Maximizing pore and heteroatom utilization within N,P-co-doped polypyrrole-derived carbon nanotubes for high-performance supercapacitors

Luo, Xinying; Yang, Qi; Dong, Yanli; Huang, Xiaoxiong; Kong, Debin; Wang, Bin; Liu, Huimin; Xiao, Zhichang; Zhi, Linjie

doi:10.1039/d0ta06238c

Cited by 71 publications

(32 citation statements)

References 60 publications

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“…has also been assisted thoroughly to the various applied fields (Fig. 3), such as supercapacitors materials [18][19][20], solar cells [21][22][23], as battery electrode's [24,25], catalyst supports systems for proton exchange membrane fuel cells [26][27][28], and also to develop polymer nanocomposites for various applications [29][30][31] i.e. in drug delivery, bio-imaging [32][33][34], medicinal biology [35][36][37][38], aerospace [39,40], new age weapon technology [41,42] etc.…”

Section: Introductionmentioning

confidence: 99%

Solid waste-derived carbon nanomaterials for supercapacitor applications: a recent overview

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Solid waste-derived carbon nanomaterials for supercapacitor applications: a recent overview

et al. 2021

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“…Figure 3a displays the comparative CV curves of NSC, NCuSC, and NCoSC at 30 mV s −1 scan rate over the working potential window of −0.1 to 0.4 V. The CV curves showed that the integrated area of NCoSC was larger than the other two implying the best electrochemical performance of the NCoSC electrode. The CV curves also showed a pair of redox peaks in all the electrodes indicating that the main charge storage characteristics were dominated by the reversible Faradic redox reaction of metal sulfides [2,4,[33][34][35]. CV curves also suggested that the NCoSC and NCuSC electrodes showed pure battery-like behavior.…”

Section: Electrochemical Characterization Of Electrodesmentioning

confidence: 91%

“…Higher retention of capacitance of NCoSC is attributed to the synergistic effect between the transition metals carbon coating. Improvement in electrical conductivity is attributed to the interconnected network structure of NCoSC electrode, contributing to achieving higher electrochemical properties [4][5][6]12,32,38]. EIS is a principal method to measure the internal resistance and ion diffusion properties of the materials.…”

Section: Electrochemical Characterization Of Electrodesmentioning

confidence: 99%

“…The "b"values of the anodic peak were calculated to be 0.63, 0.64, and 0.68 (Figure 3c) of NCoSC, NCuSC, and NSC electrodes, respectively. The calculated value of "b"indicated that the redox process wascontrolled by the diffusion redox process when the transition metals were introduced in carbon-coated nickel sulfides [4,6,38]. The capacitance of the electrode materials was measured from the discharge time of the galvanostatic chargedischarge profiles.…”

Section: Electrochemical Characterization Of Electrodesmentioning

confidence: 99%

“…However, the low energy density value limits its wide range of practical applications. Therefore, the improvement of energy density of supercapacitors is the prime focus of research nowadays without affecting the other electrochemical properties [1][2][3][4]. Electrode materials play a key role on the performance of the supercapacitor devices.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Transition Metals (Cu and Co) on the Carbon-Coated Nickel Sulfide Used as Positive Electrode Material in Hybrid Supercapacitor Device

et al. 2021

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Herein, a facile, environment-friendly and cost-effective approach was followed for the preparation of metal sulfide-based supercapacitor electrodes. The effect of transition metal interrogation on the morphology and electrochemical performance of carbon-coated nickel sulfide composite electrode was investigated. Physicochemical characterization showed that the enhancement in electrical conductivity and electrochemical reaction sites with the introduction of copper (Cu) and cobalt (Co) was due to the variation in morphology. Fast ionic transformation and improvement in the number of redox active sites might improve the supercapacitor performance. The electrochemical experiment showed that the NCoSC electrode exhibited the highest capacitance value of ~760 F g−1 at 2 A g−1 current density as compared to the NCuSC and NSC electrodes. Therefore, a hybrid supercapacitor (HSC) device was fabricated by using NCoSC as the positive electrode and thermally reduced graphene oxide (TRGO) as the negative electrode. The fabricated device demonstrated maximum energy density of ~38.8 Wh Kg−1 and power density of 9.8 kW Kg−1. The HSC device also showed ~89.5% retention in specific capacitance after 10,000 charge–discharge cycles at 12 A g−1 current density. So, the tuning of electronic and physical properties by the introduction of Cu and Co on nickel sulfide improved the supercapacitor performance.

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Flexible and Alternately Layered High‐Loading Film Electrode based on 3D Carbon Nanocoils and PEDOT:PSS for High‐Energy‐Density Supercapacitor

Huang

Zhao

Cong

et al. 2022

Adv Funct Materials

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The development of flexible carbon‐based film electrodes with high loading and sufficient electron/ion transport channels is of great significance but still challenging. Herein, a flexible high‐loading (over 15 mg cm–2) film with 3D hierarchical pores is prepared by an alternate deposition of carbon nanocoils (CNCs) and poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). The unique alternate architecture of CNC/PEDOT:PSS bilayers possesses porous structure constructed by interconnected CNCs, which serves as transfer channels and storage chambers of ions. Meanwhile, the PEDOT:PSS layers anchoring CNCs function as not only the cement to ensure the stability of the film structure but also the current collectors to improve electron transfer kinetics between interlayers. The film electrode shows excellent flexibility and electrochemical properties. It delivers a high areal capacitance of 1402.5 mF cm–2 at 0.25 mA cm–2 and a superior stability even at an extremely high current density of 50 mA cm–2 after 10 000 cycles. The corresponding solid‐state supercapacitor has great energy storage ability and steady capacitance response under various deformation. The device achieves a superb energy density of 211 μW h cm–2 with a wide potential window of 2 V. This strategy paves a road for the controllable fabrication of high‐performance flexible electrodes and supercapacitors.

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Maximizing pore and heteroatom utilization within N,P-co-doped polypyrrole-derived carbon nanotubes for high-performance supercapacitors

Abstract: Promoting the efficient utilization of both the pores and heteroatoms remains a highly challenging endeavor, yet is of crucial significance to enhance the specific capacitance and energy density of carbon-based...

Cited by 71 publications

References 60 publications

Solid waste-derived carbon nanomaterials for supercapacitor applications: a recent overview

Solid waste-derived carbon nanomaterials for supercapacitor applications: a recent overview

Influence of Transition Metals (Cu and Co) on the Carbon-Coated Nickel Sulfide Used as Positive Electrode Material in Hybrid Supercapacitor Device

Flexible and Alternately Layered High‐Loading Film Electrode based on 3D Carbon Nanocoils and PEDOT:PSS for High‐Energy‐Density Supercapacitor

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