3D porous carbonaceous materials were prepared by combining pre-carbonization and KOH activation with sakura petals as raw materials. The prepared porous sakura carbon (SAC-4) exhibits a high specific surface area, a suitable pore size distribution, a low proportion of oxygen-rich groups and N functional groups, and a partially graphitized phase, which are very beneficial for the electrochemical performance of the material as a supercapacitor electrode. In the activation step, when the mass ratio of KOH to sakura carbon (SC) is 4, a supercapacitor is prepared. A maximal specific capacitance of 265.8 F g ~(?1) is obtained when the current density is 0.2 A g ~(?1) . When the current density is 1 A g ~(?1) , after 2000 cycles in succession, the capacitance retention rate is excellent and the cycling stability can reach as high as 90.2%. The obtained results indicate that porous carbon prepared with sakura blossom as the raw material is an effective and environmentally friendly electrode material for energy storage.
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机译：通过将预碳化和KOH活化与樱花花瓣相结合来制备3D多孔碳质材料。制备的多孔樱花碳（SAC-4）具有较高的比表面积，合适的孔径分布，低比例的富氧基团和N官能团以及部分石墨化的相，这对电化学性能非常有利该材料用作超级电容器电极。在活化步骤中，当KOH与樱花碳（SC）的质量比为4时，制备超级电容器。当电流密度为0.2 A g〜（Δ1）时，可获得最大265.8 F g〜（Δ1）的比电容。当电流密度为1 A g〜（？1）时，连续进行2000次循环后，电容保持率极好，循环稳定性可高达90.2％。所得结果表明，以樱花开花为原料制备的多孔碳是一种有效且环保的储能电极材料。
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