Abstract
In this work, we demonstrate a cooperative strategy of surface modification of carbon materials by N/P co-do** and redox additive of Fe2+ ion for boosting the performance of supercapacitors. Using NH4HCO3 or NH4H2PO4 as N/P dopants, the modified carbon materials have increased concerning the electrical conductivity, porosity, and N/P contents. Furthermore, Fe2+ ion serving as redox additive has been incorporated. In a three-electrode configuration, the C-N-P-Fe sample exhibits capacitance of 371 F g−1, which is 2.38 times larger than the C-Blank-Fe sample; the redox process of Fe2+ ions is controlled by the diffusion. In a two-electrode configuration, the C-N-P-Fe sample delivers energy density of 7.7 Wh kg−1, almost 2.33 times higher than the C-Blank-Fe sample. Moreover, it unveils that the pseudo-capacitance contribution has been improved with increasing N/P do** by Trasatti method; the redox process of Fe2+ ions predominantly happens on negative electrode.
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References
Simon P, Gogotsi Y (2008) Materials for electrochemical capacitors. Nat Mater 7:845–854
Zhai Y, Dou Y, Zhao D, Fulvio PF, Mayes RT, Dai S (2011) Carbon materials for chemical capacitive energy storage. Adv Mater 23:4828–4850
Zhang LL, Zhao XS (2009) Carbon-based materials as supercapacitor electrodes. Chem Soc Rev 38:2520–2531
Paraknowitsch JP, Thomas A (2013) Do** carbons beyond nitrogen: an overview of advanced heteroatom doped carbons with boron, sulphur and phosphorus for energy applications. Energy Environ Sci 6:2839–2855
Yang M, Zhou Z (2017) Recent breakthroughs in supercapacitors boosted by nitrogen-rich porous carbon materials. Adv Sci:1600408
Zhong M, Liu H, Wang M, Zhu YW, Chen XY, Zhang ZJ (2019) Hierarchically N/O-enriched nanoporous carbon for supercapacitor application: simply adjusting the composition of deep eutectic solvent as well as the ratio with phenol-formaldehyde resin. J Power Sources 438:226982
Shen W, Fan W (2013) Nitrogen-containing porous carbons: synthesis and application. J Mater Chem A 1:999–1013
Lin Q, Zhang J, Lv W, Ma J, He Y, Kang F, Yang Q (2019) A functionalized carbon surface for high-performance sodium-ion storage semall 1902603
Kale VS, Hwang M, Chang H, Kang J, Chae S, Jeon Y, Yang J, Kim J, Ko Y, Piao Y, Hyeon T (2018) Microporosity-controlled synthesis of heteroatom codoped carbon nanocages by wrap-bake-sublime approach for flexible all-solid-state-supercapacitors. Adv Funct Mater:1803786
** H, Feng X, Li J, Li M, **a Y, Yuan Y, Yang C, Dai B, Lin Z, Wang J, Lu J, Wang S (2019) Heteroatom-doped porous carbon materials with unprecedented high volumetric capacitive performance. Angew Chem Int Ed 58:1–6
Nazarian-Samani M, Haghighat-Shishavan S, Nazarian-Samani M, Kim M, Cho B, Oh S, Kashani-Bozorg S, Kim K (2017) Rational hybrid modulation of P, N dual-doped holey graphene for high performance supercapacitors. J Power Sources 372:286–296
Akinwolemiwa B, Peng C, Chen Z (2015) Redox electrolytes in supercapacitors. J Electrochem Soc 162:A5054–A5059
Béguin F, Presser V, Balducci A, Frackowiak E (2014) Carbons and electrolytes for advanced supercapacitors. Adv Mater 26:2219–2251
Senthilkumar ST, Kalai Selvan R, Melob JS (2013) Redox additive/active electrolytes: a novel approach to enhance the performance of supercapacitors. J Mater Chem A 1:12386–12394
Lee J, Srimuk P, Fleischmann S, Su X, Hatton T, Presser V (2019) Redox-electrolytes for non-flow electrochemical energy storage: a critical review and best practice. Prog Mater Sci 101:46–89
Mai L, Minhas-Khan A, Tian X, Hercule K, Zhao Y, Lin X, Xu X (2013) Synergistic interaction between redox-active electrolyte and binder-free functionalized carbon for ultrahigh supercapacitor performance. Nat Commun 4:2923
Jayaramulu K, Dubal DP, Nagar B, Ranc V, Tomanec O, Petr M, Datta KKR, Zboril R, Gómez-Romero P, Fischer RA (2018) Ultrathin hierarchical porous carbon nanosheets for high-performance supercapacitors and redox electrolyte energy storage. Adv Mater:1705789
Nie Y, Wang Q, Chen XY, Zhang ZJ (2016) Nitrogen and oxygen functionalized hollow carbon materials: the capacitive enhancement by simply incorporating novel redox additives into H2SO4 electrolyte. J Power Sources 320:140–152
Wang C, Zhou Y, Sun L, Wan P, Zhang X, Qiu J (2013) Sustainable synthesis of phosphorus- and nitrogen-co-doped porous carbons with tunable surface properties for supercapacitors. J Power Sources 239:81–88
Ismagilov ZR, Shalagina AE, Podyacheva OY, Ischenko AV, Kibis LS, Boronin AI, Chesalov YA, Kochubey DI, Romanenko AI, Anikeeva OB, Buryakov TI, Tkachev EN (2009) Structure and electrical conductivity of nitrogen-doped carbon nanofibers. Carbon 47:1922–1929
Cruz-Silva E, Lopez-Urias F, Munoz-Sandoval E, Sumpter BG, Terrones H, Charlier J, Meunier V, Terrones M (2009) Electronic transport and mechanical properties of phosphorus- and phosphorus nitrogen-doped carbon nanotubes. ACS Nano 3:1913–1921
Jiang H, Lee P, Li C (2013) 3D carbon based nanostructures for advanced supercapacitors. Energy Environ Sci 6:41–53
Qiu Z, Wang Y, Bi X, Zhou T, Zhou J, Zhao J, Miao Z, Yi W, Fu P, Zhuo S (2018) Biochar-based carbons with hierarchical micro-meso-macro porosity for high rate and long cycle life supercapacitors. J Power Sources 376:82–90
Hu W, Sun X, Xu D, **ao Z, Chen X (2017) Microporous carbon materials by hydrogen treatment: the balance of porosity and graphitization upon the capacitive performance. Ind Eng Chem Res 56:7253–7259
Ma W, ** on surface chemistry and capacitive behaviors of porous carbon electrode. Electrochim Acta 266:420–430
Chen XY, Chen C, Zhang Z, **e D, Deng X, Liu J (2013) Nitrogen-doped porous carbon for supercapacitor with long-term electrochemical stability. J Power Sources 230:50–58
Wang H, Yang G, Chen Z, Liu J, Fan X, Liang P, Huang Y, Lin J, Shen Z (2019) Nitrogen configuration dependent holey active sites toward enhanced K+ storage in graphite foam. J Power Sources 419:82–90
Ferrari AC, Robertson J (2000) Interpretation of Raman spectra of disordered and amorphous carbon. Phys Rev 61:14095–14107
Sadezky A, Muckenhuber H, Grothe H, Niessner R, Pöschl U (2005) Raman microspectroscopy of soot and related carbonaceous materials: spectral analysis and structural information. Carbon 43:1731–1742
Chu P, Li L (2006) Characterization of amorphous and nanocrystalline carbon films. Mater Chem Phys 96:253–277
Okpalugo TIT, Papakonstantinou P, Murphy H, McLaughlin J, Brown NMD (2005) High resolution XPS characterization of chemical functionalized MWCNTs and SWCNTs. Carbon 43:153–161
Wang DW, Li F, Yin LC, Lu X, Chen ZG, Gentle IR, Lu GQ, Cheng HM (2012) Nitrogen-doped carbon monolith for alkaline supercapacitors and understanding nitrogen-induced redox transitions. Chem Eur J 18:5345–5351
Wu J, Zheng X, ** C, Tian J, Yang R (2015) Ternary do** of phosphorus, nitrogen, and sulfur into porous carbon for enhancing electrocatalytic oxygen reduction. Carbon 92:327–338
Ma X, Ning G, Qi C, Xu C, Gao J (2014) Phosphorus and nitrogen dual-doped few-layered porous graphene: a high-performance anode material for lithium-ion batteries. ACS Appl Mater Interfaces 6:14415–14422
Ren L, Zhang G, Yan Z, Kang L, Xu H, Shi F, Lei Z, Liu Z (2017) High capacitive property for supercapacitor using Fe3+/Fe2+ redox couple additive electrolyte. Electrochim Acta 231:705–712
Chun S, Evanko B, Wang X, Vonlanthen D, Ji X, Stucky G, Boettcher S (2015) Design of aqueous redox-enhanced electrochemical capacitors with high specific energies and slow self-discharge. Nat Commun 6:7818
Augustyn V, Simon P, Dunn B (2014) Pseudo-capacitive oxide materials for high-rate electrochemical energy storage. Energy Environ Sci 7:1597–1614
Sun X, Hu W, Xu D, Chen X, Cui P (2017) Integration of redox additive in H2SO4 solution and the adjustment of potential windows for improving the capacitive performances of supercapacitors. Ind Eng Chem Res 56:2433–2443
Stoller M, Park S, Zhu Y, An J, Ruoff R (2008) Graphene-based ultracapacitors. Nano Lett 8:3498–3502
Jiao C, Zhang Z, Chen X (2019) Nitrogen and fluorine dual-doped carbon nanosheets for high-performance supercapacitors. Nano 14:1950042
Zhang Z, Zheng Q, Sun L, Xu D, Chen X (2017) Two-dimensional carbon nanosheets for high-performance supercapacitors: large-scale synthesis and co-do** with nitrogen and phosphorus. Ind Eng Chem Res 56:12344–12353
Zhang Z, Zhu Y, Chen X, Cao Y (2015) Pronounced improvement of supercapacitor capacitance by using redox active electrolyte of p-phenylenediamine. Electrochim Acta 176:941–948
Zhang Z, Deng Z, Wang Q (2016) Illustrating the redox roles of amine and nitro groups linked to p-phenylenediamine and p-nitroaniline upon the improved capacitive performances. J Electroanal Chem 783:295–303
Tian Y, Liu M, Che R, Xue R, Huang L (2016) Cooperative redox-active additives of anthraquinone-2,7-disulphonate and K4Fe(CN)6 for enhanced performance of active carbon-based capacitors. J Power Sources 324:334–341
Wang Y, Shi Z, Huang Y, Ma Y, Wang C, Chen M, Chen Y (2009) Supercapacitor devices based on graphene materials. J Phys Chem C 113:13103–13107
Hasegawa G, Deguchi T, Kanamori K, Kobayashi Y, Kageyama H, Abe T, Nakaishi K (2015) High-level do** of nitrogen, phosphorus, and sulfur into activated carbon monoliths and their electrochemical capacitances. Chem Mater 27:4703–4712
Qu J, Geng C, Lv S, Shao G, Ma S, Wu M (2015) Nitrogen, oxygen and phosphorus decorated porous carbons derived from shrimp shells for supercapacitors. Electrochim Acta 176:982–988
Liu H, Wang M, Zhai D, Chen X, Zhang Z (2019) Design and theoretical study of carbon-based supercapacitors especially exhibiting superior rate capability by the synergistic effect of nitrogen and phosphor dopants. Carbon 155:223–232
Wang M, Liu H, Zhai D, Chen X, Zhang Z (2019) In-situ synthesis of highly nitrogen, sulfur co-doped carbon nanosheets from melamine-formaldehyde-thiourea resin with improved cycling stability and energy density for supercapacitors. J Power Sources 416:79–88
Augustyn V, Simon P, Dunn B (2014) Pseudocapacitive oxide materials for high-rate electrochemical energy storage. Energy Environ Sci 7:1597–1614
Zhai DD, Liu H, Wang M, Wu D, Chen XY, Zhang ZJ (2019) Integrating surface functionalization and redox additives to improve surface reactivity for high performance supercapacitors. Electrochim Acta 323:134810
Sun X, Xu D, Hu W, Chen X (2017) Template synthesis of 2D carbon nanosheets: Improving energy density of supercapacitors by dual redox additives anthraquinone-2-sulfonic acid sodium and KI. ACS Sustain Chem Eng 5:5972–5981
Acknowledgments
The authors gratefully thank financial support from National Natural Science Foundation of China (51602003), Startup Foundation for Doctors of Anhui University (J01003211), and University Student Innovation Experiment Project of Anhui University (S201910357378).
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Zhang, Z.J., Han, B., Zhao, K.Y. et al. Surface modification of carbon materials by nitrogen/phosphorus co-do** as well as redox additive of ferrous ion for cooperatively boosting the performance of supercapacitors. Ionics 26, 3027–3039 (2020). https://doi.org/10.1007/s11581-019-03406-6
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DOI: https://doi.org/10.1007/s11581-019-03406-6