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With the launch of wearable devices and smartphones that require high capacity of electricity such as foldable phones and 5G phones, the interest in batteries are increasing and various battery types are developed. For example, flexible batteries embedded in the mobile watch band or wireless power sharing batteries that have developed from wireless charging. However, there is no manufacturing of a battery that produces a battery with thousands milliamp Hour (mAh) capacity to be foldable. Recently, a research team from Korea developed a monolithic electrode that can replace heavy copper collectors and enabled development of a flexible battery with high capacity.

Professor Soojin Park of Chemistry and Division of Advanced Materials Science with his postdoctoral researcher, Jaegeon Ryu and his PhD student, Jieun Kang successfully developed a flexible battery with thin and three-dimensional organic electrode in collaboration with Korea Institute of Materials Science.

Furthermore, they were able to lower the weight of a battery by 10 times more than the conventional copper collector1) by using a three-dimensional copper collector. Instead of using a graphite anode, they utilized organic materials and were able to increase the energy density of a battery by four times and more. Their research establishment was published in the recent issue of ACS Nano.

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