Functional hybrid powder as additive for electrochemical cells

Patent metadata

Field	Value
Publication number	US-12500226-B2
Application number	US-202217864279-A
Country	US
Kind code	B2
Filing date	Jul 13, 2022
Priority date	Jul 13, 2022
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A hybrid functional particle for use in an electrochemical cell that cycle lithium ions is provided. The hybrid functional particle includes a lithiated zeolite having a plurality of pores and a plurality of lithium-containing particles disposed within one or more pores of the plurality of pores of the lithiated zeolite. For example, the lithiated zeolite has a porosity ranging from about 10 vol. % to about 90 vol. %, and the lithium-containing particles can fill an amount ranging from about 1% to about 100% of a total porosity of the lithiated zeolite. The electrochemical cell includes first and second electrodes separated by a separating layer, and the hybrid functional particle may be disposed within one or both of the electrodes, coated on one or more sides of one or both of the electrodes, disposed within the separating layer, and/or coated on one or more surfaces of the separating layer.

First claim

What is claimed is:

1 . A hybrid functional particle for use in an electrochemical cell that cycle lithium ions, the hybrid functional particle comprising:
a lithiated zeolite comprising a plurality of pores and having a porosity greater than or equal to 10 vol. % to less than or equal to 90 vol. %; and a plurality of lithium-containing particles disposed within one or more pores of the plurality of pores of the lithiated zeolite, the lithium-containing particles filling greater than or equal to 1% to less than or equal to 100% of a total porosity of the lithiated zeolite, the plurality of lithium-containing particles selected from the group consisting of: lithium nitrate, lithium fluoride, lithium oxide, lithium peroxide, and combinations thereof.

2 . The hybrid functional particle of claim 1 , wherein the lithiated zeolite is defined by a zeolite framework and a plurality of cations dispersed therewithin, the zeolite framework being selected from the group consisting of: NAT, EDI, THO, ANA, YUG, GOO, MON, HEU, STI, BRE, FAU, MFI, LTL, LTA, and combinations thereof, the cations comprising Li + and NH 4 + .

3 . The hybrid functional particle of claim 1 , comprising greater than or equal to 5 wt. % to less than or equal to 40 wt. % of the lithium-containing particles.

4 . The hybrid functional particle of claim 1 , having a particle size greater than or equal to 100 nanometers to less than or equal 10 micrometers, and a specific surface area greater than or equal to 10 m 2 /g to less than or equal to 500 m 2 /g.

5 . An electrode assembly for an electrochemical cell that cycles lithium ions, the electrode assembly comprising:
a current collector; and an electroactive material layer disposed on the current collector, the electroactive material layer comprising:
a plurality of electroactive material particles; and
a plurality of hybrid functional particles, each of the hybrid functional particles having:
a lithiated zeolite comprising a plurality of pores and with a porosity greater than or equal to 10 vol. % to less than or equal to 90 vol. %; and
a plurality of lithium-containing particles disposed within one or more pores of the plurality of pores of the lithiated zeolite, the lithium-containing particles filling greater than or equal to 1% to less than or equal to 100% of a total porosity of the lithiated zeolite, the plurality of lithium-containing particles for at least one of the hybrid functional particles of the plurality of hybrid functional particles being selected from the group consisting of: lithium nitrate, lithium fluoride, lithium oxide, lithium peroxide, and combinations thereof.

6 . The electrode assembly of claim 5 , wherein
the electroactive material layer comprises:
greater than or equal to 90 wt. % to less than or equal to 99.9 wt. % of the electroactive material particles, and
greater than or equal to 0.1 wt. % to less than or equal to 10 wt. % of the hybrid functional particles;
the hybrid functional particle comprises greater than or equal to 5 wt. % to less than or equal to 40 wt. % of the lithium-containing particles; and the hybrid functional particle has a particle size greater than or equal to 100 nanometers to less than or equal 10 micrometers, and a specific surface area greater than or equal to 10 m 2 /g to less than or equal to 500 m 2 /g.

7 . The electrode assembly of claim 5 , wherein the lithiated zeolite is defined by a zeolite framework and a plurality of cations dispersed therewithin, the zeolite framework being selected from the group consisting of: NAT, EDI, THO, ANA, YUG, GOO, MON, HEU, STI, BRE, FAU, MFI, LTL, LTA, and combinations thereof, the cations comprising Li + and NH 4 + .

8 . The electrode assembly of claim 5 , wherein the plurality of hybrid functional particles is a first plurality of hybrid functional particles, the lithiated zeolite is a first lithiated zeolite, the lithium-containing particles are first lithium-containing particles, and the electrode further comprises:
a protective layer having an average thickness greater than or equal to 100 nanometers to less than or equal to 100 micrometers disposed on one or more surfaces of the electroactive material layer, the protective layer comprising a second plurality of hybrid functional particles, the second plurality of hybrid functional particles having:
a second lithiated zeolite comprising a plurality of pores and with a porosity greater than or equal to 10 vol. % to less than or equal to 90 vol. %, the second lithiated zeolite being the same as or different from the first lithiated zeolite; and
a plurality of second lithium-containing particles disposed within one or more pores of the plurality of pores of the second lithiated zeolite, the second lithium-containing particles filling greater than or equal to 1% to less than or equal to 100% of a total porosity of the second lithiated zeolite, the second lithium-containing particles being the same as or different from the first lithium-containing particles.

9 . The electrode assembly of claim 5 , wherein the electroactive material layer has a first surface disposed on the current collector with a first amount of the hybrid particles and a second surface opposite from the first surface having a second amount of the hybrid particles, wherein the first and second amounts are different and there is a gradient of the hybrid functional particles in the electroactive material layer from the first surface to the second surface.

10 . An electrochemical cell that cycles lithium ions, the electrochemical cell comprising:
a positive electrode comprising a plurality of positive electroactive material particles; a negative electrode comprising a negative electroactive material; and a separating layer disposed between the positive electrode and the negative electrode and having a ceramic coating disposed one or more surfaces of the separating layer, the ceramic coating comprising:
a plurality of hybrid functional particles, each of the hybrid functional particles having:
a lithiated zeolite comprising a plurality of pores and with a porosity greater than or equal to 10 vol. % to less than or equal to 90 vol. %; and
a plurality of lithium-containing particles disposed within one or more pores of the plurality of pore of the lithiated zeolite, the lithium-containing particles filling greater than or equal to 1% to less than or equal to 100% of a total porosity of the lithiated zeolite, the plurality of lithium-containing particles for at least one of the hybrid functional particles of the plurality of hybrid functional particles being selected from the group consisting of: lithium nitrate, lithium fluoride, lithium oxide, lithium peroxide, and combinations thereof.

11 . The electrochemical cell of claim 10 , wherein the ceramic coating has an average thickness greater than or equal to 100 nanometers to less than or equal to 100 micrometers.

12 . The electrochemical cell of claim 10 , wherein the lithiated zeolite is defined by zeolite framework and a plurality of cations dispersed therewithin, the zeolite framework being selected from the group consisting of: NAT, EDI, THO, ANA, YUG, GOO, MON, HEU, STI, BRE, FAU, MFI, LTL, LTA, and combinations thereof, the cations comprising Li + 0 and NH4 + .

13 . The electrochemical cell of claim 12 , wherein each of the hybrid functional particles further comprises greater than or equal to 5 wt. % to less than or equal to 40 wt. % of the lithium phosphate particles.

14 . The electrochemical cell of claim 10 , wherein each of the hybrid functional particles has a particle size greater than or equal to 100

Assignees

• Gm Global Tech Operations Llc

Inventors

• Xiao Xingcheng
• Cai Mei
• Zhao Yifan

Classifications

• H01M50/449

  having a layered structure · CPC title

• H01M50/443

  Particulate material · CPC title

• H01M50/434

  Ceramics · CPC title

• H01M50/491

  Porosity · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title