High-performance asymmetric supercapacitor based on urchin-like cobalt manganese oxide nanoneedles and biomass-derived carbon nanosheet electrode materials

Hamouda, Hamouda Adam; Cui, Shuzhen; Dai, Xiuwen; Xie, Xuan; Peng, Hui; Ma, Guofu; Lei, Ziqiang

doi:10.1016/j.est.2021.103616

Cited by 19 publications

(10 citation statements)

References 51 publications

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“…The lowering of the peak of ECG-46 different from ECG-36 suggests the strong carboxylate modification effect. On the other hand, graphite and ECG-24 displayed obvious diffraction peaks at 2θ positions of 26.3 and 45.5°, which are characteristic of (002) and (100) lattice planes correspondingly attributed to graphitic carbon layers and hexagonal graphite ( Hamouda et al, 2022 ). Furthermore, Raman spectra were taken to examine the modification effect.…”

Section: Resultsmentioning

confidence: 99%

Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors

Abdu

Hamouda²,

Orege³

et al. 2022

Front. Chem.

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In the presence of dry ice, a series of graphitic materials with carboxylated edges (ECGs) were synthesized by ball milling graphite for varied times (24, 36, and 46 h). The influence of carboxylation on the physiochemical characteristics and electrochemical performance as effective electrodes for supercapacitors were assessed and compared with pure graphite. Several characterization techniques were employed to investigate into the morphology, texture, microstructure, and modification of the materials. Due to its interconnected micro-mesoporous carbon network, which is vital for fast charge-discharge at high current densities, storing static charges, facilitating electrolyte transport and diffusion, and having excellent rate performance, the ECG-46 electrode among the investigated samples achieved the highest specific capacitance of 223 F g−1 at 0.25 A g−1 current density and an outstanding cycle stability, with capacitance retention of 90.8% for up to 10,000 cycles. Furthermore, the symmetric supercapacitor device based on the ECG-46 showed a high energy density of 19.20 W h kg−1 at 450.00 W kg−1 power density. With these unique features, ball milling of graphitic material in dry ice represents a promising approach to realize porous graphitic material with oxygen functionalities as active electrodes.

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Section: Resultsmentioning

confidence: 99%

Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors

Abdu

Hamouda²,

Orege³

et al. 2022

Front. Chem.

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“…Due to their small crystal size, these materials significantly improve the specific surface area, ensure the effective contact between the electrolyte and the electrode surface, and thus enhance the charge transfer rate at the electrode/electrolyte interface. Hamouda et al 45 prepared a Co 2 Mn 3 O 8 nanoneedle by a one-step hydrothermal method using nickel foam as a support framework for the nanoneedle growth (Fig. 4(a)).…”

Section: One Dimensional Co-based Materials For Supercapacitorsmentioning

confidence: 99%

“…Hamouda et al 45 prepared a Co 2 Mn 3 O 8 nanoneedle by a one-step hydrothermal method using nickel foam as a support framework for the nanoneedle growth (Fig. 4(a)).…”

Section: Morphological Control Of the Co-based Materials Of Supercapa...mentioning

confidence: 99%

“…Fig.4(a) Schematic of the preparation process of Co 2 Mn 3 O 8 nanoneedle arrays on the NF;45 Copyright 2022, Elsevier. FESEM and TEM images of (b) PAN nanofibers, (c) the core-shell PAN@NiCo 2 S 4 precursor composite nanofibers;48 Copyright 2015, Wiley-VCH; (d) CV curves at various scan rates and (e) GCD curves at various current densities of H-NiCo 2 O 4 /NFs 49.…”

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confidence: 99%

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Morphological control and performance engineering of Co-based materials for supercapacitors

Pan,

Wang,

Wang

et al. 2024

Phys. Chem. Chem. Phys.

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“…The properties of the electrode materials determine how well supercapacitors perform. ( Fan et al, 2015 ), and the types of electrodes, such as carbon materials ( Yue et al, 2021 ), hydroxides ( Ji et al, 2021 ; Cui et al, 2022 ), sulfides ( Reddy et al, 2018 ), and transition metal oxides electrodes ( Xie et al, 2019 ; Hamouda et al, 2022 ). Carbon materials, like porous carbon, carbon nanosheet, carbon fiber, carbon network, carbon nanotube and graphene are ideal electrode materials for supercapacitors due to their high surface area ( Ghanem et al, 2021 ), premium thermal stability and high electrical conductivity ( Vargheese et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional nanoporous activated carbon electrode derived from acacia wood for high‐performance supercapacitor

Hamouda

Abdu

et al. 2022

Front. Chem.

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Herein, the novel acacia wood based hierarchical porous activated carbons (AWCs) are easily prepared, low cost and have excellent characterization, such as special biomass nanopores via structural stability and large specific surface areas. Activating agents such as KOH, ZnCl2, and H3PO4 have been used to convert acacia wood carbon into active carbons such as AWC-K, AWC-Z, and AWC-P, respectively, which are named after the activating agent. As a supercapacitor electrode, the AWC-K sample has a high yield was 69.8%, significant specific surface area of 1563.43 m2g−1 and layer thickness of 4.6 mm. Besides that, it showed specific capacitance of 224.92 F g−1 at 0.5 A g−1 in 2 M KOH as electrolyte. In addition, the AWC-K//AWC-K symmetrical supercapacitor device displays high energy density of 23.98 Wh kg−1 at 450 W kg−1 power density with excellent cycling number stability was 93.2% long lifetime of 10,000 cycles using 0.5 M Na2SO4 as electrolyte. The high electrochemistry performance mainly contributed the special biomass pores structure. Therefore, the presented approach opens new avenues in supercapacitor applications to meet energy storage.

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High-performance asymmetric supercapacitor based on urchin-like cobalt manganese oxide nanoneedles and biomass-derived carbon nanosheet electrode materials

Cited by 19 publications

References 51 publications

Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors

Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors

Morphological control and performance engineering of Co-based materials for supercapacitors

Three‐dimensional nanoporous activated carbon electrode derived from acacia wood for high‐performance supercapacitor

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