Electrostatic capacitors enable ultrafast charging and discharging, providing energy storage and power for smartphones, laptops, medical devices, and car electronics. But the ferroelectric materials used in these capacitors have significant energy loss, making it difficult to provide high energy storage capability. Now, researchers at Washington University in St. Louis; the Massachusetts Institute of Technology; Yonsei University in Seoul, South Korea; Sungkyunkwan University in Suwon, South Korea; Ulsan National Institute of Science and Technology in South Korea; and the Korea Institute of Science and Technology in Seoul have developed novel 2D/3D/2D heterostructures that can minimize energy loss while preserving the advantageous material properties of ferroelectric 3D materials. Their approach sandwiches 2D and 3D materials in atomically thin layers with carefully engineered chemical and nonchemical bonds between each layer.
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