Dispersed and size-selected WO3 nanoparticles in carbon aerogel for supercapacitor applications

Li, Xudong; Sheng, Guangmin; Zhong, Minlin; Zhou, Xiuwen

doi:10.1016/j.matdes.2017.12.038

Cited by 38 publications

(16 citation statements)

References 49 publications

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“…In the studies on supercapacitors, WO 3 has been shown to suffer from low electrical conductivity because of the presence of oxides (Liu et al, 2018). Partial reduction of WO 3−x enhanced the electrical conductivity because of multiple oxidation states (W +5 and W +6 ).…”

Section: Supercapacitorsmentioning

confidence: 99%

“…Photothermal conversion is a process in which light energy of a specific wavelength is absorbed and is converted directly into heat. Through light-to-heat conversion, the heat generated can be applied to many fields such as photothermal therapy (Wang et al, 2017a), water evaporation (Wang, 2018), photocatalysis (Wang et al, 2017c), electrochromic devices (Liao et al, 2007), NIR shielding (Li et al, 2016b), and energy-related applications (Liu et al, 2018). PTMs have been used for photothermal ablation (PTA) therapy for the past few decades.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

et al. 2019

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Among several active photothermal nanomaterials, tungsten-oxide-based materials have received considerable attention recently because of their ability to absorb near-infrared (NIR) light and their efficient light-to-heat conversion properties. In addition, tungsten-oxide-based materials have an unusual oxygen defect structure and strong local surface plasma resonance (LSPR), which offers strong photoabsorption in a broad wavelength range of the NIR region. In the past, several light-absorbing nanomaterials such as noble metals, polymeric materials, and other inorganic nanomaterials were of interest for their use in photothermal therapy for cancer treatment. In this study, we review the synthesis, properties, and applications of tungsten-oxide-based nanomaterials as a new type of photothermal material. The basic ideas behind photothermal nanomaterial development as well as the factors that influence their structural designs are also discussed in this study. In addition, recent progress in various fields such as NIR light-shielding, pyroelectric, water evaporation, photocatalysis, gas sensors, and energy-related applications for WO 3−x-and M x WO 3-based nanomaterials (including their hybrids) are highlighted. Finally, this review presents promising insights into this rapidly growing field that may inspire additional research leading to practical applications.

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Section: Supercapacitorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

et al. 2019

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“…The operating voltage windows of galvanostatic charge-discharge (GCD) curves was −0.3 ∼ −1V (vs. Ag/AgCl) for ultrathin and hierarchical NbS 2 electrodes, and −0.35 ∼ −1V (vs. Ag/AgCl) for stacked NbS 2 electrodes because its discharge process was sluggish as the potential came near to −0.3 V (vs. Ag/AgCl) at the current density of 1 A g −1 (Figure 5C). The GCD curves of the ultrathin and hierarchical NbS 2 electrodes performed a good symmetric triangular shape at 1 A g −1 , suggesting its rapid and reversible charge-discharge ability (Liu et al, 2018a;Li et al, 2019), while the stacked NbS 2 electrode FIGURE 5 | Electrochemical performance of ultrathin, hierarchical and stacked NbS 2 nanosheets toward supercapacitor using a three-electrode electrolytic cell in neutral 1 M KCl aqueous solution. (A) CV curves at 10 mV s −1 .…”

Section: Electrochemical Performance Of Nbs 2 Nanosheetsmentioning

confidence: 99%

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Wei

Dong

et al. 2020

Front. Chem.

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Layered NbS 2 , a member of group-V transition metal dichalcogenides, was synthesized via a colloidal synthesis method and employed as a negative material for a supercapacitor. The morphologies of NbS 2 can be tuned from ultrathin nanosheets to hierarchical structures through dynamics controls based on growth mechanisms. Electrochemical energy storage measurements present that the ultrathin NbS 2 electrode exhibits the highest rate capability due to having the largest electrochemical surface area and its efficient ion diffusion. Meanwhile, the hierarchical NbS 2 shows the highest specific capacitance at low current densities for small charge transfer resistance, displays 221.4 F g −1 at 1 A g −1 and 117.1 F g −1 at 10 A g −1 , and cycling stability with 78.9% of the initial specific capacitance after 10,000 cycles. The aggregate or stacking of nanosheets can be suppressed effectively by constructing hierarchical structure NbS 2 nanosheets.

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“…According to the Equation (1), the energy density (E) is related to the capacitance (C) and operating voltage (V). For increasing the energy stored in SCs, previous works have been widely focused on the improvement of capacitance which takes advantage of various topical subjects like the selection, the construction, and the modification of electrode materials (Zhong et al, 2015 ; Dai et al, 2017 ; Liu et al, 2018a ). So far, few researches focus on the crucial factors correlating to the operating voltage, even though it is more efficient to increase the energy density and power density (P), according to the Equation (2) (where R is the internal resistance) by expanding the operating voltage, since energy density and power density are directly proportional to the square of voltage.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-Doped Multi-Scale Porous Carbon for High Voltage Aqueous Supercapacitors

Liu

Yuan

et al. 2018

Front. Chem.

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Recently, “Water-in-salt” electrolyte has been reported to extend the working voltage of aqueous supercapacitor. However, this electrolyte needs the electrode materials possess some good features such as proper pore structure, high electron and ion conductivity. Herein, we fabricated the nitrogen-doped multi-scale porous carbon (NMC) by the simple enriching melamine-resorcinol-formaldehyde xerogels method with integrating triblock copolymer for micro-pores formation. All the results confirmed that our NMC is provided with a very high specific surface area (3,170 m2 g−1) and its monoliths are composed of multi-scale porous structure. By employing the nanostructured NMC as electrode materials, we have investigated the capability for high-voltage aqueous supercapacitor applications. The superconcentrated “Water-in-salt” electrolyte expand stability operating potential window of aqueous symmetric supercapacitor up to 2.4 V with a high energy density of 33 Wh kg−1 at power density of 0.3 kW kg−1. Our studies indicate that the NMC is potential materials for high performance over wider voltage range.

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Dispersed and size-selected WO3 nanoparticles in carbon aerogel for supercapacitor applications

Cited by 38 publications

References 49 publications

Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Nitrogen-Doped Multi-Scale Porous Carbon for High Voltage Aqueous Supercapacitors

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