Superior electrochemical performance of dual-monoclinic δ-NaxV2O5/VO2(B) composite material with enhanced synergistic effects

Pan, Dong; Liu, Tao; Fu, JiangTao; Liu, Hong

doi:10.1016/j.jallcom.2022.166952

Cited by 10 publications

(6 citation statements)

References 58 publications

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“…The V 2p spectrum within the range of 527 to 510 eV displays the V 2p 1/2 peak of VOH at 527 eV and the V 2p 3/2 peak from 520 to 510 eV (Figure c). The fitted high-resolution XPS of V 2p presents two V 4+ peaks and two V 5+ peaks, situated at 515.45 eV (V 4+ 2p 2/3 ), 522.93 eV (V 4+ 2p 1/2 ), 516.75 eV (V 5+ 2p 2/3 ), and 524.31 eV (V 5+ 2p 1/2 ), − further confirming the mixed valence state of the vanadium oxide. Based on peak areas, the relative molar ratio of V 5+ to V 4+ in the VOH sample is 3.30:1, resulting in an average valence state of V at 4.77, which closely aligns with the theoretical average valence state of 4.80 for V 10 O 24 ·12H 2 O.…”

Section: Resultsmentioning

confidence: 63%

Phenolphthalein-Modified Multivalent Vanadium Oxide: Harnessing Oxygen Vacancies and Hydrophobicity for Improved Aqueous Zinc-Ion Battery Performance

Zhu,

Ullah,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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Vanadium-based compounds are promising candidates as cathode materials for aqueous zinc-ion batteries (ZIBs) due to their open crystal structure and high theoretical specific capacity. However, their dissolution problems in aqueous electrolytes lead to severe fast capacity decay, hindering the further development of ZIBs. Herein, a multivalent vanadium oxide (VOH@phph) with phenolphthalein coating was synthesized via a facile strategy under room temperature. The natural hydrophobicity of the coated phenolphthalein reduces direct interaction between the material and water molecules, restraining vanadium dissolution and effectively enhancing the cyclic stability of the material. Moreover, the introduction of phenolphthalein results in increased oxygen vacancies, thereby significantly shortening the diffusion path of Zn 2+ ions and consequently improving the rate performance of VOH@phph. Notably, at a current density of 2 A g −1 , the battery featuring VOH@phph as the cathode demonstrates a specific capacity of 294.37 mAh g −1 and maintains a retention rate of 96.82% after 1000 cycles.

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Section: Resultsmentioning

confidence: 63%

Phenolphthalein-Modified Multivalent Vanadium Oxide: Harnessing Oxygen Vacancies and Hydrophobicity for Improved Aqueous Zinc-Ion Battery Performance

Zhu,

Ullah,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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“…Moreover, new heights appear at 12.4 and 36.11 during discharge, which can be attributed to the Zn x (OH) 2 V 2 O 7 Á2H 2 O species. 24,42 It seems that introducing zinc ions triggers a new phase, while their removal causes it to disappear. This implies that zinc storage relies on a co-intercalation/de-intercalation process of the Zn 2+ and proton (H + ).…”

Section: Papermentioning

confidence: 99%

Synergistic carbon and oxygen vacancy engineering on vanadium dioxide nanobelts for efficient aqueous zinc-ion batteries

Gu,

Wang,

et al. 2023

Mater. Adv.

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“…The excellent electrochemical performance is attributed to the formation of vacancies, struc-tural defects and V─O─N bonds after most of the NH 3 molecules escape from the 𝛽-Na 0.33 V 2 O 5 skeleton. The composite prepared by combining the double monoclinic 𝛿-Na x V 2 O 5 with VO 2 (B) by Pan et al [39] Also shows superior electrochemical performance due to its special synergistic effect. The evolution of the crystal structure was also analyzed by ex situ XRD (Figure 6j).…”

Section: Na + Intercalationmentioning

confidence: 99%

“…The composite prepared by combining the double monoclinic δ‐Na x V 2 O 5 with VO 2 (B) by Pan et al. [ 39 ] Also shows superior electrochemical performance due to its special synergistic effect. The evolution of the crystal structure was also analyzed by ex situ XRD (Figure 6j).…”

Section: Overview Of Ion‐intercalated Vanadium Oxide Cathode Material...mentioning

confidence: 99%

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Advances and Perspectives of Ion‐Intercalated Vanadium Oxide Cathodes for High‐Performance Aqueous Zinc Ion Battery

Bai,

Qin,

Hao

et al. 2023

Adv Funct Materials

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Rechargeable aqueous zinc‐ion batteries (AZIBs) are recognized as one of the most competitive next generation energy storage systems due to the high theoretical capacity (820 mAh g−1), abundant reserves, low expense, and environmental friendliness. However, in comparison to that monovalent ion secondary battery, the multivalent ion rechargeable battery faces larger metal ion sizes and higher charge/discharge number in the electrochemical reaction process, thereby suffering from larger steric resistance and the electrostatic repulsion in the intercalation–deintercalation process. At present, a great deal of research has shown that the guest ion pre‐embedded host structured cathodes can effectively alleviate the above problems and improve the comprehensive performance of aqueous zinc ion battery. In this review, the development of vanadium oxide ion‐intercalated cathode materials in AZIBs is reviewed, mainly including MXV2O5∙nH2O, MXV3O8∙nH2O, MXV6O13∙nH2O, MXV6O16∙nH2O, and MXV10O25∙nH2O type materials. The reaction mechanisms and electrochemical performance of these materials are described, and the future research directions are prospected. It is expected to provide fundamental and engineering guidance for the development of high performance AZIBs cathode materials.

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Superior electrochemical performance of dual-monoclinic δ-NaxV2O5/VO2(B) composite material with enhanced synergistic effects

Cited by 10 publications

References 58 publications

Phenolphthalein-Modified Multivalent Vanadium Oxide: Harnessing Oxygen Vacancies and Hydrophobicity for Improved Aqueous Zinc-Ion Battery Performance

Phenolphthalein-Modified Multivalent Vanadium Oxide: Harnessing Oxygen Vacancies and Hydrophobicity for Improved Aqueous Zinc-Ion Battery Performance

Synergistic carbon and oxygen vacancy engineering on vanadium dioxide nanobelts for efficient aqueous zinc-ion batteries

Advances and Perspectives of Ion‐Intercalated Vanadium Oxide Cathodes for High‐Performance Aqueous Zinc Ion Battery

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