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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Fast oxygen, nitrogen co-functionalization on electrospun lignin-based carbon nanofibers membrane via air plasma for energy storage application
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Fast oxygen, nitrogen co-functionalization on electrospun lignin-based carbon nanofibers membrane via air plasma for energy storage application

机译：快速氧，通过空气等离子体储能施加施用电梭基碳纳米纤维膜的快速氧气，氮官能化

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摘要

The conventional method of thermal post-modification for introducing heteroatom into carbon nanofiber (CNF) generally suffered from some drawbacks in high-cost preparation and requirement of extra chemical agents. Herein, a more cost-efficient method based on air plasma was applied to introduce oxygen/nitrogen into lignin-based carbon nanofiber (LCNF). Massive free radicals (N, O+ 2, O+,O- 2,O-) generating from air plasma contributed to a high content of oxygen (15.24 wt%) and nitrogen (11.48 wt%) within the plasma-modified LCNF (P-LCNF). Furthermore, air plasma also resulted in rough surface of the P-LCNF. Benefiting from the synergistic effect of oxygen/nitrogen co-doped and rough surface, the water contact angle of the P-LCNF was reduced by 64%. In a 6.0 mol/L KOH electrolyte, the P-LCNF electrode exhibited excellent specific capacitance (344.6 F/g at 1.0 A/g), good rate capability (68.5% capacitance retention), low internal resistance (0.34 Omega), as well as high capacitance retention of 102.4% after 2000 cycles. (C) 2019 Elsevier B.V. All rights reserved.
机译：将杂原子引入碳纳米纤维（CNF）中的常规热后改性方法通常遭受一些高成本制备和额外化学试剂的要求的一些缺点。在此，施加基于空气等离子体的更成本效率的方法以将氧/氮引入木质素基碳纳米纤维（LCNF）。从空气等离子体产生巨大的自由基（N，O + 2，O +，O-2，O-）导致血浆改性LCNF（P-）内的氧气（15.24wt％）和氮气（11.48wt％）的高含量（p- LCNF）。此外，空气等离子体也导致P-LCNF的粗糙表面。从氧/氮的协同效果受益于氧气/氮掺杂和粗糙表面，P-LCNF的水接触角减少了64％。在6.0mol / L KOH电解质中，P-LCNF电极优异的特定电容（344.6 f / g为1.0 a / g），良好的速率能力（电容保留68.5％），低内阻（0.34ω），也是如此在2000年循环后，高电容保留102.4％。 （c）2019 Elsevier B.v.保留所有权利。

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