Recent advances of transition metal oxides and chalcogenides in pseudo-capacitors and hybrid capacitors: A review of structures, synthetic strategies, and mechanism studies

Xi, Zhu

doi:10.1016/j.est.2022.104148

Cited by 68 publications

(36 citation statements)

References 385 publications

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“…Frontiers in Energy Research frontiersin.org et al, 2008;Luo et al, 2017;Ma et al, 2019;Zhu 2022). In this electroadsorption reaction: M + A − # MA (1−δ) + δ e − , A − anions on the electrode surface and the quantity of transferred δ e − are intensively relevant to the so-called "electroadsorption valence."…”

Section: Pseudocapacitorsmentioning

confidence: 99%

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Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

Liu

Chen

2022

Front. Energy Res.

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The rapid development of modern electronic technology is in urgent need of further breakthroughs to actualize high-energy, high-power, and long cycling energy storage equipment. Carbon-based supercapacitors (CSs) are potential high-power devices that can stock electrical energy at the electrode–electrolyte interface rather than by diffusing ions inside electrodes. However, the commercial CSs using active carbon (AC) suffer from restricted energy densities on account of relatively small specific surface area, poor porosity, and low electrochemical activity. In recent years, various tactics have been applied to enhance the electrochemical properties of carbon-based electrode, and fruitful successes have been achieved. This mini review first introduces the concerned charge storage mechanisms of CSs, which is followed by a straightforward summary of the pivotal factors affecting the electrochemical performance. Then, the novel fabrication strategies of porous carbon at different dimensions are exemplified and summarized to prepare large-capacitance electrodes. The current challenges and promising future research for exploiting the state-of-the-art supercapacitors are also discussed.

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Section: Pseudocapacitorsmentioning

confidence: 99%

“…FIGURE 3Energy storage mechanism demonstration and typical compounds: (A) pseudocapacitive-type materials and (B) battery-type materials(Zhu 2022).…”

mentioning

confidence: 99%

Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

Liu

Chen

2022

Front. Energy Res.

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“…With the aggravation of environmental pollution and the energy shortage problem, the development of new energy storage technology is an urgent need of society. , Supercapacitors have attracted widespread concern as an electrochemical device for storing energy because of its noticeable power density, fast charging and discharging ability, prolonged cycling capability and environmental friendliness. , Generally, supercapacitors store and release energies through two distinct mechanisms, namely, electric double-layer capacitors and faradaic pseudocapacitors. − The pseudocapacitor has a superior energy density in comparison with the double-layer capacitor based on the electrochemical reactions that occur on the surface of electrode materials. − …”

Section: Introductionmentioning

confidence: 99%

One-Step Hydrothermal Synthesis of MoO₂/MoS₂ Nanocomposites as High-Performance Electrode Material for Supercapacitors

Deng

Zhao

Peng

et al. 2022

ACS Appl. Mater. Interfaces

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By only changing the ratio of Mo to S source, a distinctive single phase MoO 2 or MoS 2 and MoO 2 /MoS 2 nanocomposites (NCs) are obtained through a simple one-step hydrothermal method based on CH 4 N 2 S as a sulfur source and (NH 4 ) 6 Mo 7 O 24 •4H 2 O as a source of Mo in oxalic acid. The effect of ratio of Mo to S source on the composition, structure, and electrochemical performance are systematically researched. Due to its unique design, abundant macropores active sites in MoO 2 / MoS 2 NCs induce superior rate property (55.30% capacitance retention to 20 from 1 A g −1 ) and larger specific capacitance (1667.3 F g −1 at 1 A g −1 ) and longer cycle life (94.75% after 5000 cycles) as used directly as an electrode. Furthermore, at a power density of 225 W kg −1 , a maximal energy density of 21.85 Wh kg −1 is provided by the asymmetric supercapacitor (MoO 2 /MoS 2 //AC). The capacitance of asymmetric supercapacitor (ASC) is remarkably enhanced by 129.02% under 5000 cycles at a current density of 1.5 A g −1 , demonstrating outstanding cycle property. These results imply the prepared MoO 2 /MoS 2 NCs have promising applications in advanced energy storages. It is important and should be noted that NCs of oxide and sulfide are prepared with only a simple one-step process.

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“…[9][10][11] Considering various electrode materials into account, especially, transition metal oxides (TMOs) have been greatly accepted as favourable candidate for SCs owing to their relatively cost-effective, high-theoretical capacitance, and excellent electrochemical properties. [12][13][14][15] Besides, TMOs involve Faradic redox kinetics rather than the pure electrostatic charge storage behaviour, which thus not only dramatically mounts the capacitance but also the energy density of the SCs. [16][17][18][19] In particular, the binary cobalt molybdate (CoMoO 4 ) has received tremendous attention in recent years as a perspective batterytype electrode material because of its many impressive advantages, including fast and reversible redox kinetics, high capacity, multivalence distributions, and non-toxicity.…”

Section: Introductionmentioning

confidence: 99%

“…Considering various electrode materials into account, especially, transition metal oxides (TMOs) have been greatly accepted as favourable candidate for SCs owing to their relatively cost‐effective, high‐theoretical capacitance, and excellent electrochemical properties 12‐15 . Besides, TMOs involve Faradic redox kinetics rather than the pure electrostatic charge storage behaviour, which thus not only dramatically mounts the capacitance but also the energy density of the SCs 16‐19 .…”

Section: Introductionmentioning

confidence: 99%

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Sivakumar

Raj

Kulandaivel

et al. 2022

Intl J of Energy Research

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The rational strategy to design the well-ordered morphology of the metal oxides with defective engineering and tailoring them into specific electrode fabrication can significantly improve their electrochemical properties for high-performance energy storage systems. Herein, we adopted an effective strategy to introduce oxygen-defect into the well-ordered three-dimensional flower-like CoMoO 4 nanoarchitecture. The Co-Mo precursor leads to the introduction of oxygendefects into the CoMoO 4 (rCMO) nanoarchitecture during the heat-treatment under an oxygen-controlled environment (argon). The oxygen-defects in the material could facilitate abundant electroactive sites and intrinsically enhance the conductivity and supercapacitor performance. The oxygen-defect CoMoO 4 (rCMO) exhibits a specific capacity of 531 mAh g À1 at a current density of 1 A g À1 compared to the pristine CoMoO 4 (CMO; ambient atmosphere) of 322 mAh g À1 under the same current density. Meanwhile, the fabricated hybrid supercapacitor (HSC) of rCMO//AC provides a maximum specific capacitance of 159 F g À1 . Further, it distributes an energy density of 49.87 Wh kg À1 at the power density of 845.45 W kg À1 with an excellent cyclic life of ~91.03% over 10 000 cycles.

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Recent advances of transition metal oxides and chalcogenides in pseudo-capacitors and hybrid capacitors: A review of structures, synthetic strategies, and mechanism studies

Cited by 68 publications

References 385 publications

Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

One-Step Hydrothermal Synthesis of MoO₂/MoS₂ Nanocomposites as High-Performance Electrode Material for Supercapacitors

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

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Recent advances of transition metal oxides and chalcogenides in pseudo-capacitors and hybrid capacitors: A review of structures, synthetic strategies, and mechanism studies

Cited by 68 publications

References 385 publications

Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

Applications and challenges of porous carbon with different dimensions in supercapacitors—a mini review

One-Step Hydrothermal Synthesis of MoO2/MoS2 Nanocomposites as High-Performance Electrode Material for Supercapacitors

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO 4 nanoarchitecture for supercapacitor applications

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One-Step Hydrothermal Synthesis of MoO₂/MoS₂ Nanocomposites as High-Performance Electrode Material for Supercapacitors

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications