Easy fabrication and high electrochemical capacitive performance of hierarchical porous carbon by a method combining liquid-liquid phase separation and pyrolysis process

Fan, Huili; Ran, Fen; Zhang, Xuan-xuan; Song, Hee‐Jung; Jing, Wen-xia; Shen, Kuiwen; Kong, Ling‐Bin; Kang, Long

doi:10.1016/j.electacta.2014.06.118

Cited by 39 publications

(12 citation statements)

References 44 publications

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“…As shown in Fig. 3 d, the peaks centered at 531.1, 532.6, and 534.5 eV were assigned to V–N–O, C = O/N–O, and C–OH, respectively [ 19 , 31 , 39 , 40 ]. In addition, the peaks at approximately 514.1 and 521.6 eV typical of vanadium in the VN structure, and the peaks at 517.1 and 524.4 eV arose from the V–O bonds on the surface of VN/C (I) (Fig.…”

Section: Resultsmentioning

confidence: 99%

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A Novel Hierarchical Porous 3D Structured Vanadium Nitride/Carbon Membranes for High-performance Supercapacitor Negative Electrodes

Yang

Zhao

et al. 2018

Nano-Micro Lett.

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Transition-metal nitrides exhibit wide potential windows and good electrochemical performance, but usually experience imbalanced practical applications in the energy storage field due to aggregation, poor circulation stability, and complicated syntheses. In this study, a novel and simple multi-phase polymeric strategy was developed to fabricate hybrid vanadium nitride/carbon (VN/C) membranes for supercapacitor negative electrodes, in which VN nanoparticles were uniformly distributed in the hierarchical porous carbon 3D networks. The supercapacitor negative electrode based on VN/C membranes exhibited a high specific capacitance of 392.0 F g−1 at 0.5 A g−1 and an excellent rate capability with capacitance retention of 50.5% at 30 A g−1. For the asymmetric device fabricated using Ni(OH)2//VN/C membranes, a high energy density of 43.0 Wh kg−1 at a power density of 800 W kg−1 was observed. Moreover, the device also showed good cycling stability of 82.9% at a current density of 1.0 A g−1 after 8000 cycles. This work may throw a light on simply the fabrication of other high-performance transition-metal nitride-based supercapacitor or other energy storage devices.Electronic supplementary materialThe online version of this article (10.1007/s40820-018-0217-1) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

“…Polyethylene glycol (PEG, M w = 400) was obtained from Aladdin (Shanghai, China). PAN was prepared by solution polymerization as previously described [ 39 , 40 ]. The tri-block copolymer (BCP) PAN- b -PMMA- b -PAN was synthesized by reversible addition fragmentation chain (RAFT) polymerization as previously described [ 40 ].…”

Section: Methodsmentioning

confidence: 99%

A Novel Hierarchical Porous 3D Structured Vanadium Nitride/Carbon Membranes for High-performance Supercapacitor Negative Electrodes

Yang

Zhao

et al. 2018

Nano-Micro Lett.

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“…The electrochemical performances of electrode materials were tested in a three-electrode system in 2 M KOH aqueous solution at room temperature with a platinum foil used as counter electrode, and the saturated calomel used as reference electrode (SCE). The working electrodes were prepared according to the method reported in the literature [ 28 , 29 ]. Typically, 80 wt% of active materials was mixed with 7.5 wt% of acetylene black, 7.5 wt% of graphite, and 5 wt% polytetrafluoroethylene, and then pressed onto a Ni foam current collector at 10 MPa and dried at 60°C for 8 h. The total quantity of the active substance was 4 mg and had a geometric surface area of 1 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Novel Hybrid Nanoparticles of Vanadium Nitride/Porous Carbon as an Anode Material for Symmetrical Supercapacitor

et al. 2016

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Hybrid materials of vanadium nitride and porous carbon nanoparticles (VN/PCNPs) were fabricated by a facile pyrolysis process of vanadium pentoxide (V2O5) xerogel and melamine at relatively low temperature of 800 °C for supercapacitor application. The effects of the feed ratio of V2O5 to melamine (r), and nitrogen flow rate on the microstructure and electrochemical performance were also investigated. It was found that the size of the as-synthesized nanoparticles is about 20 nm. Both r value and N2 flow rate have enormous impacts on morphology and microstructure of the nanoparticle, which correspondingly determined the electrochemical performance of the material. The VN/C hybrid nanoparticles exhibited high capacitive properties, and a maximum specific capacitance of 255.0 F g−1 was achieved at a current density of 1.0 A g−1 in 2 M KOH aqueous electrolyte and the potential range from 0 to −1.15 V. In addition, symmetrical supercapacitor fabricated with the as-synthesized VN/PCNPs presents a high specific capacitance of 43.5 F g−1 at 0.5 A g−1 based on the entire cell, and an energy density of 8.0 Wh kg−1 when the power density was 575 W kg−1. Even when the power density increased to 2831.5 W kg−1, the energy density still remained 6.1 Wh kg−1.Graphical Abstract Electronic supplementary materialThe online version of this article (doi:10.1007/s40820-016-0105-5) contains supplementary material, which is available to authorized users.

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“…At the molecular level, the completely different components of materials not only greatly improve the electrochemical properties, but also provide a synthesis technology of nanocomposite [16][17][18][19][20][21][22][23]. There are several methods to prepare organic-inorganic nanometer composites, for example, electrochemical method [24][25][26][27], in-situ method [28,29], etc. Recently, Pan and coworkers synthesized nanometer tubular PANI using crystaloxidative MnO 2 as a template that was dissolved in the reductive environment during synthesis [30].…”

Section: Introductionmentioning

confidence: 99%

Preparation of nano-PANI@MnO2 by surface initiated polymerization method using as a nano-tubular electrode material: The amount effect of aniline on the microstructure and electrochemical performance

Ran

Yang

Zhao

et al. 2015

Journal of Energy Chemistry

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Easy fabrication and high electrochemical capacitive performance of hierarchical porous carbon by a method combining liquid-liquid phase separation and pyrolysis process

Cited by 39 publications

References 44 publications

A Novel Hierarchical Porous 3D Structured Vanadium Nitride/Carbon Membranes for High-performance Supercapacitor Negative Electrodes

A Novel Hierarchical Porous 3D Structured Vanadium Nitride/Carbon Membranes for High-performance Supercapacitor Negative Electrodes

Novel Hybrid Nanoparticles of Vanadium Nitride/Porous Carbon as an Anode Material for Symmetrical Supercapacitor

Preparation of nano-PANI@MnO2 by surface initiated polymerization method using as a nano-tubular electrode material: The amount effect of aniline on the microstructure and electrochemical performance

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