Featured image: Tesmanian
After Tesla announced the upcoming Battery Day and Annual Shareholders Meeting, speculation immediately began. And the speculative excitement continues, for good reason: Tesla chose a very interesting background image for the announcement. If we enlarge the background and enhance the contrast, there are some hints of battery chemistry, or possibly nanowires.
Amprius Technologies. Amprius manufactures and distributes batteries, and their research and development is dedicated to the silicon nanowire anode.
Previously, some community members indeed suggested that this image looks like nanowires. Others have noticed that the image is similar to the process that occurs in a battery cell that uses tabless electrode technology.
Silicon nanowire tech company that moved to across the street from #Tesla in Fremont. Battery day anouncement image also thought to look like a nanowire. @WholeMarsBlog @GerberKawasaki https://t.co/Hq2o0qrjaz— Driving Delta (@Mars4x4) August 24, 2020
On the map, the location of all buildings looks like this:
The buildings are in close proximity to each other, which could indicate a cooperation. So what is so interesting about Amprius, such that it spurred some people to consider a potential Tesla partnership? Amprius' research and development is squarely focused on the silicon nanowire anode (what is possibly shown as the background of the announcement).
The main limiting factor of Lithium Ion (Li-ion) batteries is the amount of lithium that can be held in the battery’s electrodes. In conventional batteries, the negative electrode or anode is made of carbon in the form of graphite. Silicon has about 10 times the storage capacity as graphite, but it has a major drawback. Silicon swells dramatically when it is charged. There have been many attempts to use silicon in batteries, but this expansion causes the silicon to fracture and the battery fails.
In 2007, researchers at Stanford University discovered a solution to the problem associated with silicon in batteries. Using new techniques in nanotechnology, they were able to store lithium in tiny silicon nanowires.
Cross Sectional Image of Amprius Technologies' Silicon Nanowire Anode using a Scanning Electron Microscope
Amprius Technologies' 100% silicon nanowire batteries are a breakthrough technology that is revolutionizing the battery industry. With the highest energy density in the world, Amprius' battery tech can improve the performance of electric vehicles, aircraft, drones, and just about anything that uses a rechargeable battery. And if Tesla is really working with the company, then Battery Day should reveal even more exciting, unexpected details.
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