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Hierarchically porous MnO2/rice husks derived carbon (MnO2/RHC) composite with excellent electrochemical properties has been prepared as active material for supercapacitors. In this study, a two-step process was utilized for constructing this composite, involving carbonization–activation of rice husks to obtain RHC and in situ chemical precipitation to incorporate MnO2. Ultimately, MnO2 was uniformly...
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