated into a cathode made from Ni-rich, lithium rich, nickel-rich, spinel oxide or high-voltage polyanionic compounds.

Description

TECHNICAL FIELD Aspects of the present disclosure relate to energy generation and storage. More specifically, certain embodiments of the disclosure relate to a method and system for using functional aliphatic and/or aromatic amine compounds or derivatives as electrolyte additives to reduce gas generation in Li-ion batteries. BACKGROUND Conventional approaches for battery electrolytes may be costly, cumbersome, and/or inefficient—e.g., they may be complex and/or time consuming to implement, and may limit battery lifetime. Further limitations and disadvantages of conventional and traditional approaches will become apparent to one of skill in the art, through comparison of such systems with some aspects of the present disclosure as set forth in the remainder of the present application with reference to the drawings. BRIEF SUMMARY A system and/or method for using functional aliphatic and/or aromatic amine compounds and derivatives as electrolyte additives to reduce gas generation in Li-ion batteries, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. These and other advantages, aspects and novel features of the present disclosure, as well as details of an illustrated embodiment thereof, will be more fully understood from the following description and drawings. BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS FIG. 1 is a diagram of a battery with an anode, in accordance with an example embodiment of the disclosure. FIG. 2 shows the capacity retention (FIG. 2A) and normalized capacity retention (FIG. 2B) of Si-dominant anode//NCA cathode pouch full cells tested at 25° C. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % APTMS, in accordance with an example embodiment of the disclosure. FIG. 3 shows the capacity retention (FIG. 3A) and normalized capacity retention (FIG. 3B) normalized capacity retention of Si-dominant anode//NCA cathode pouch full cells tested at 60° C. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % APTMS, in accordance with an example embodiment of the disclosure. FIG. 4 illustrates Si-dominant anode//NCA cathode pouch full cells thickness measurement after 60° C. storage tests. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1.5 wt % APTMS, in accordance with an example embodiment of the disclosure. FIG. 5. is a photo of Si-dominant anode//NCA cathode pouch full cells after the 60° C. storage test without clamping for 4 weeks. The electrolytes used may be: (top) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (bottom) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1.5 wt % APTMS, in accordance with an example embodiment of the disclosure. FIG. 6 shows the capacity retention (FIG. 6A) and normalized capacity retention (FIG. 6B) of Si-dominant anode//NCA cathode pouch full cells tested at 25° C. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % AEAPTMS, in accordance with an example embodiment of the disclosure. FIG. 7 shows the capacity retention (FIG. 7A) and normalized capacity retention (FIG. 7B) of Si-dominant anode//NCA cathode pouch full cells tested at 60° C. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % AEAPTMS. in accordance with an example embodiment of the disclosure. FIG. 8 shows Si-dominant anode//NCA cathode pouch full cells thickness measurement after 60° C. storage tests. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1.5 wt % AEAPTMS, in accordance with an example embodiment of the disclosure. FIG. 9 is a photo of Si-dominant anode//NCA cathode pouch full cells after the 60° C. storage test without clamping for 4 weeks. The electrolytes used may be: (top) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (bottom) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1.5 wt % AEAPTMS, in accordance with an example embodiment of the disclosure. FIG. 10 shows the capacity retention (FIG. 10A) and normalized capacity retention (FIG. 10B) of Si-dominant anode//NCA cathode pouch full cells tested at 25° C. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % TriMTVCTS, in accordance with an example embodiment of the disclosure. FIG. 11 shows Si-dominant anode//NCA cathode pouch full cells thickness measurement after 60° C. storage tests. The electrolytes used may be: (dotted line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)−Control, (thick solid line) 1.2 M LiPF6 in FEC/EMC (3/7 wt %)+1 wt % T