Nitrogen-doped biomass/polymer composite porous carbons for high performance supercapacitor

Shu, Yu; Maruyama, Jun; Iwasaki, Satoshi; Maruyama, Shohei; Shen, Yehua; Uyama, Hiroshi

doi:10.1016/j.jpowsour.2017.08.059

Cited by 61 publications

(12 citation statements)

References 51 publications

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“…(C) C cell as a function of current density in different electrolytes. (F) Ragone plot of power density vs energy density in 2 M H 2 SO 4 (top) and 1 M BMIMBF 4 /AN (bottom) electrolytes, as well as previously reported symmetric carbon SCs (scatter dots). − …”

Section: Resultssupporting

confidence: 52%

Fabrication of Hierarchical Porous Carbon Frameworks from Metal-Ion-Assisted Step-Activation of Biomass for Supercapacitors with Ultrahigh Capacitance

Chang

Wang

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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Advancement in the application of biomass-derived carbon is viewed as one of the most important drivers of sustainable and renewable technologies for energy storage. High-performance biochar with a well-defined structure is extremely attractive as a supercapacitor electrode material. Herein, carbon with an ultrahigh capacitance of 682 F/g at 0.2 A/g for biochar materials and remarkable cycling stability was synthesized from Chinese parasol fluff (CPF). Three-dimensional interconnected hierarchical porous carbon was fabricated via a feasible metal-ion-assisted step-activation method from the biomass precursor. CO2 was used to treat the carbonaceous material from CPF after molten KOH activation for pore structure tuning, while Co2+ was selected as the metal ion additive for directing graphitization. In addition to the extremely high capacitance, the as-synthesized carbon also delivered an energy density of 46.38 W h/kg at a power density of 300 W/kg in 1-butyl-3-methyl imidazolium tetrafluoroborate/acetonitrile (BMIMBF4/AN) electrolyte, which is much better than for most reported biochar materials and about 10 times better than for commercial supercapacitors. The current work points out an excellent sustainable source for fabrication of high-performance electrode materials and, more importantly, a feasible design strategy route for improvement of the electrochemical performance of energy storage devices.

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Section: Resultssupporting

confidence: 52%

Fabrication of Hierarchical Porous Carbon Frameworks from Metal-Ion-Assisted Step-Activation of Biomass for Supercapacitors with Ultrahigh Capacitance

Chang

Wang

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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“…The maximum areal capacitance is 1.36 Fcm À2 at ag ravimetric capacitance of 136 Fg À1 .T he relatively high gravimetric and areal capacitances can be demonstrated simultaneously for NPGMs-based supercapacitors, manifesting their good compatibility.T he total capacitances of the NPGMs-based supercapacitors are much higher than most previously reported values for high-performance porous carbon-based supercapacitors, such as N1-GDY//N1-GDY, [47] HGA//HGA, [48] CNM60-90//CNM60-90, [49] KPAC-800//KPAC-800, [50] porous graphene//porous graphene, [51] CGNS 3-1073 //CGNS 3-1073 , [52] NPGCs-850//NPGCs-850, [53] and AGMn-120 min//AGMn-120 min [54] (Figure 6e). The powera nd energy densities of NPGMs-based supercapacitors are at am edium level in comparison with some reported carbon-based superca- pacitors, such as A-p-BC-N-25//A-p-BC-N-25, [55] NPGCs-850// NPGCs-850, [53] HPCNC-700-a//HPCNC-700-a, [28] CGNS 3-1073 // CGNS 3-1073 , [52] B/N-CS//B/N-CS, [56] PGOCN//PGOCN, [57] HPC// HPC, [58] NDPMC//NDPMC, [59] N1-GDY//N1-GDY, [47] SSC-KOH// SSC-KOH, [60] and KPAC-800//KPAC-800 [50] (Figure 6f). However, the mass loadings of the NPGMs electrodes (5, 7, and 10 mg cm À2 )a re much higher than those reported values.…”

Section: Resultsmentioning

confidence: 99%

High Capacitive Energy Storage of Nest‐Like Porous Graphene Microspheres Electrode with High Mass Loading

Wang

Song

et al. 2019

ChemSusChem

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Nest‐like porous graphene microspheres (NPGMs) are grown by using a chemical vapor deposition (CVD) method in a fluidized bed reactor from methane and basic magnesium carbonate microspheres (synthesized by a stirring‐induced crystallization approach) as carbon source and template, respectively. The CVD‐derived NPGMs have a few‐layer structure and high electrical conductivity, as well as a three‐dimensional individual macroarchitecture accompanied with well‐developed pore channels and great structural integrity. As the electrode for a symmetric supercapacitor, the effect of different mass loadings for NPGMs‐based electrodes on the capacitive energy‐storage performance is investigated. Superior electrochemical properties with respect to gravimetric, areal, and total capacitances, rate capability, and durability are shown by the NPGMs‐based symmetric supercapacitors, even at mass loadings up to 10 mg cm−2. Moreover, the electrochemical behavior of the NPGMs‐based electrode is much superior to those of two‐dimensional lamella‐like graphene and commercial activated carbon.

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“…7b), which correspond to the aliphatic carbon at 284.4 eV (C-C), the hydroxyl and phenolic groups at 285.9 eV (COR), the ketone and quinone groups at 287.6 eV (C]O), and carboxyl groups at 289.1 eV (COOR). 50 The four characteristic peaks of O1s (Fig. 6c) are concentrated at 531.5 eV, 532.4 eV, 533.3 eV and 534.2 eV, respectively.…”

Section: Morphology and Microstructural Characterizationmentioning

confidence: 93%

Preparation of chrome-tanned leather shaving-based hierarchical porous carbon and its capacitance properties

Shaolan

Ren

et al. 2019

RSC Adv.

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Nitrogen-doped biomass/polymer composite porous carbons for high performance supercapacitor

Cited by 61 publications

References 51 publications

Fabrication of Hierarchical Porous Carbon Frameworks from Metal-Ion-Assisted Step-Activation of Biomass for Supercapacitors with Ultrahigh Capacitance

Fabrication of Hierarchical Porous Carbon Frameworks from Metal-Ion-Assisted Step-Activation of Biomass for Supercapacitors with Ultrahigh Capacitance

High Capacitive Energy Storage of Nest‐Like Porous Graphene Microspheres Electrode with High Mass Loading

Preparation of chrome-tanned leather shaving-based hierarchical porous carbon and its capacitance properties

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