A super hybrid supercapacitor with high energy density based on the construction of CoMoO4/MoO2 decorated 3D sulfur-doped graphene and porous lotus leaves carbon

Liu, Hong; Zhang, Mingmei; Song, Zixiang; Ma, Tianjiao; Huang, Zhiye; Wang, An; Shao, Shouyan

doi:10.1016/j.jallcom.2021.160660

Cited by 15 publications

(7 citation statements)

References 56 publications

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“…04‐0850), the other diffraction peak at 26.51° can be ascribed to (002) plane of the monoclinic CoMoO 4 phase (JCPDS No. 21‐0868) [28] . After curing, the typical diffraction peak of the (004) plane of the monoclinic CoMo 2 S 4 phase (JCPDS card No.…”

Section: Resultsmentioning

confidence: 99%

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Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

Zhang

Guo

et al. 2022

ChemPlusChem

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The construction of hierarchical nanostructures and the synergistic effect of bimetal compounds provide effective strategies to address the low energy density of supercapacitors. Herein, CoMo2S4 (CMS) nanosheets anchored on homogeneous nanorods vertically distributed on nickel foam (NF) were fabricated using a two‐step hydrothermal method. The hierarchical homostructure CMS materials heavily depend on the vulcanization parameter of the second step synthesis. As an electrode of supercapacitors, CoMo2S4 exhibits a large specific capacity of 1992.85 F g−1 at 2 mA cm−2, and specific capacity retention of 106 % through 8000 cycles when sulfurization condition was at 120 °C for 6 h (CMS/NF‐120). Such excellent performances benefit from hierarchical homostructure, which can provide a large reaction surface area, fast ion/electron diffusion channels and rich active sites. Furthermore, the asymmetric pseudocapacitors device constructed with CMS/NF‐120 and active carbon exhibits a maximum energy density of 39.8 Wh kg−1, and good long‐term stability (80.1 % capacitance retention after 10,000 cycles).

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Section: Resultsmentioning

confidence: 99%

“…21-0868). [28] After curing, the typical diffraction peak of the (004) plane of the monoclinic CoMo 2 S 4 phase (JCPDS card No. 24-0332) can be clearly indexed at 31.26°.…”

Section: Chempluschemmentioning

confidence: 99%

Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

Zhang

Guo

et al. 2022

ChemPlusChem

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“…35,36 The peaks in the 280 to 298 eV binding energy range confirm C 1s elemental peak for the MCNSG composite. Figure 6D shows the deconvoluted C1s spectrum 17 The C S bonds formed can provide active sites useful to improve supercapacitor performance. 37 Figure 6E shows the deconvoluted O1s spectrum includes three peaks due to the various oxygen species in the formed composites.…”

Section: Structure and Compositionmentioning

confidence: 99%

“…35 The peaks at 529.85, 530.88, and 532.54 eV indicate metal-oxygen, OH, and C═O bonds, respectively. 17 Figure 6F shows deconvoluted S 2p spectra including three main peaks at 168, 169.2, and 170 eV corresponding with S 2p 3/2 and S 2p 1/2 energy positions for C-S-C and C-SOx-C spin-orbit couplings. 30,38 Figure 6G shows N 1s peaks between 390 and 410 eV are characteristic weak signals signifying C-N-C peaks for graphitic-N in NSG.…”

Section: Structure and Compositionmentioning

confidence: 99%

“…Therefore, this heterogeneous material combines pseudocapacitance and EDLC behaviors to produce a hybrid supercapacitor. 17 Doping GO heteroatoms improves the hybrid material optical and electrical performance and increases catalytic performance due to providing more active sites. 18 Therefore, we co-doped GO with N and S heteroatoms using a single chemical reagent source for both N and S. 19,20 Nitrogen is a popular dopant for GO due to almost equal atomic radii and extranuclear electrons for the carbon, and N doping can change GO from n-to p-type semiconductor depending upon bonding details.…”

Section: Introductionmentioning

confidence: 99%

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MnO ₂ / Co ₃ O ₄ with N and S co‐doped graphene oxide bimetallic nanocomposite for hybrid supercapacitor and photosensor applications

Kathalingam

Ramesh

Santhoshkumar

et al. 2021

Intl J of Energy Research

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This report presents the synthesis of MnO 2 /Co 3 O 4 with N and S co-doped graphene oxide (GO) hybrid composite by hydrothermal route for supercapacitor and photosensor applications. MnO 2 /Co 3 O 4 nanoflakes and nanoparticles were directly grown on dual N and S doped GO sheets, where doping was achieved using a single reagent thiourea in one-pot synthesis. Individual Co 3 O 4 and MnO 2 electrodes have poor reversibility and cycling properties due to electrolytic instability and low electrical conductivities. However, the hybrid provides good catalytic properties, and combined with highly conducting two-dimensional GO it can reduce mismatching properties due to high conductivity and layered structure. The incorporated composite sheet-like structure provides good mechanical strength with high conductivity, permitting easy ion penetration into the electrode, and providing considerably more active surfaces. Thus, the proposed hybrid material delivers significantly improved performance for supercapacitor and/or photosensor applications, achieving 614 F.g À1 specific capacitance at 1 Ag À1 , and exceeding 95% retention up to 10 000 cycles. This composite material also shows good photosensing with 1 order of increased current under visible light. K E Y W O R D Scobalt oxide, manganese oxide, MnO 2 /Co 3 O 4 @N and S co-doped GO, nitrogen and sulfur co-doping, photosensor, supercapacitor

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The Progress and Comprehensive Analysis of Supercapacitors for Alternating Current Line Filtering: A Review

Zhang

Cui

et al. 2023

Batteries & Supercaps

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To address the potential application of supercapacitors (SCs) in the field of alternating current filtering, this review summarizes the working mechanism toward ultrafast response, the progress of SCs in electrode materials, electrolytes (aqueous, organic electrolyte, and ionic liquids), current collectors, as well as device configuration. The performance of SCs is compared comprehensively with that of the commercial aluminum electrolyte capacitor (AEC) from the viewpoint of operating temperature, voltage, response time, impedance phase angle, and capacitance. Especially, there exists a big gap between AECs and SCs in terms of the operating temperature and operating voltage. And we give insights into future research focus for high‐frequency SCs, in terms of mechanism, structural design, and application management.

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A super hybrid supercapacitor with high energy density based on the construction of CoMoO4/MoO2 decorated 3D sulfur-doped graphene and porous lotus leaves carbon

Cited by 15 publications

References 56 publications

Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

MnO ₂ / Co ₃ O ₄ with N and S co‐doped graphene oxide bimetallic nanocomposite for hybrid supercapacitor and photosensor applications

The Progress and Comprehensive Analysis of Supercapacitors for Alternating Current Line Filtering: A Review

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A super hybrid supercapacitor with high energy density based on the construction of CoMoO4/MoO2 decorated 3D sulfur-doped graphene and porous lotus leaves carbon

Cited by 15 publications

References 56 publications

Construction of CoMo2S4 Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

Construction of CoMo2S4 Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

MnO 2 / Co 3 O 4 with N and S co‐doped graphene oxide bimetallic nanocomposite for hybrid supercapacitor and photosensor applications

The Progress and Comprehensive Analysis of Supercapacitors for Alternating Current Line Filtering: A Review

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Product

Resources

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Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

Construction of CoMo₂S₄ Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

MnO ₂ / Co ₃ O ₄ with N and S co‐doped graphene oxide bimetallic nanocomposite for hybrid supercapacitor and photosensor applications