State Key Laboratory of Materials-oriented Chemical Engineering & School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.
New Energy and Materials Laboratory (NEML), Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Sci Rep. 2019 Apr 1;9(1):5431. doi: 10.1038/s41598-019-41769-y.
Synthesizing high-performance electrode materials plays a vital role in fabricating advanced supercapacitors. Heteroatom doping has been proved to be effective in enhancing the electrochemical properties of carbon-based electrodes. Herein, we report an O, P co-doped porous carbon (PC) originated from waste biomaterials, cicada sloughs. The PC possesses meso-/microporous structure with a large specific surface area (1945 m·g) and a high O, P co-doping ratio of 18 wt.%. These superior factors together enable it to deliver high specific capacitance (295 F·g in 6 M KOH and 291 F·g in 1 M HSO), good cycling stability (100% capacitance retention after 10000 cycles in 1 M HSO) and rate performance. Therefore, from the respects of environment friendliness and cost effectivity, obtaining heteroatom doped carbons from the nature might be better compared to pyrolyzing heteroatom-containing chemicals.
合成高性能电极材料在制备先进超级电容器中起着至关重要的作用。杂原子掺杂已被证明可以有效提高基于碳的电极的电化学性能。本文报道了一种由废生物质蝉蜕衍生而来的 O、P 共掺杂多孔碳（PC）。PC 具有介孔/微孔结构，比表面积高达 1945m·g，O、P 共掺杂比例高达 18wt%。这些优越的特性使其具有高比电容（在 6M KOH 中为 295F·g，在 1M HSO 中为 291F·g）、良好的循环稳定性（在 1M HSO 中 10000 次循环后电容保持率为 100%）和倍率性能。因此，从环保和成本效益的角度来看，从自然界中获取杂原子掺杂碳可能比热解含杂原子的化学品更好。
