Novel 2D sulfur-doped V2O5 flakes and their applications in photoelectrochemical water oxidation and high-performance energy storage supercapacitors

Jang, Won Young; Reddy, Ch. Venkata; Daouli, Ayoub; Kakarla, Raghava Reddy; Bandaru, Narendra; Shim, Jaesool; Badawi, Michaël; Aminabhavi, Tejraj M.

doi:10.1016/j.cej.2023.141935

Cited by 26 publications

(5 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in zinc ion batteries, vanadium mostly exists in a layered structure, allowing zinc ions and electrons to move between the two layers. 29,30 For VO 2 , there are many different crystal forms, such as monoclinic, rutile, tetragonal, and metastable crystals. In the positive electrode material, it will form a tunnel like structure with a sufficiently large diameter and good stability that is not easily deformed.…”

Section: Development Status Of Zinc Ion Battery Electrodesmentioning

confidence: 99%

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Cao,

2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

Zinc ion batteries (ZIBs), as an emerging low-cost and high-safety energy storge option, have the advantages of high energy and low reduction potential. With the development of high-performance cathode materials and electrolyte systems, as well as the deepening of mechanism research, the electrochemical performance of ZIBs has been greatly improved. However, the shortcomings of various materials have hindered the development of zinc ion batteries. With the deepening of research and the deepening of understanding of various materials, a brief outlook was given on the future development of electrode materials in aqueous zinc ion batteries.

show abstract

Section: Development Status Of Zinc Ion Battery Electrodesmentioning

confidence: 99%

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Cao,

2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Pseudocapacitors have higher specific capacitances due to the reversible redox reactions that are typically composed of electrode materials such as metal oxides, metal sulfides, and metal hydroxides. − Recently, 2D-layered double hydroxides (2D-LDHs) have received significant attention as electrode materials in supercapacitors because of their abundance of redox reaction sites and diverse oxidation states. The LDHs have high theoretical specific capacitance, but their electrochemical performance is still undesirable because of their poor electrical conductivity as well as poor cycle stability .…”

Section: Introductionmentioning

confidence: 99%

Heterostructured Nanocoral-like Co(OH)F@NiCo-LDH/Co₉S₈ Nanocomposites as Electrodes for Supercapacitors

He,

Li,

et al. 2024

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Co 9 S 8 have been successfully synthesized onto nickel foam via a solvothermal method. The prepared heterostructured nanocage demonstrates outstanding electrochemical properties such as excellent specific capacitance (3409 mC cm −2 at 1 mA cm −2 ) and superior capacity retention (96.38% retention after 7000 charge−discharge cycles at 10 mA cm −2 ). The asymmetrical supercapacitor fabricated by reduced graphene oxide and Co(OH)F@NiCo-LDH/Co 9 S 8 showed an excellent energy density of 37.2 W h kg −1 at a power density of 800 W kg −1 and superior capacity storage (87.63% retention after 5000 cycles of charge−discharge). This suggests that the composite has excellent performance for electrochemical supercapacitor applications. The unique combination of materials and structural design strategy employed highlight the significant advancements to develop high-performance supercapacitors, positioning this study at the cutting edge of nanomaterials research in energy applications.

show abstract

“…Furthermore, elemental doping can be useful in this regime to polarize VOx surfaces. For example, Jang and colleagues fabricated 2D sulfur (S) -doped V2O5 and observed some unique features in the optical and electrical properties of the materials [29]. Hence, it is intriguing to understand the role of S in 2D S-doped VOx/g-C3N4 van der Waals S-scheme heterojunction piezo-photocatalysts regarding the field of solar H2O2.…”

Section: Introductionmentioning

confidence: 99%

Simultaneously Utilizing Excited Holes and Electrons for Piezoelectric-Enhanced Photoproduction of H2O2 from S-Scheme 2D S-doped VOx/g-C3N4 Nanostructures

Toan,

Nguyen,

Minh

et al. 2024

Preprint

View full text Add to dashboard Cite

The simultaneous use of excited holes and electrons in photocatalytic research has become a strong driving force for rationalizing materials in design and development. As a promising strategy, step-scheme (S-scheme) photocatalysts have enormously ignited the photocatalytic community in recent decades. Introducing piezoelectric fields under light irradiations to generate valuable chemical products, such as hydrogen peroxide (H2O2), has also gained current interest in enhancing the large-scale production of these chemicals. In the research, we reported the fabrication of 2D S-doped VOx deposited on 2D g-C3N4 to produce H2O2 via the piezo-photocatalytic process. The finding pointed out that adding sulfur to VOx can help improve the catalytic outcomes by modifying the electronic and morphological properties of pristine VOx. In addition, when coupled with g-C3N4, the presence of sulfur limits the formation of graphene in the VOx/g-C3N4 composites, causing shielding effects in the materials. Besides, the research also sheds light on the charge transportation between g-C3N4 and S-VOx under irradiation and how the composites work to trigger the formation of H2O2. It turned out that the formation of H2O2 significantly relies on the reduction of oxygen to generate oxygenic radical species at g-C3N4 sites. Meanwhile, S-VOx provides oxidative sites in the composites to oxidize water molecules to generate H2O2. This study confirms the validation of S-scheme piezo-photocatalysts, thus encouraging further research on developing heterojunction materials with high catalytic efficiency, which can be used in practical conditions.

show abstract

Novel 2D sulfur-doped V2O5 flakes and their applications in photoelectrochemical water oxidation and high-performance energy storage supercapacitors

Cited by 26 publications

References 76 publications

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Heterostructured Nanocoral-like Co(OH)F@NiCo-LDH/Co₉S₈ Nanocomposites as Electrodes for Supercapacitors

Simultaneously Utilizing Excited Holes and Electrons for Piezoelectric-Enhanced Photoproduction of H2O2 from S-Scheme 2D S-doped VOx/g-C3N4 Nanostructures

Contact Info

Product

Resources

About

Novel 2D sulfur-doped V2O5 flakes and their applications in photoelectrochemical water oxidation and high-performance energy storage supercapacitors

Cited by 26 publications

References 76 publications

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Review—Development Status and Improvement Measures of Electrode Materials for Aqueous Zinc Ion Batteries

Heterostructured Nanocoral-like Co(OH)F@NiCo-LDH/Co9S8 Nanocomposites as Electrodes for Supercapacitors

Simultaneously Utilizing Excited Holes and Electrons for Piezoelectric-Enhanced Photoproduction of H2O2 from S-Scheme 2D S-doped VOx/g-C3N4 Nanostructures

Contact Info

Product

Resources

About

Heterostructured Nanocoral-like Co(OH)F@NiCo-LDH/Co₉S₈ Nanocomposites as Electrodes for Supercapacitors