Oxygen deficiency and single-crystalline MoO3−x nanobelt as advanced supercapacitor negative electrode and dye adsorbent

Bai, Yangyang; Ma, Yanting; Zheng, Shizheng; Zhang, Cuiqing; Hu, Changyuan; Liang, Baiping; Xu, Yuan; Huang, Guiping; Yang, Ruofan

doi:10.1016/j.colsurfa.2022.129064

Cited by 10 publications

(5 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To reveal the derivation of the superior electrochemical behaviours of water‐tailored Bi 2 O 3 , EIS and MS plots were obtained, as shown in Figures 4(f) and S8. It is well‐known that the EIS plot is important strategy that can reflect the electron‐transfer and ion‐diffusion status of the electrode [3b,19] . Typically, a larger linear slope is displayed for tremella‐shaped Bi 2 O 3 ‐6 in the low‐frequency region, confirming a relatively faster ion‐diffusion rate (Figure 4f).…”

Section: Resultsmentioning

confidence: 82%

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Bai

Tang

et al. 2023

Batteries & Supercaps

View full text Add to dashboard Cite

Bi2O3 is a theoretically high capacitive anode material; however, its low conductivity and deficient surface‐active sites lead to reduced practical capability compared to the theoretical one. Herein, a facile and environmentally benign strategy is developed to simultaneously tailor the morphology and create oxygen vacancies in Bi2O3 by adding trace water in a solvothermal procedure. Here trace water serves as an intermediary agent to change the growth mechanism of Bi2O3 and form a hierarchical structure with increased crystallinity. Electrochemical experiments reveal that the optimal tremella‐shaped Bi2O3 delivers a higher specific capacity, approximately reaching 65 % of the theoretical one. Such satisfactory electrochemical performance is due to the regulated tremella shape and the created oxygen vacancies, which can expose more electrochemical active‐sites and promote ion diffusion. Moreover, the massive oxygen vacancies and increased crystallinity are also beneficial for electron transfer, thus enhancing the capacity. Eventually, a Bi2O3‐6//AC asymmetric device is constructed and a superior energy density (40.8 Wh kg−1) is realized than the others Bi2O3‐based peers. This study paves a facile way for exploring advanced Bi2O3‐based alkaline battery anode materials through an environmentally benign method.

show abstract

Section: Resultsmentioning

confidence: 82%

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Bai

Tang

et al. 2023

Batteries & Supercaps

View full text Add to dashboard Cite

show abstract

“…Generally, EIS spectra have two parts (i) semicircle at high frequency region and (ii) linear part at low frequency region. In high-frequency regions, the presence of a semicircle indicates the existence of charge transfer resistance (R ct ), which is faced by the ions at the interface between the electrolyte and synthesized electrode material [55,56]. In our case, a very small semicircle is present indicating negligible R ct (0.…”

Section: Electrochemical Propertiesmentioning

confidence: 72%

“…In our case, a very small semicircle is present indicating negligible R ct (0. The cyclic stability (capacitance retention %) is a crucial parameter in investigating the electrochemical performance of synthesized α-MoO 3 /Ni-F electrode material for practical applications in portable energy storage devices [55]. The cyclic stability of α-MoO 3 /Ni-F electrode material is evaluated by performing 3000 GCD cycles at a current density of 10 A g −1 as shown in figure 6 3], clearly exhibiting the excellent electrochemical performance, high Ed, and power output of α-MoO 3 /Ni-F electrode material.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Raza,

Ali,

Ayub

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Molybdenum-based metal oxides have succeeded in incredible consideration for supercapacitor applications due to their outstanding structural, morphological and electrochemical properties. Herein, a highly porous orthorhombic MoO3 (α-MoO3) nanobenzene like nanosheets are synthesized on nickel foam (Ni-F) via a simple and cost-effective chemical vapor deposition (CVD) technique. The x-ray diffraction (XRD) analysis confirmed the synthesis of nanostructured α-MoO3 having multi oriented diffraction planes. The surface morphology (SEM) analysis indicated that the entwined nanobenzene through nano-rods/particles is beneficial for good electrical conductivity hence the high electrochemical performance of synthesized α-MoO3. The electrochemical properties of synthesized α-MoO3 electrode material like cyclic voltammetry (CV), galvanostatic charging-discharging (GCD) and electrochemical impedance spectroscopy (EIS) are analyzed using a three-electrode electrochemical workstation in 2 M KOH electrolyte solution. The synthesized α-MoO3 pseudocapacitor presented a maximum specific capacitance of 3206 F/g at a current density of 1 A/g. Moreover, α-MoO3 exhibits a cyclic stability of about 99.95% after 3000 cycles, high energy density (111 Wh/kg), power density (2500 W/kg) and negligible charge transfer resistance (0.6 ohms), indicating that it can serve as an excellent electrode material for supercapacitors. The Power law and Dunn’s model simulations also confirmed that the excellent electrochemical performance of synthesized α-MoO3 electrode material is contributed by capacitive as well as diffusion-controlled behavior.

show abstract

“…Notably, the MoO 3−x nanobelt exhibits a remarkable specific capacitance of 1,220 F g −1 at 50 A g −1 and shows an impressive capacitance retention of nearly 100% even after 38,000 cycles. Bai et al [37] synthesized α-MoO 3−x nanobelts via a facile one-pot hydrothermal approach (Figure 2h). The enlarged interlayer spacing could weaken the interlamellar Van der Waals force, facilitating the rapid diffusion of ions.…”

Section: Molybdenum Oxidesmentioning

confidence: 99%

Molybdenum-Based Electrode Materials Applied in High-Performance Supercapacitors

Wang,

2023

Batteries

View full text Add to dashboard Cite

As a novel type of green energy storage device, supercapacitors exhibit several orders of magnitude higher capacities than the traditional dielectric capacitors and significantly higher power density than the traditional secondary batteries. Supercapacitors have been widely applied in energy storage fields. Electrode materials, as pivotal components of supercapacitors, play an important role in electrochemical performance. Molybdenum-based materials have attracted widespread attention for their high theoretical capacitance, abundant resources, and facile synthesis tactics. Therefore, it is necessary to systematically summarize the application of Mo-based electrode materials in high-performance supercapacitors and unveil their developmental direction and trends. In this paper, we provide a review of binary Mo-based materials, ternary Mo-based materials, nanocomposites of Mo-based materials, and Mo-based MOFs and derivative materials. In addition, we further point out the key issues on the development of Mo-based materials in supercapacitors. This review may inspire more insightful works and enlighten other electrochemical areas concerning Mo-based materials.

show abstract

Oxygen deficiency and single-crystalline MoO3−x nanobelt as advanced supercapacitor negative electrode and dye adsorbent

Cited by 10 publications

References 50 publications

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Molybdenum-Based Electrode Materials Applied in High-Performance Supercapacitors

Contact Info

Product

Resources

About

Oxygen deficiency and single-crystalline MoO3−x nanobelt as advanced supercapacitor negative electrode and dye adsorbent

Cited by 10 publications

References 50 publications

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi2O3 Alkaline Battery‐Anode

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi2O3 Alkaline Battery‐Anode

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO3 electrode material for PES devices

Molybdenum-Based Electrode Materials Applied in High-Performance Supercapacitors

Contact Info

Product

Resources

About

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi₂O₃ Alkaline Battery‐Anode

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices