US12057575B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12057575-B2 |
| Application number | US-201816627137-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 29, 2018 |
| Priority date | Jun 30, 2017 |
| Publication date | Aug 6, 2024 |
| Grant date | Aug 6, 2024 |
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A silicon and sulfur battery and methods are shown. In one example, the silicon and sulfur battery includes a lithium chip coupled to a silicon electrode. In some examples, the silicon electrode is formed from silicon nanoparticles and carbon.
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What is claimed is: 1. A battery, comprising: a first electrode, including: a layer of silicon nanoparticles with a bottom surface in contact with a surface of a conductive substrate and a top surface opposite the bottom surface, wherein the layer of silicon nanoparticles includes an access opening to the conductive substrate through the layer of silicon nanoparticles from the top surface to the bottom surface; a lithium chip in contact with the layer of silicon nanoparticles at the top surface, and in contact with the surface of the conductive substrate in the access opening, wherein the lithium chip includes a chip bottom surface that is larger than the access opening; a second electrode including sulfur; and an electrolyte in contact with both the first electrode and the second electrode. 2. The battery of claim 1 , wherein the lithium chip is between the layer of silicon nanoparticles and the second electrode including sulfur. 3. The battery of claim 1 , wherein the first electrode further includes an amount of acetylene black particles. 4. The battery of claim 3 , wherein the first electrode further includes a poly acrylic acid matrix. 5. The battery of claim 4 , wherein the first electrode includes 40 wt% silicon nanoparticles, 25 wt% acetylene black particles, and 35 wt% poly acrylic acid matrix. 6. The battery of claim 1 , further including a microporous polymer separator between the first electrode and the second electrode. 7. The battery of claim 1 , wherein the layer of silicon na.noparticles is layered on a copper substrate. 8. The battery of claim 5 , wherein the second electrode further includes an amount of acetylene black particles. 9. The battery of claim 8 , wherein the second electrode further includes a poly acrylic acid matrix. 10. The battery of claim 1 , wherein the second electrode including sulfur includes a. sulfur containing layer on an aluminum substrate.
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