Dual heteroatom doping of graphene is currently presumed as more promising for energy storage applications. In addition, the development of energy density with multiple redox additives is paying special attention. Here, we report the fabrication of B, P dual‐doped graphene in three various weight combinations. The formation and the quantity of the prepared samples were investigated by XRD, FT‐IR, EDAX and XPS. The B, P dual doped graphene derived from the weight ratio of boron and phosphorus dopant in 1:3 has achieved an enriched gravimetric capacitance of 360 F g‐1 at 1 A g‐1 (1 M H2SO4) and greater than RGO (151 F g‐1). The energy density of the fabricated symmetric supercapacitor cell is found to be 50 Wh kg‐1 in triple redox additives in 1 M H2SO4 solution which is greater than KI (33 Wh Kg‐1) and 1 M H2SO4 alone (5 Wh Kg‐1) at 2 A g‐1. Also, the same cell delivered an increased stability of 99.7% of capacitance retained from its initial value after 7000 charge‐discharge cycles at 5 A g‐1.

中文翻译：

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揭示三重氧化还原添加剂中 B、P 双掺杂石墨烯的超级电容性能

目前认为石墨烯的双杂原子掺杂对于储能应用更有前景。此外，多种氧化还原添加剂的能量密度开发也受到特别关注。在这里，我们报告了三种不同重量组合的 B、P 双掺杂石墨烯的制造。通过 XRD、FT-IR、EDAX 和 XPS 对制备的样品的形成和数量进行了研究。由硼和磷掺杂剂重量比为 1:3 得到的 B、P 双掺杂石墨烯在 1 A g-1 (1 M H2SO4) 下实现了 360 F g-1 的富集重力电容，并且大于 RGO (151 Fg-1）。在 1 M H2SO4 溶液中，使用三重氧化还原添加剂，所制造的对称超级电容器电池的能量密度为 50 Wh kg-1，大于 KI (33 Wh Kg-1) 和单独的 1 M H2SO4 (5 Wh Kg-1) ）在 2 A g-1 时。此外，同一电池在 5 A g-1 下进行 7000 次充放电循环后，其电容稳定性比初始值保留了 99.7%。