Nature inspired approach to mimic design for increased specific capacitance as supercapacitor electrodes

Lee, Kwang Se; Phiri, Isheunesu; Park, Chan Woo; Kim, Saeheon; Ko, Jang Myoun

doi:10.1016/j.jcis.2021.02.039

Cited by 11 publications

(9 citation statements)

References 46 publications

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“…Meanwhile, the doped O, N, and P enable an enhanced electron-donating capacity of the carbon skeleton and improve the electrochemical performance by providing pseudocapacitance. As shown in Table , ONPC-700 is comparable to some other porous carbons when it is used as electrodes for supercapacitors. ,− …”

Section: Resultsmentioning

confidence: 91%

Chitosan-Based Synthesis of O, N, and P Codoped Hierarchical Porous Carbon as Electrode Materials for Supercapacitors

Zhang

et al. 2021

Energy Fuels

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Reasonable porous structure and proper heteroatom doping have great influences on electrode materials for supercapacitors. Herein, O, N, and P codoped hierarchical porous carbon (ONPC) was synthesized through a one-pot carbonization−activation strategy by using chitosan as the carbon precursor, phosphoric acid as the activator, and melamine foam as the skeleton. The use of melamine foam facilitated the formation of an interconnected carbon framework and introduced more nitrogen functional groups. Owing to the hierarchical pore structure, large surface area (1588 m 2 g −1 ), and significant heteroatom contents of O (8.61%), N (7.95%), and P (1.34%) in the carbon matrix, the 700 °C carbonized sample ONPC-700 had a specific capacitance of 230 F g −1 at 0.2 A g −1 . A high energy density of 7.5 Wh kg −1 at 100 W kg −1 was achieved for the supercapacitor fabricated with two identical ONPC-700 electrodes. Furthermore, the capacitance retention of the device was evaluated to be as high as 86.53% after 8000 cycles.

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Section: Resultsmentioning

confidence: 91%

Chitosan-Based Synthesis of O, N, and P Codoped Hierarchical Porous Carbon as Electrode Materials for Supercapacitors

Zhang

et al. 2021

Energy Fuels

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“…This demonstrates a decreased barrier for charge transfer and ionic diffusion. [ 27 ] As the weight ratio of AC: NiO increased (Table S1) beyond 20 times, the composites had poor performance, hence reduced specific capacitance in both composites. Composite AN 20 had 487.1 F/g and AN 30 had 394.0 F/g, both sample readings were taken at the same current density of 1 A/g.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical properties depending on heteroatom and surface property of various carbon sources/NiO composites as supercapacitor electrode

Lee

Mugobera

Park

et al. 2022

J Chinese Chemical Soc

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This study describes the creation and use of composites of nickel oxide and activated carbon as supercapacitor electrodes. A one-pot reaction is used to synthesize composite materials of nickel oxide and activated carbon (microalgae, asphaltene, and wood). A precursor solution of Ni(OH) 2 is blended with activated carbon through a precipitating method at a controlled weight ratio of nickel oxide and activated carbon, then the obtained powder is calcinated at 300 C for 3 hr. The composites are analyzed by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis (EDX). It is confirmed that nickel oxide sprouted on activated carbon surface. At a nickel oxide activated carbon weight ratio of 1:20, the greatest specific capacitances at 1 A/g current density are 624.2, 487.1, and 403 F/g, respectively.

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“…BET analysis was also carried out (Figure S10) to characterize the effective surface area. [25] The NCM-Mix-NTA exhibited a specific surface area of 83.1 m 2 g À 1 and an average pore size of 71.7 nm, while the NCM-Mix-NTA-rGO demonstrated a specific surface area of 169.3 m 2 g À 1 and an average pore size of 35.4 nm. Therefore, the introduction of rGO significantly enhanced the reactive surface area and reduced the pore size, which is advantageous for ion transport.…”

Section: Materials Characterizationmentioning

confidence: 96%

“…[13,24] In Figure 4d, The Mo 3d peak displayed two sub-peaks at 232.5 eV and 229.3 eV, they are contributed by Mo 4 + and Mo 6 + respectively. Combination the S 2p (Figure S11c) peak with two sub-peaks at 163.5 eV and 161.3 eV indicated the formation of M-S. [24][25][26][27] In the XPS spectrum of C element (Figure S11a), the C 1s peak exhibited two sub-peaks at 284.5 eV and 288.5 eV. The former was ascribed to sp2 hybridized carbon, while the latter corresponded to sp3 hybridized carbon, forming chemical bonds with oxygen or other heteroatoms, specifically corresponding to C=O and CÀ C bonds.…”

Section: Materials Characterizationmentioning

confidence: 98%

“…After the addtion of rGO (Figure 2f), the morphology skeleton of the product was more prominent and the surface was more uniform. The nucleation-growth of the combination of metal ions and S 2 + during the precipitation process were various in solvents with different polarity, and the binding of metal ions and S 2À in polar solvents was faster, [23][24][25] hence NCM-EG with EG as solvent showed less agglomeration than NCM-DI. Moerever, EG could act as surfactant which guided spatial assembly of nano-architectures and the surface structure of materials were more orderly.…”

Section: Materials Characterizationmentioning

confidence: 99%

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Solvent and Metal‐Ligand Co‐Assisted Synthesis of Self‐Supporting Ni‐Co‐Mo‐S Cross‐Linked Nanostructures for Supercapacitors

He,

Liu,

Xiang

et al. 2024

ChemistrySelect

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Construction of prosperous morphology and incorporation of multiple metals with synergistic effect can effectively enhance the electrochemical performance of electrode materials. Herein, transition metal (Ni, Co, Mo) sulfides (NCM‐DI, NCM‐DI‐NTA, NCM‐EG, NCM‐EG‐NTA, NCM‐Mix‐NTA) were synthesized, and the morphology was adjusted by incorporating metal ligand and altering the solvent atmosphere. The addition of ligand nitrilotriacetic acid (NTA) endowed the formation of cross‐linked network (NCM‐DI‐NTA, NCM‐EG‐NTA, NCM‐Mix‐NTA), and the as‐prepared materials generated in mixed solvent (NCM‐Mix‐NTA) displayed smaller size. Materials with NTA added (NCM‐DI‐NTA, NCM‐EG‐NTA, NCM‐Mix‐NTA) displayed higher specific capacity (754, 943 and 1206 F g−1, respectively), which is much higher than NCM‐EG (909 F g−1) and NCM‐DI (331 F g−1). After doped with rGO, the materials (NCM‐Mix‐NTA‐rGO) exhibited a specific capacity of 1984 F g−1 at 1 A g−1. When assembled into asymmetric supercapacitors, it delivered the energy density of 61.6 Wh kg−1 at a power density of 901.4 W kg−1, and maintained the 86.5 % of their initial capacity even after 5000 cycles.

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Nature inspired approach to mimic design for increased specific capacitance as supercapacitor electrodes

Cited by 11 publications

References 46 publications

Chitosan-Based Synthesis of O, N, and P Codoped Hierarchical Porous Carbon as Electrode Materials for Supercapacitors

Chitosan-Based Synthesis of O, N, and P Codoped Hierarchical Porous Carbon as Electrode Materials for Supercapacitors

Electrochemical properties depending on heteroatom and surface property of various carbon sources/NiO composites as supercapacitor electrode

Solvent and Metal‐Ligand Co‐Assisted Synthesis of Self‐Supporting Ni‐Co‐Mo‐S Cross‐Linked Nanostructures for Supercapacitors

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