The pitch-based activated carbons were prepared with KOH/KMnO₄ as a multiple function activation agent to increase the specific capacitance of a supercapacitor electrode active material. And the porous structure and electrochemical properties of activated carbon were analyzed on varying amounts of KMnO₄. KMnO₄ was decomposed into K₂O, MnO, and O₂ at the activation temperature of KOH, and MnO was introduced to activated carbon. K₂O/O₂ reacts with a surrounding pitch to generate micropores and forms a pathway that exposes MnO to the outside. It also affects to the specific surface area of activated carbon like KOH chemical activation. The enhanced specific surface area and introduced MnO in activated carbon led to a 28.9% increase in specific capacitance.

中文翻译：

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超级电容器用KOH / KMnO 4试剂改善了沥青基活性炭的比电容

使用KOH / KMnO ₄作为多功能活化剂制备基于沥青的活性炭，以增加超级电容器电极活性材料的比电容。在不同数量的KMnO ₄上分析了活性炭的多孔结构和电化学性能。在KOH的活化温度下，KMnO ₄分解为K ₂ O，MnO和O ₂，并且将MnO引入活性炭中。K ₂ O / O ₂与周围的沥青反应生成微孔并形成将MnO暴露于外部的途径。它还会影响活性炭的比表面积，例如KOH化学活化。比表面积的增加和活性炭中MnO的引入导致比电容增加28.9％。