N-doped hierarchically porous carbon derived from grape marcs for high-performance supercapacitors

Zhang, Jinhao; Hou, Chen; Bai, Liangjiu; Xu, Ming; Luo, Chenli; Chen, Hou; Wei, Daming; Wang, Wenxiang

doi:10.1016/j.jallcom.2020.157207

Cited by 121 publications

(41 citation statements)

References 65 publications

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“…The GCD profiles for TD-Inactivation, TD-NaOH, TD-ZnCl2, and TD-H3PO4, samples showed a nearly symmetric triangular shape with a slight curvature. It characterizes normal electric double-layer capacitor properties followed by pseudocapacitance [57] as shown in figure 6. This is consistent with the CV analysis that has been discussed previously.…”

Section: Electrochemical Analysismentioning

confidence: 99%

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor

Taer

Apriwandi

Hasanah

et al. 2021

CST

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In this study, the activated carbon with enriched nanofiber obtained from free-binder materials. It was conducted tofu dregs carbon nanofiber as electrode material for supercapacitor without the addition of pVdF/PTFE. The chemical impregnation of NaOH, ZnCl2 and H3PO4 at high-temperature pyrolysis in an N2-CO2 environment converted the tofu dregs into carbon coin. Subsequently, the physical properties including, microcrystalline, morphology, element analysis, and electrochemical properties of specific capacitance were investigated. The morphological structure of activated carbon showed high nanofiber density and was decorated by sponge-like pores. In addition, the nanofiber contains oxygen content of 12.70% which can act as self-doping due to the pseudo-capacitance properties. Furthermore, the two-electrode system obtained a specific capacitance of 163 F g-1 in 1 M H2SO4 electrolyte. The results showed that tofu dregs-based activated carbon coins are sustainable and efficient to obtain high-dense nanofiber structure as electrode materials for energy storage applications.

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Section: Electrochemical Analysismentioning

confidence: 99%

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor

Taer

Apriwandi

Hasanah

et al. 2021

CST

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“…This condition generates allotropes with completely separate properties as well as confirms the potential application of porous carbon biomass in high‐energy supercapacitor electrodes. Previous investigations have also recorded several biomass species as precursors to porous carbon materials, including tea waste, [8] grape marcs, [9] Juncus effuses, [10] and jengkol shell [11] . Moringa Olifiera ‐based activated carbon produced a high surface area of 2,250 m 2 g −1 and specific energy of 25.8 Wh kg −1 , approximately three times the earlier report [12] .…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh Capacitive Supercapacitor Derived from Self‐Oxygen Doped Biomass‐Based 3D Porous Carbon Sources

2021

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This study reported an ultrahigh specific capacitance of a supercapacitor, using self‐oxygen doped 3D‐porous carbon derivatives from dried banana leaves. The samples were synthesized by ZnCl2 impregnation at different temperature pyrolysis of 700–900 °C. Furthermore, the overall process significantly increased the specific surface area from 429.6 to 860.4 m2 g−1 followed by the formation of 3D‐interconnected pores structures. Unexpectedly, the activated carbon demonstrated high‐level oxygen dopants between 9.47–12.45%. These valuable physical features showed a ultrahigh specific capacitance of 401 F g−1 and 235 F g−1 in a two‐electrode configuration system, using electrolytes of 1 M H2SO4 and 6 M KOH, respectively. Also, electrochemical properties were evaluated in the form of pellet binder‐free materials. Porous carbon sources were known to generate extensive specific energy of 55.69 Wh kg−1 and specific power of 200.09 W kg−1. Based on the technique and results, the use of hierarchical 3D‐porous carbon derivatives is validated as robust electrode materials in developing high‐performance electrochemical energy storage.

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“…Figure 4a shows the CV curves of the SL-Precursor and SL-800 samples. In general, SLs samples show a quasi-rectangular curve which indicates the electrochemical double layer (EDLC) properties [23]. In addition, in Figure 4(a) there is no apparent pseudocapacitance effect confirming the sample has high porous carbon.…”

Section: Figure 3 the Density Of Sl-precursor And Sl-800 Samplesmentioning

confidence: 91%

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

Windasari

Taslim

2022

J. Phys.: Conf. Ser.

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Porous carbon based on bio/organic waste is a very popular raw material used in high-level applications due to its advantages of high porosity, high electrical conductivity, suitable pore structure, and good stability. In this study, bio-kitchen waste is used as a precursor to obtaining high functional activated carbon which is applied to electrochemical energy storage applications. This kitchen waste is focused on Salam leaves (Syzygium polyanthum (Wight) Walp.). Precursors are converted to porous carbon through a simple technique and a green approach without the addition of synthetic materials. In addition, activated carbon is designed in a new form of monolith without a binder. The material properties were thoroughly investigated through monolith dimension reduction and X-ray diffraction. The dimensions of the monolith are reviewed based on mass, thickness, and diameter. The activated carbon obtained shows porosity and amorphous properties which are useful in supporting its electrochemical natures. Furthermore, the electrochemical properties of carbon electrodes were reviewed using standard cyclic voltammetry and galvanostatic charge-discharge methods in a two-electrode system. In addition, a 1M H2SO4 aqueous electrolyte was selected to enhance the supercapacitor cell performance and it exhibit high specific capacitance of 145 F g−1. Based on these results, it is surprising that bio-kitchen waste has great potential as a high-carbon material for high-level applications.

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N-doped hierarchically porous carbon derived from grape marcs for high-performance supercapacitors

Cited by 121 publications

References 65 publications

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor

Ultrahigh Capacitive Supercapacitor Derived from Self‐Oxygen Doped Biomass‐Based 3D Porous Carbon Sources

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

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