A facile Zn involved self-sacrificing template-assisted strategy towards porous carbon frameworks for aqueous supercapacitors with high ions diffusion coefficient

Liang, Honghuo; Lu, Zhongyu; Wang, Dewei

doi:10.1016/j.diamond.2020.107696

Cited by 11 publications

(1 citation statement)

References 56 publications

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“…The diffusion resistance and diffusion coefficient of H + ions can be further expressed by eqn (6) and (7). 47,54,56–58 Z ′ = σω −0.5 + R s + R ct where Z ′ is the real part of impedance, σ is the diffusion resistance (Ω s −0.5 ), ω is the angular frequency (rad s −1 ), R s is the electrolyte solution resistance (Ω), R ct is the charge transfer resistance (Ω), D is the H + diffusion coefficient (cm 2 s −1 ), R is the gas constant (8.314 J mol −1 K −1 ), T is the Kelvin temperature (293.15 K), A is the surface area of the electrode (cm 2 ), C is the molar concentration of electrolyte (mol cm −3 ), n is the electron transfer number, and F is the Faraday constant (96 485 C mol −1 ). According to Fig.…”

Section: Resultsmentioning

confidence: 99%

Redox molecule Alizarin red S anchored on biomass-derived porous carbon for enhanced supercapacitive performance

Bao

Chen

et al. 2022

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Redox molecule Alizarin red S anchored on biomass-derived porous carbon for enhanced supercapacitive performance

Bao

Chen

et al. 2022

New J. Chem.

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Defect Engineering of Carbons for Energy Conversion and Storage Applications

Luo

Zheng

Lai

et al. 2023

Energy & Environ Materials

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To realize future carbon neutrality, clean and sustainable electrochemical energy conversion and storage technologies are indispensable. Current devices include rechargeable batteries (e.g., Li-ion, Na-ion, and K-ion battery), fuel cells, and supercapacitors (SCs) that hold crucial positions in solving the current energy crisis and environmental pollution issues. [1][2][3][4] SCs and rechargeable batteries are the most popular electrochemical energy storage devices meeting future energy development demands. SCs usually possess high-power densities and long cycling lives but still suffer from low-energy densities. By comparison, rechargeable batteries have high-energy densities but still limited by lowpower densities, poor cycling stabilities, and short cyclic lives. Such tremendous differences in electrochemical properties between SCs and rechargeable batteries mainly originate from the differences in charge storage mechanisms. [5] According to the different charge storage mechanisms, SCs can be classified into electric double-layer capacitors (EDLCs), pseudocapacitors, and hybrid capacitors. [6,7] SCs made of carbon materials, such as carbon-based EDLCs, store electric charges at the electrode and electrolyte interface via physical adsorption/desorption of electrolyte ions. This process only involves surface reactions of ions without ion diffusion within the bulk electrode materials. [7][8][9] Pseudocapacitance often involves a Faradaic charge storage process by fast and highly reversible surface or near-surface redox reactions. Typically, pseudocapacitive electrode could be distinguished in underpotential deposition, redox reactions of transition metal oxides, and intercalation pseudocapacitance. [7] In most cases, functionalized porous carbons, such as oxygen-containing functional groups or heteroatomdoped carbon materials, have both EDL capacitance and pseudocapacitive storage mechanisms. Hybrid capacitors combine the advantages of EDLCs and pseudocapacitors, in which one electrode stores electric charge through battery-type faradaic process, while the other electrode stores electric charge based on capacitive mechanism. [10,11] Rechargeable batteries, such as Li-ion batteries (LIBs) and post-LIBs based on different charge carriers such as Na + and K + , store electric charges through intercalation, deintercalation, or adsorption of ions between the anode and cathode during charge/discharge processes. [1] For electrocatalysis, processes such as oxygen reduction reaction (ORR) in fuel cells and hydrogen evolution reaction (HER), as well as oxygen evolution reaction (OER) in water splitting, N 2 reduction reaction (NRR) and CO 2 reduction reaction (CO 2 RR), all often require high overpotentials and manifest sluggish kinetics in the absence of catalysts. The electrocatalytic processes usually take place according to three critical steps: 1) mass diffusion; 2) electron transfer; and 3) surface or interface reactions. [12] Generally, electrocatalytic ORR is a three-phase reaction and mainly includes two pathways:...

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Biomass blend derived porous carbon for aqueous supercapacitors with commercial-level mass loadings and enhanced energy density in redox-active electrolyte

Choudhury

Muigai

Kalita

et al. 2022

Applied Surface Science

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A facile Zn involved self-sacrificing template-assisted strategy towards porous carbon frameworks for aqueous supercapacitors with high ions diffusion coefficient

Cited by 11 publications

References 56 publications

Redox molecule Alizarin red S anchored on biomass-derived porous carbon for enhanced supercapacitive performance

Redox molecule Alizarin red S anchored on biomass-derived porous carbon for enhanced supercapacitive performance

Defect Engineering of Carbons for Energy Conversion and Storage Applications

Biomass blend derived porous carbon for aqueous supercapacitors with commercial-level mass loadings and enhanced energy density in redox-active electrolyte

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