Facile synthesis of porous biocarbon decorated with MnO-CeO2 nanocrystals for high-capacitance electrodes

Abstract The increasing demand for power storage device with high energy density forces the scientists to design new materials as electrodes. In this work, hollyhock stalks were converted into porous carbon host for growth of MnO and CeO2 nanocrystals hydrothermally. The obtained biocarbon with macro-meso-micro porous structure provides excellent electron transport properties, while the nano-size MnO-CeO2 (