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|  --  \\  | \_/ ||   | [] || |  ___  ||| .  . || 
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`------`    `---`       -|_|| `-`   `-` `-`  `-`  
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Text this: Hydrothermal synthesis of MnO 2/CNT nanocomposite with a CNT core/porous MnO 2 sheath hierarchy architecture for supercapacitors