Transparent and Multi-Foldable Nanocellulose Paper Microsupercapacitors
발표자
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초록
내용
Despite the ever-increasing demand for transparent power sources in wireless optoelectronics, most of them have still relied on synthetic chemicals, thus limiting their versatile applications. Here, we demonstrate a class of transparent nanocellulose paper microsupercapacitors (TNP-MSCs) as a beyond-synthetic-material strategy. Onto semi-interpenetrating polymer network-structured, thiol-modified TNP, a thin layer of silver nanowire and a conducting polymer are consecutively introduced through microscale-patterned masks to produce a transparent conductive electrode (TCE) with planar interdigitated structure. This TNP-TCE, in combination with solid-state gel electrolytes, enables on-demand (in-series/in-parallel) cell configurations in a single body of TNP-MSC. Driven by this structural uniqueness and scalable microfabrication, the TNP-MSC exhibits improvements in optical transparency (T = 85%), areal capacitance (0.24 mF cm-2), controllable voltage (7.2 V/cell), and mechanical flexibility, which exceed those of previously reported transparent MSCs based on synthetic chemicals.