碳纳米管材料作为一种先进碳材料,具有十分良好的导电性,但是其比表面积和比容量比较低。氮掺杂的碳材料用于超级电容器的容量高、比表面积较大,但是其导电性较差。因此,考虑将二者相结合,将氮碳掺杂的碳材料分别负载在碳纳米管的内部与外部,研究其对超级电容器储能性能的影响。结果表明,碳纳米管外负载氮掺杂的碳材料表现出较好的电化学活性,包括高的容量和优异的循环性能。
As one type of advanced carbon material,carbon nanotubes (CNTs) owns very good electrical conductivity,but its specific surface area is relatively low,leading to a poor supercapacitive performance.While,as electrode for supercapacitor,nitrogen-doped carbon material has a large surface area and exhibits a high capacity but suffers from poor conductivity.Hererin,a composite carbon materials combined these two carbon-based materials was fabricated,in which the nitrogen-carbon doped carbon material were respectively supported inside and outside CNTs.The electrochemical properties of the derived two carbons were systematically studied.The results shown that the nitrogen-doped carbon supported outside CNTs exhibited good electrochemical activity including high capacitance and superior cycling stability.
[1] Chen D P,Hu X L,Huang Y Z,et al.Facile fabrication of nanoporous BCN with excellent charge/discharge cycle stability for high-performance supercapacitors[J].Materials Letters,2019,246:28-31.
[2] Ojha M,Deepa M.Molybdenum selenide nanotubes decorated carbon net for a high performance supercapacitor[J].Chemical Engineering Journal,2019,368:772-783.
[3] Cheng Y,Zhai M M,Hu J B.The fabrication of NiCu2S2 from NiCu film on nickel foam for methanol electrooxidation and supercapacitors[J].Applied Surface Science,2019,480:505-513.
[4] Tang N,Wang W,You H H,et al.Morphology tuning of porous CoOnanowall towards enhanced electrochemical performance as supercapacitors electrodes[J].Catalysis Today,2019,330:240-245.
[5] Zhao N,Zhang P X,Luo D W,et al.Direct production of porous carbon nanosheets/particle composites from wasted litchi shell for supercapacitors[J].Journal of Alloys and Compounds,2019,788:677-684.
[6] Thirukumaran P,Atchudan R,Shakila Parveen A,et al.Polybenzoxazine originated N-doped mesoporous carbon ropes as an electrode material for high-performance supercapacitors[J].Journal of Alloys and Compounds,2018,750(20):384-391.
[7] Guo D,Han S,Ma R,et al.In situ formation of iron-cobalt sulfides embedded in N,S-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction[J].Microporous and Mesoporous Materials,2018,270(16):1-9.
[8] Tan A D,Wan K,Wang Y F,et al.S-containing MOF-derived dual-doped mesoporous carbon as a highly effective oxygen reduction reaction electrocatalyst[J].Catalysis Science & Technology,2018,8(1):335-343.
[9] Tang D,Li K,Zhang W,et al.Nitrogen-doped mesoporous carbon-armored cobalt nanoparticles as efficient hydrogen evolving electrocatalysts[J].Journal of Colloid and Interface Science,2018,514(6):281-288.
[10] Wan K,Long G F,Liu M Y,et al.Nitrogen-doped ordered mesoporous carbon:synthesis and active sites for electrocatalysis of oxygen reduction reaction[J].Applied Catalysis B:Environmental,2015,165(4):566-571.
[11] Chen M,Xuan H,Zheng X,et al.N-doped mesoporous carbon by a hard-template strategy associated with chemical activation and its enhanced supercapacitance performance[J].Electrochimica Acta,2017,238(16):269-277.
[12] 孙立,宋伟明,阮曦金,等.氮掺杂多孔晶态碳的合成及其电容特性的应用[J].人工晶体学报,2016,45(3):11-13.
[13] Han J,Xu G,Ding B,et al.Porous nitrogen-doped hollow carbon spheres derived from polyaniline for high performance supercapacitors[J].Journal of Materials Chemistry A,2014,2(14):167-169.
[14] 刘力源,郭瑞,张晓婷,等.氮掺杂多壁碳纳米管的制备及其电化学性能[J].电源技术2018,42(5):662-664.
[15] 李莉香,陶晶,耿新,等.聚苯胺改性氮掺杂碳纳米管制备及其超级电容器性能[J].物理化学学报,2013,29(1):111-116.
基金资助
江苏省第五期“333工程”科研资助项目(BRA2016306)
PDF
(2849KB)
