Our research team has developed an all-solid secondary battery that works stably even when crumpled or cut. The Korea Basic Science Institute (KBSI) announced on the 13th that Haejin Kim (photo), a research team in the material analysis research department, developed an all-solid secondary battery that can be safely and freely transformed with the Korea Research Institute of Chemical Technology, Sungkyunkwan University, Inha University, and Chonnam University research teams. The research team uses a complex electrode technology that can smoothly move lithium ions to the inside of the electrode, a cell assembly technology that minimizes interfacial resistance, and a full-cell technology that can realize a large capacity by stacking cells with a large area to make it thin to a thickness of 1 mm or less. Even if the fabricated battery was crumpled or cut, it was confirmed that it worked normally. The 1000㎃h capacity battery developed by the research team to confirm the performance was found to maintain 90% performance even after 5000 times of charging/discharging and 1000 times of bending test. The research team is planning to promote the commercialization of the all-solid secondary battery utilizing the characteristics of free deformation by diagnosing that the all-solid secondary battery will replace the lithium-ion secondary battery within the next 10 years. Dr. Kim said, “We have secured the next-generation free-transformation all-solid secondary battery manufacturing technology with guaranteed safety. It can be applied to both medium and large secondary batteries used in wearable electronic devices, drones, and electric vehicles, thus playing a role as a game changer in the future secondary battery industry. I will do it.” Reporter Kim Gun-ho
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