MoO 2 @Cu@C Composites Prepared by Using Polyoxometalates@Metal-Organic Frameworks as Template for All-Solid-State Flexible Supercapacitor

Zhang, Yidong; Lin, Baoping; Sun, Ying; Han, Pengcheng; Wang, Junchuan; Ding, Xin; Zhang, Xueqin; Yang, Hong

doi:10.1016/j.electacta.2015.12.037

Cited by 108 publications

(32 citation statements)

References 53 publications

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“…Table S3 (Supporting Information) lists the main performances of MOF‐based all‐solid‐state supercapacitors reported in the literature. The comparison indicates that our all‐solid‐state devices based on the use of the high‐activity GQDs are comparable or superior to reported MOF‐based all‐solid‐state devices in terms of the energy density, for example, polyoxometalates@MOFs (7.9 Wh kg −1 ), GO/Mo‐MOFs (14 Wh kg −1 ), ZIF‐67/PPy (11.3 µWh cm −2 ), and MoO 2 @Cu@C by using polyoxometalates@ MOF template (2.6 Wh kg −1 ) …”

Section: Resultssupporting

confidence: 55%

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

Liu

Wang

et al. 2018

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Flexible supercapacitors have shown enormous potential for portable electronic devices. Herein, hierarchical 3D all-carbon electrode materials are prepared by assembling N-doped graphene quantum dots (N-GQDs) on carbonized MOF materials (cZIF-8) interweaved with carbon nanotubes (CNTs) for flexible all-solid-state supercapacitors. In this ternary electrode, cZIF-8 provides a large accessible surface area, CNTs act as the electrical conductive network, and N-GQDs serve as highly pseudocapactive materials. Due to the synergistic effect and hierarchical assembly of these components, N-GQD@cZIF-8/CNT electrodes exhibit a high specific capacitance of 540 F g at 0.5 A g in a 1 m H SO electrolyte and excellent cycle stability with 90.9% capacity retention over 8000 cycles. The assembled supercapacitor possesses an energy density of 18.75 Wh kg with a power density of 108.7 W kg . Meanwhile, three supercapacitors connected in series can power light-emitting diodes for 20 min. All-solid-state N-GQD@cZIF-8/CNT flexible supercapacitor exhibits an energy density of 14 Wh kg with a power density of 89.3 W kg , while the capacitance retention after 5000 cycles reaches 82%. This work provides an effective way to construct novel electrode materials with high energy storage density as well as good cycling performance and power density for high-performance energy storage devices via the rational design.

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Section: Resultssupporting

confidence: 55%

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

Liu

Wang

et al. 2018

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116

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“…6 These characteristics have directed CP-MNPs composites to various applications in organic light emission diode (OLED), photovoltaics (PV), and electrochromic devices (ECD). 7,8 Many textures have been used for CPs, including: polyaniline (PAni), polyacetylene (PA), polythiophene (PTh), polypyrrole (PPy), polyphenylenevinylene (PPV), polyN-vinylcarbazole (PNVC), polyuorene, polyindole, and their substituted derivatives. These compounds have extended inspiring applications of CPs to rechargeable batteries, microelectronics, sensors and electrochromic displays.…”

Section: Introductionmentioning

confidence: 99%

One-pot facile simultaneous in situ synthesis of conductive Ag–polyaniline composites using Keggin and Preyssler-type phosphotungstates

et al. 2019

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“…TheC V plots of MoO 2 //graphite and MoO 3 //graphite ASCs at different sweep rates are shown in Figure S12 aa nd bi nt he Supporting Information, respectively.T he GCD curves of ASCs measureda t different applied currents (0.5t o3mA) ares howni nF igure 6c and d. Theareal capacitance retention plot withappliedcurrent is alsop resented in Figure S12 (Figure 6e)a nd comparedw ithd ifferent analogous systems. [19,36,60] The MoO 3 // graphite ASC has an energy densityo f1 16.7 mW hm À2 at a power densityo f5 000mWm À2 and am aximump ower density of 27 150 mW m À2 witha ne nergy densityo f5 7.32mWhm À2 . For the MoO 2 //graphite ASC, it has av eryh igh energy density (341mWhm À2 at 4949 mW m À2 power density) comparedw ith thoseo fMoO 3 //graphite and othera nalogous systems reported in the literature.…”

Section: Supercapacitore Fficacymentioning

confidence: 99%

Quantum‐Dot‐Mediated Controlled Synthesis of Dual Oxides of Molybdenum from MoS₂: Quantification of Supercapacitor Efficacy

Mandal

Routh²,

Nandi

2018

Chemistry An Asian Journal

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The versatile technological applications of molybdenum oxides requires the efficient synthesis of various stoichiometric molybdenum oxides. Thus, herein, a controlled method to synthesize both MoO and MoO from MoS via quantum dot intermediates is reported. Microscopic, spectroscopic, and X-ray studies corroborate the formation of orthorhombic α-MoO with a microbelt structure and monoclinic MoO nanoparticles that self-assemble into hollow tubes. Quantitative investigations into charge-storage kinetics reveal that MoO exhibits an excellent pseudocapacitive response up to a mass loading of 5 mg cm with an areal capacity of 327.2 mC cm at 5 mV s , with 41.9 % retention at 100 mV s . In contrast, above a mass loading of 0.5 mg cm , the charge-storage nature of MoO electrodes switches from that of a supercapacitor to battery type. At a sweep rate of 50 mV s , 87.2 % of the total charge is contributed by a capacitive response in a 1 mg cm MoO electrode. The charge-storage kinetics of MoO and MoO reflect on the respective asymmetric supercapacitors. A MoO //graphite asymmetric supercapacitor holds an outstanding energy density of 341 mW h m at a power density of 4949 mW m and delivers an ultrahigh power density of 28140 mW m with an energy density 142 mW h m and energy efficiency of 87 %.

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MoO 2 @Cu@C Composites Prepared by Using Polyoxometalates@Metal-Organic Frameworks as Template for All-Solid-State Flexible Supercapacitor

Cited by 108 publications

References 53 publications

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

One-pot facile simultaneous in situ synthesis of conductive Ag–polyaniline composites using Keggin and Preyssler-type phosphotungstates

Quantum‐Dot‐Mediated Controlled Synthesis of Dual Oxides of Molybdenum from MoS₂: Quantification of Supercapacitor Efficacy

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MoO 2 @Cu@C Composites Prepared by Using Polyoxometalates@Metal-Organic Frameworks as Template for All-Solid-State Flexible Supercapacitor

Cited by 108 publications

References 53 publications

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

Hierarchical 3D All‐Carbon Composite Structure Modified with N‐Doped Graphene Quantum Dots for High‐Performance Flexible Supercapacitors

One-pot facile simultaneous in situ synthesis of conductive Ag–polyaniline composites using Keggin and Preyssler-type phosphotungstates

Quantum‐Dot‐Mediated Controlled Synthesis of Dual Oxides of Molybdenum from MoS2: Quantification of Supercapacitor Efficacy

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Quantum‐Dot‐Mediated Controlled Synthesis of Dual Oxides of Molybdenum from MoS₂: Quantification of Supercapacitor Efficacy