US 12,412,928 B2
Gel electrolyte system for solid state battery
Qili Su, Shanghai (CN); Zhe Li, Shanghai (CN); Mengyan Hou, Shanghai (CN); Yong Lu, Shanghai (CN); and Haijing Liu, Shanghai (CN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Mar. 31, 2022, as Appl. No. 17/710,900.
Claims priority of application No. 202110929032.X (CN), filed on Aug. 13, 2021.
Prior Publication US 2023/0046608 A1, Feb. 16, 2023
Int. Cl. H01M 10/0565 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0085 (2013.01); H01M 2300/0091 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electrochemical cell that cycles lithium ions, the electrochemical cell comprising:
a first electrode comprising a first plurality of solid-state electroactive material particles and a first polymeric gel electrolyte, the first polymeric gel electrolyte comprising greater than 0 wt. % to less than or equal to about 10 wt. % of a first additive comprising a compound having an unsaturated carbon bond, a sulfur-containing compound, a halogen-containing compound, a methyl substituted glycolide derivative, a maleimide (MI), a compound containing an electron withdrawing group, and combinations thereof;
a second electrode comprising a second plurality of solid-state electroactive material particles and a second polymeric gel electrolyte that is different from the first polymeric gel electrolyte, the second polymeric gel electrolyte comprising greater than 0 wt. % to less than or equal to about 10 wt. % of a second additive that is different from the first additive; and
an electrolyte layer disposed between the first electrode and the second electrode, the electrolyte layer comprising a third polymeric gel electrolyte that is different from both the first polymeric gel electrolyte and the second polymeric gel electrolyte.