How to Make Any Battery a 3D Battery

Image courtesay of addionics

The world runs on batteries. They’re in our devices, in our homes, in our cars, and in our hearts (quite literally, for some). Batteries, and the electrification they enable, may be the technology that will save our planet from irreversible warming.

But for that to happen, batteries have to get better. Much better. Thankfully, there’s no shortage of researchers trying to do just that. Solid electrolytes and higher energy electrodes are just some of the active areas of research. But we can go deeper than improving the materials that make up batteries—we can improve the physical design of batteries themselves. The world runs on batteries. They’re in our devices, in our homes, in our cars, and in our hearts (quite literally, for some). Batteries, and the electrification they enable, may be the technology that will save our planet from irreversible warming.

But for that to happen, batteries have to get better. Much better. Thankfully, there’s no shortage of researchers trying to do just that. Solid electrolytes and higher energy electrodes are just some of the active areas of research. But we can go deeper than improving the materials that make up batteries—we can improve the physical design of batteries themselves.

“While most companies try to improve batteries by focusing on the chemistry, we focus on the physics,” boasts battery startup Addionics, founded in 2018 and based in Israel and the U.K. Addionics is working to commercialize its version of 3D batteries, a promising field of battery research that hasn’t proven practical to manufacture at scale—until now, according to Addionics.

“We came up with a process to manufacture 3D structures with precision and cost-effectiveness that, to the best of our knowledge, no one else in the world can do,” explained Addionics co-founder and CEO Moshiel Biton.What Are 3D Batteries?

There are many different chemistries of lithium-ion batteries—the most popular type of battery today—but they all share one thing in common: they’re flat. A Li-ion cell is composed of layers stacked together like a polarized sandwich. On either end is a current collector, typically aluminum foil on the positive end and copper foil on the negative end. Next in line are the electrodes, the positive cathode and negative anode. In the very middle of the sandwich is a separator soaking in a liquid electrolyte. (The sandwich can be rolled in on itself, as seen in automaker Tesla’s cylindrical cells, but it remains effectively a two-dimensional structure.)

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