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US 12,080,883 B2Granted
Ion permeable composite current collectors for metal-ion batteries and cell design using the same
AssigneeSila Nanotechnologies, Inc.
InventorsGleb Yushin, Eugene Michael Berdichevsky, Bogdan Zdyrko, Alexander Thomas Jacobs
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Abstract
A Li-ion battery cell, among other materials, components, and techniques, is provided that includes ion-permeable anode and cathode electrodes, an electrolyte ionically coupling the anode and the cathode, a separator electrically separating the anode and the cathode, and a sacrificial, high-capacity Li composition for providing Li to at least one of the electrodes.
Claims21
A Li-ion battery cell, comprising:
- a composite current collector comprising pores;
- a second current collector;
- a Li-ion permeable anode on the composite current collector;
- a Li-ion permeable cathode on the second current collector;
- an electrolyte comprising an organic solvent ionically coupling the anode and the cathode;
- and
- a separator electrically separating the anode and the cathode;
- wherein the anode comprises a composite active material composition, the composite active material composition comprising first active material particles that exhibit specific capacity of at least 400 mAh/g and second active material particles comprising graphite that exhibit specific capacity that is less than or equal to 372 mAh/g;
- and
- wherein at least some of the second active material particles are in the pores of the composite current collector as part of a filler material;
- wherein at least some of the first active material particles are electrically connected to the composite current collector and are outside of the pores of the composite current collector;
- and
- wherein the pores are smaller than the first active material particles.
10 more elements
Dependencies are inferred from the claim text.