A low cost synthesis of catalyst free carbon nano‐onions (CNOs) and nitrogen post doped CNOs (N−CNOs) using grapeseed oil is reported. Successful incorporation of nitrogen atoms into the lattice of CNOs was confirmed by XPS, resulting in 1.7 % nitrogen content. BET and Raman analysis showed an increase in the specific surface area and the I_D/I_G ratio of carbon, respectively after N incorporation. The specific capacitance of the CNOs increased upon nitrogen doping and as a result, N−CNOs exhibited superior electrochemical performance compared to pristine CNOs. Our results demonstrate that N−CNOs are a promising electrode material for energy storage in supercapacitors.

中文翻译：

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葡萄籽油中火焰热解生长的氮掺杂碳纳米离子的理化性质，用于超级电容器

据报道，使用葡萄籽油可低成本合成无催化剂的碳纳米离子（CNO）和氮掺杂的CNO（N-CNO）。XPS证实了氮原子成功掺入CNOs的晶格中，氮含量为1.7％。BET和拉曼分析表明，掺氮后碳的比表面积和I _D / I _G比分别增加。氮掺杂后，CNO的比电容增加，因此，N-CNO的电化学性能优于原始CNO。我们的结果表明，N-CNOs是用于超级电容器中能量存储的有前途的电极材料。