Horie’s innovation is to replace the battery’s basic components -- metal-lined electrodes and liquid electrolytes -- with a resin construction. He says this approach dramatically simplifies and speeds up manufacturing, making it as easy as “buttering toast.” It allows for 10-meter-long battery sheets that can be stacked on top of each other “like seat cushions” to increase capacity, he said. Importantly, the resin-based batteries are also resistant to catching fire when punctured.
But the technology is not without its shortcomings. Polymers are not as conductive as metal and this could significantly impact the battery’s carrying capacity, according to Menahem Anderman, president of California-based Total Battery Consulting Inc. One drawback of the bipolar design is that cells are connected back-to-back in a series, making control of individual ones difficult, Anderman said. He also questioned whether the cost savings will be sufficient to compete with the incumbents.
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