Energy storage device
View Patent ↗An energy storage device comprising an anode, electrolyte, and cathode is provided. The cathode comprises a plurality of granules comprising a support material, an active electrode metal, and a salt material, such that the cathode has a granule packing density equal to or greater than about 2 g/cc. A cathode comprising greater than about 10 volume % total metallic content in a charged state of the cathode is also provided.
1. An energy storage device comprising an anode, electrolyte, and cathode, wherein the cathode comprises a plurality of granules comprising a support material, an active electrode metal, and a salt material, wherein a total metallic content of the cathode is greater than about 10 volume % in a charged state of the cathode, and wherein the support material comprises copper.
2. The energy storage device of claim 1 , wherein the metallic content of the granules is greater than about 14 volume % in the charged state of the cathode.
3. The energy storage device of claim 1 , wherein the support material comprises zinc and copper.
4. The energy storage device of claim 1 , wherein the support material comprises brass.
5. The energy storage device of claim 1 , wherein the active electrode metal comprises zinc.
6. The energy storage device of claim 1 , wherein the salt material is sodium chloride.
7. The energy storage device of claim 1 , wherein the cathode has a granule packing density equal to or greater than about 2 g/cc.
8. The energy storage device of claim 7 , wherein the cathode has a granule packing density in a range from about 2.0 g/cc to about 2.7 g/cc.
9. An energy storage device comprising an anode, electrolyte, and cathode, wherein the cathode comprises a plurality of granules comprising a support material, an active electrode metal, and a salt material, wherein a total metallic content of the cathode is greater than about 10 volume % in a charged state of the cathode and the cathode has a granule packing density equal to or greater than about 2 g/cc.
10. The energy storage device of claim 9 , wherein the granule packing density is in a range from about 2.0 g/cc to about 2.7 g/cc.
11. The energy storage device of claim 9 , wherein the plurality of granules has a multimodal size distribution.
12. The energy storage device of claim 11 , wherein the multimodal size distribution is a bimodal distribution.
13. The energy storage device of claim 11 , wherein a first mode of the multimodal size distribution is less than about 250 micrometers.
14. The energy storage device of claim 13 , wherein at least 30 volume % of the plurality of granules in the first mode has median size lower than about 250 micrometers.
15. The energy storage device of claim 11 , wherein a second mode of the multimodal size distribution is greater than about 250 micrometers.
16. The energy storage device of claim 15 , wherein at least 30 volume % of the plurality of granules in the second mode has median size greater than about 250 micrometers.
17. The energy storage device of claim 11 , wherein a second mode of the multimodal size distribution is greater than about 500 micrometers.