Facile synthesis of the 3D interconnecting petal-like NiCoO2/C composite as high-performance supercapacitor electrode materials

Lin, Jianhui; Chen, Hong; Shuai, Minmin; Wu, Wenzhi; Wang, Yao; Wen-gong, Zhang; Ling, Qidan

doi:10.1016/j.mtnano.2019.100046

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…The double peaks at 779.7 and 795.1 eV belong to Co 3+ 2p 3/2 and Co 3+ 2p 1/2 , and the other pair at 780.5 and 796.8 eV correspond to Co 2+ 2p 3/2 and Co 2+ 2p 1/2 . The binding energies of Ni 2p and Co 2p are consistent with the results measured in the literature [18,44]. In the area of O 1s spectrum (Figure 2f), oxygen in the air reacts with the metal-oxygen bond in NiCo2O4 with peaks of 529.5 eV and 530.7 eV, respectively [45,46].…”

Section: Resultssupporting

confidence: 89%

Facile Electrodeposition of NiCo2O4 Nanosheets on Porous Carbonized Wood for Wood-Derived Asymmetric Supercapacitors

Yang

et al. 2022

Polymers

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Multichannel-porous carbon derived from wood can serve as a conductive substrate for fast charge transfer and ion diffusion, supporting the high-theory capacitance of pseudocapacitive materials. Herein, NiCo2O4 nanosheets, which are hierarchically porous, anchored on the surface of carbonized wood via electrodeposition for free-binder high-performance supercapacitor electrode materials, were proposed. Benefiting from the effectively alleviated NiCo2O4 nanosheets accumulation and sufficient active surface area for redox reaction, a N-doped wood-derived porous carbon-NiCo2O4 nanosheet hybrid material (NCNS–NCW) electrode exhibited a specific electric capacity of 1730 F g−1 at 1 A g−1 in 1 mol L−1 KOH and splendid electrochemical firmness with 80% capacitance retention after cycles. Furthermore, an all-wood-based asymmetric supercapacitor based on NCNS–NCW//NCW was assembled and a high energy density of 56.1 Wh kg−1 at a watt density of 349 W kg−1 was achieved. Due to the great electrochemical performance of NCNS–NCW, we expect it to be used as an electrode material with great promise for energy storage equipment.

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Section: Resultssupporting

confidence: 89%

Facile Electrodeposition of NiCo2O4 Nanosheets on Porous Carbonized Wood for Wood-Derived Asymmetric Supercapacitors

Yang

et al. 2022

Polymers

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“…There is no change in the shape of the CV curves for each scan rate, but a shift in the peak locations in the CV curves can be seen with the increase in scan rates. This shift can be explained by the polarization of the electrolyte at higher scan rates [13,48]. As shown in CVs in Figure 5c, there is a broad reduction peak positioned at +0.3 V, which is ascribed to the reduction of mixed metal oxides (M +4 /M +3 to M +2 and M +2 to M 0 ).…”

Section: Electrochemical Characterizationmentioning

confidence: 83%

“…but a shift in the peak locations in the CV curves can be seen with the inc rates. This shift can be explained by the polarization of the electrolyte at hig [13,48]. As shown in CVs in Figure 5c, there is a broad reduction peak posi V, which is ascribed to the reduction of mixed metal oxides (M +4 /M +3 to M +2 a In the reverse scan, there are two peaks located at +0.2 and +0.1 V, signifying mixed metal oxides (M 0 to M +2 and further M +2 to M +4 /M +3 ) [49].…”

Section: Electrochemical Performance Of All-solid-state Assc Devicementioning

confidence: 99%

Electrochemical Deposition of Multicomponent Mixed Metal Oxides on rGO/Ni Foam for All-Solid-State Asymmetric Supercapacitor Device: Mn, Co, and Ni Oxides with Ag Doping

Firat

Čolić

2022

Energies

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In this study, an asymmetric supercapacitor (ASSC) device is assembled by the deposition and annealing of silver-doped mixed metal oxides on reduced graphene oxide (rGO)/Ni foam and activated carbon (AC) on Ni foam as positive and negative electrodes, respectively. The best performing Ag:MnCoNiO active material is synthesized on rGO/Ni foam using chronopotentiometry combined with heat treatment. The XRD study clearly confirms the crystalline nature of the electrode with MnCo2O4 and MnNi2O4 phases. FT-IR and XPS studies revealed the formation of Ag:MnCoNiO/rGO on Ni foam. SEM images show a thin-film layer of fabricated material on the surface of rGO/Ni foam. The supercapacitor properties were tested in two- and three-electrode configurations, with cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) experiments in a 6 M KOH aqueous electrolyte. In the three-electrode configuration, reversible faradic reactions can be observed in a potential range of 0.0 and +0.6 V vs. Hg/HgSO4. In the two-electrode device configuration, the system exhibits a maximum energy density of 45.5 Wh kg−1 and provides a maximum power density of 4.5 kW kg−1. The results showed that the doping of Ag in a MnCoNiO electrode shows promising properties, achieved by a very simple fabrication process. The results showcase the synergistic effects achieved by mixed multiple-component metal oxides, leading to improved supercapacitive properties.

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“…In addition, with appropriate modifications, NiCo-LDH can be converted into a variety of derivatives such as NiCoO 2 , NiCoP, and NiCo 2 S 4 . For example, Lin et al 3 prepared NiCoO 2 /C by the oxidation of the NiCo-LDH/C precursor and obtained more excellent electrochemical performance. Lan et al 4 obtained a NiCoP/Ni foam via a phosphating process of a NiCo-LDH/Ni foam.…”

Section: Introductionmentioning

confidence: 99%

Crystalline phase transformation of Co-MOF derivatives on ordered mesoporous carbons for high-performance supercapacitor applications

Jing

Sun

et al. 2023

CrystEngComm

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Facile synthesis of the 3D interconnecting petal-like NiCoO2/C composite as high-performance supercapacitor electrode materials

Cited by 11 publications

References 30 publications

Facile Electrodeposition of NiCo2O4 Nanosheets on Porous Carbonized Wood for Wood-Derived Asymmetric Supercapacitors

Facile Electrodeposition of NiCo2O4 Nanosheets on Porous Carbonized Wood for Wood-Derived Asymmetric Supercapacitors

Electrochemical Deposition of Multicomponent Mixed Metal Oxides on rGO/Ni Foam for All-Solid-State Asymmetric Supercapacitor Device: Mn, Co, and Ni Oxides with Ag Doping

Crystalline phase transformation of Co-MOF derivatives on ordered mesoporous carbons for high-performance supercapacitor applications

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