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Nanofibers modified through carbon and nitrogen co‐doping and phase transformation for application in pseudocapacitors
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-09-14 , DOI: 10.1002/er.5929 Fariba Sabaghian 1 , Mohammad Mazloum‐Ardakani 1 , Mozhgan Yavari 2 , Fereshteh Vajhadin 1
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-09-14 , DOI: 10.1002/er.5929 Fariba Sabaghian 1 , Mohammad Mazloum‐Ardakani 1 , Mozhgan Yavari 2 , Fereshteh Vajhadin 1
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Nitrogen and carbon‐codoped titanium dioxide nanofibers (N,C‐TiNF) were prepared through a feasible and cost‐beneficial electrospinning procedure and introduced as active materials for electrodes in supercapacitors. The influence of nanofibers modification by nitrogen doping was demonstrated on the performance of supercapacitors. In addition, it was shown that the carbon originating from the fiber precursor could be doped on TiNF with no need for a carbon doping agent. The C‐doped TiNF (C,TiNF) was also compared with the N,C‐TiNF to explore the change in the behavior of supercapacitors. The specific capacitance of the prepared N,C‐TiNF electrode (102 F g−1) was found to be four times more than that of the C‐TiNF electrode (25 F g−1) in an Na2SO4 2 M solution. With nitrogen doping on the surface of the C,TiNF, the lattice anatase phase changed to rutile, and the distance between the (O‐2p) valence and conduction bands (Ti‐3d) reduced. As a result, the pseudocapacitance properties were enhanced. It is generally concluded that N, C‐TiNFs are excellent candidates to be applied in supercapacitors.
中文翻译：
通过碳氮共掺杂和相变改性的纳米纤维，可用于伪电容器
氮和碳共混的二氧化钛纳米纤维（N，C-TiNF）是通过一种可行且成本有利的静电纺丝工艺制备的，并作为超级电容器中的电极活性材料引入。氮掺杂改性纳米纤维对超级电容器性能的影响得到了证明。另外，已经表明，可以将源自纤维前体的碳掺杂在TiNF上，而不需要碳掺杂剂。还将掺C的TiNF（C，TiNF）与N，C-TiNF进行了比较，以探索超级电容器行为的变化。发现在Na 2 SO 4中制备的N，C-TiNF电极（102 F g -1）的比电容是C-TiNF电极（25 F g -1）的四倍。2 M解决方案。通过在C，TiNF表面掺杂氮，晶格锐钛矿相变为金红石相，（O-2p）价键与导带（Ti-3d）之间的距离减小。结果，增强了伪电容特性。通常得出的结论是，N，C-TiNFs是用于超级电容器的优秀候选者。
更新日期：2020-09-14
中文翻译：
通过碳氮共掺杂和相变改性的纳米纤维，可用于伪电容器
氮和碳共混的二氧化钛纳米纤维（N，C-TiNF）是通过一种可行且成本有利的静电纺丝工艺制备的，并作为超级电容器中的电极活性材料引入。氮掺杂改性纳米纤维对超级电容器性能的影响得到了证明。另外，已经表明，可以将源自纤维前体的碳掺杂在TiNF上，而不需要碳掺杂剂。还将掺C的TiNF（C，TiNF）与N，C-TiNF进行了比较，以探索超级电容器行为的变化。发现在Na 2 SO 4中制备的N，C-TiNF电极（102 F g -1）的比电容是C-TiNF电极（25 F g -1）的四倍。2 M解决方案。通过在C，TiNF表面掺杂氮，晶格锐钛矿相变为金红石相，（O-2p）价键与导带（Ti-3d）之间的距离减小。结果，增强了伪电容特性。通常得出的结论是，N，C-TiNFs是用于超级电容器的优秀候选者。
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