A former Nissan employee developed a [Li] -all-poly battery. "Up to 90 percent cheaper than Li-ion"

Hideaki Hori, founder of APB Corp., claims to have developed fully lithium polymer batteries (hence the company name) that can be 90 percent cheaper to manufacture than classic liquid-electrolyte lithium-ion cells. The Japanese want to make cells "like steel", not "like [complex] electronic devices."

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In a statement to Reuters, Hori emphasizes that any modern lithium-ion cell requires laboratory cleanliness, air filtration, humidity control, and contamination of highly reactive cell components. This is why new battery factories are so expensive, costing billions of dollars to launch.

APB replaced metal electrodes and liquid electrolytes with a polymer (resin) embedded structure. The whole structure has a bipolar structure, that is, classical electrodes are integrated into the cell body, and there will be a polymer layer between them. In fact, this is a type of Li-poly, which the creator calls all-poly.

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Hori claims he can produce cells up to 10 meters long and stack them on top of each other to increase their capacity (source). Rather, the scientist knows what he is talking about: together with Sanyo Chemical Industries in 2012, he produced lithium polymer systems with a conductive polymer gel.

Layered structure of [Li] -all-poly cells according to APB (c) APB

Unlike lithium-ion cells, [Li] -all-poly cells will not be prone to catching fire after being punctured. The charged lithium-ion cell at the point of damage can heat up to 700 degrees Celsius, while the bipolar structure of the APB cells will spread the energy released over a larger surface. An additional advantage is the absence of a liquid and flammable electrolyte.

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Minuses? Are. Charge transfer in a polymer is more difficult than in a liquid electrolyte; therefore, fully polymer cells can have a lower capacity. In addition, their bipolar structure forces them to be connected in series (one after the other), which makes it difficult to monitor the status of individual cells. For this reason, Hideaki Horie wants to offer its product for stationary applications such as energy storage.

The company has already raised 8 billion yen (equivalent to 295 million zlotys) and plans to start production of all polyelements at the end of this year. APB wants to produce 2023 GWh of cells per year by 1.

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