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Utilizing renewable and abundant biomass waste to prepare hierarchically porous carbons (HPC) materials with large surface area and good electrical conductivity have received considerable attention recently. In this work, a novel 3D HPC was prepared by a low-cost and facile hydrothermal process, carbonization, and chemical activation from Huiyuan® fruit grain orange (FGO) with expired deadline for...
A hierarchical porous carbon material as the conductive matrix in the sulfur cathode for rechargeable lithium batteries is prepared by an in situ two-step activation method using sucrose as the carbon source, CaCO3 as the template, and (CH3COO)2Cu·H2O (Cu(Ac)2) as the additive. The microstructure and morphology of the activated porous sulfur–carbon composite is characterized by means of X-ray diffraction,...
MnO2/carbon nanocomposites with hierarchical pore structure and controllable MnO2 loading have been synthesized using a self-limiting growth method. This was achieved by the redox reactions of KMnO4 with sacrificed carbon substrates that contain hierarchical pores. The unique pore structure allows the synthesis of nanocomposites with tunable MnO2 loading up to 83 wt.%. The specific capacitance of...
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