The commercialization aspect in electric double layer capacitors is highly dependent on source of carbon, its purity, and the specific capacitance with unique deliverable for proficient charge storage. Here, we report synthesis of interconnected mesoporous spherical carbon by direct flame synthesis using candle wax for symmetric supercapacitors with the non-aqueous approach. The heat treated candle soot (CST) at 450 °C results in a high purity carbon with the improved surface area of 608 m² g⁻¹ also the majority of pores in the range of 1–10 nm, which is ideal for charge storage in supercapacitors. The highest capacitance of 64 and 88.2 F g⁻¹ at 0.1 A g⁻¹ was obtained for 1 M TEABF₄ in acetonitrile and EMIM BF₄, respectively. A stability up to 82–85% can be achieved for 5,000 charge-discharge cycles. CST as a potent electrode material successfully delivered highest specific energy of 14 and 28 Wh kg⁻¹ and specific power of 12.5 and 15 kW kg⁻¹ in 1 M TEABF₄ in ACN and EMIM BF₄ electrolytes, respectively.

双电层电容器的商业化方面高度依赖于碳的来源，其纯度和比电容以及独特的可交付性，以进行有效的电荷存储。在这里，我们报告了通过使用非水方法的对称超级电容器的烛光蜡直接火焰合成方法，来合成互连的介孔球形碳。450°C的热处理烟灰（CST）可产生高纯度碳，表面积提高到608 m ²  g ^-1，大多数孔在1–10 nm范围内，这是电荷存储的理想选择在超级电容器中。对于1 M TEABF _4，在0.1 A g ^-1下获得了64和88.2 F g ^-1的最高电容分别在乙腈和EMIM BF _4中使用。5,000次充放电循环可达到82-85％的稳定性。作为有效的电极材料，CST在ACN和EMIM BF ₄电解质中的1 M TEABF ₄中分别成功地实现了14和28 Wh kg ^-1的最高比能以及12.5和15 kW kg ^-1的最高比功率。