Design Strategy of High Stability Vertically Aligned RGO@V<sub>2</sub>O<sub>5</sub> Heterostructure Cathodes for Flexible Quasi-Solid-State Aqueous Zinc-Ion Batteries

Zhong, Xiaoqiu; Kong, Zhenzhen; Liu, Qifan; Yang, Chao; Chen, Yan; Qiu, Jianhui; Zang, Limin

doi:10.1021/acsami.3c12161

Cited by 7 publications

(4 citation statements)

References 46 publications

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“…The maximum theoretical capacities of Zn and Ca intercalated V 2 N MXene are calculated to be 976.4 and 770.8 mA h/g, respectively. Our findings reveal that the Zn/Ca-ion storage capacities of V 2 N MXene surpass those of the other MXene-based structures reported in literature. − ,,,,,− This implies that V 2 N MXene performs better than other electrode materials for ZIBs/CIBs.…”

Section: Resultsmentioning

confidence: 52%

“…However, the capacity of vanadium oxides to store Zn 2+ ions in the specified vanadium oxide cathodes is significantly restricted by their intrinsic electrochemical constraints. These include the dissolution of vanadium in acidic or neutral electrolytes, resulting in the degradation of electrode structure, contamination of electrolytes, and corrosion of the zinc anode . Similar to vanadium oxide, the charging/discharging rate and longevity of manganese oxide are also restricted due to its solubility in aqueous solutions .…”

Section: Introductionmentioning

confidence: 99%

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High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

Saharan,

Ghanekar,

Shivankar

et al. 2024

J. Phys. Chem. C

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In this study, the electrochemical energy storage properties of V 2 N MXene as an electrode material for multivalent zinc (Zn 2+ ) and calcium (Ca 2+ ) ion rechargeable batteries have been studied using first-principles computations. Various properties like band structure, adsorption energy, diffusion kinetics, and open-circuit voltage are investigated using density functional theory. V 2 N MXene demonstrates metallic properties with a high structural stability and low diffusion barriers. Remarkably, Zn (976.4 mA h/g) and Ca (770.8 mA h/g)-adsorbed V 2 N MXene layers exhibit better storage capacity than the reported ones (517 mA h/g for zinc-intercalated CC@MnO 2 @Ti 3 C 2 T X and 598.63 mA h/g for calcium-intercalated V 3 C 2 /graphene). These findings make V 2 N MXene a highly promising cathode material for zinc and an anode material for calcium-ion batteries.

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Section: Resultsmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

Saharan,

Ghanekar,

Shivankar

et al. 2024

J. Phys. Chem. C

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“…The peak area of the CV curves for Zn||V 2 O 5 cells in the NMI-CDOTS/ZnSO 4 electrolyte is significantly enhanced compared to that in the pure ZnSO 4 electrolyte, suggesting an improvement in the capacity of Zn||V 2 O 5 full cells. Meanwhile, the anodic peaks split into two peaks, indicating the occurrence of vanadium multistep oxidation Figure b displays the galvanostatic charge/discharge curves of Zn||V 2 O 5 full cells in ZnSO 4 and NMI-CDOTS/ZnSO 4 electrolytes in the voltage range of 0.2–1.6 V at a current density of 1 mA cm –2 .…”

Section: Results and Discussionmentioning

confidence: 99%

Multifunctionalized Supramolecular Cyclodextrin Additives Boosting the Durability of Aqueous Zinc-Ion Batteries

Zhang,

Luo,

Sun

et al. 2024

ACS Appl. Mater. Interfaces

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The poor cycling stability of aqueous zinc-ion batteries hinders their application in large-scale energy storage due to uncontrollable dendrite growth and harmful hydrogen evolution reactions. Here, we designed and synthesized an electrolyte additive, N-methylimidazolium-β-cyclodextrin p-toluenesulfonate (NMI-CDOTS). The cations of NMI-CD + are more easily adsorbed on the abrupt Zn surface to regulate the deposition of Zn 2+ and reduce dendrite generation under the combined action of the unique cavity structure with abundant hydroxyl groups and the electrostatic force. Meanwhile, p-toluenesulfonate (OTS − ) is able to change the Zn 2+ solvation structure and suppress the hydrogen evolution reaction by the strong interaction of Zn 2+ and OTS − . Benefiting from the synergistic role of NMI-CD + and OTS − , the Zn||Zn symmetric cell exhibits superior cycling performance as high as 3800 h under 1 mA cm −2 and 1 mA h cm −2 . The Zn||V 2 O 5 full battery also shows a high specific capacity (198.3 mA h g −1 ) under 2.0 A g −1 even after 1500 cycles, and its Coulomb efficiency is nearly 100% during the charging and discharging procedure. These multifunctional composite strategies open up possibilities for the commercial application of aqueous zinc-ion batteries.

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“…Lithium-ion batteries have consistently held the dominating position in the commercial rechargeable device market. − However, certain inherent issues, such as the high cost and flammability of the organic electrolytes, have limited further application in massive-scale energy storage. − Due to the relatively high ionic conductivity and safety of aqueous electrolytes, as well as the high energy density achieved through the multielectron redox process, multivalent ions, e.g., Zn 2+ , Al 3+ , Mg 2+ , etc., are considered attractive choices in aqueous rechargeable batteries. − Among them, the Zn electrode stands out due to its high theoretical capacity of up to 820 mAh g –1 , low electrochemical potential of −0.763 V (versus the standard hydrogen electrode), high abundance, and small radius of the corresponding hydrated ions, making aqueous zinc-ion batteries (AZIBs) a popular research topic. − …”

Section: Introductionmentioning

confidence: 99%

Vanadium Oxide Cathode Coinserted by Ni²⁺ and NH₄⁺ for High-Performance Aqueous Zinc-Ion Batteries

Shen,

Li,

Dong

et al. 2024

ACS Appl. Mater. Interfaces

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Vanadium-based oxides have garnered significant attention as cathode materials for aqueous zinc-ion batteries (AZIBs) because of their high theoretical capacity and low cost. However, the limited reaction kinetics and poor long-term cycle stability hinder their widespread application. In this paper, we propose a novel approach by coinserting Ni 2+ and NH 4 + ions into V 2 O 5 •3H 2 O, i.e., NNVO. Structural characterization shows that the coinsertion of Ni 2+ and NH 4+ not only extends the interlayer spacing of V 2 O 5 •3H 2 O but also significantly promotes the transport kinetics of Zn 2+ because of the synergistic "pillar" effect of Ni 2+ and NH 4 + , as well as the increased oxygen vacancies that effectively lower the energy barrier for Zn 2+ insertion. As a result, the AZIBs with an NNVO electrode exhibit a high capacity of 398.1 mAh g −1 (at 1.0 A g −1 ) and good cycle stability with 89.1% capacity retention even after 2000 cycles at 5.0 A g −1 . At the same time, a highly competitive energy density of 262.9 Wh kg −1 is delivered at 382.9 W kg −1 . Considering the simple scheme and the resultant high performance, this study may provide a positive attempt to develop high-performance AZIBs.

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Design Strategy of High Stability Vertically Aligned RGO@V₂O₅ Heterostructure Cathodes for Flexible Quasi-Solid-State Aqueous Zinc-Ion Batteries

Cited by 7 publications

References 46 publications

High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

Multifunctionalized Supramolecular Cyclodextrin Additives Boosting the Durability of Aqueous Zinc-Ion Batteries

Vanadium Oxide Cathode Coinserted by Ni²⁺ and NH₄⁺ for High-Performance Aqueous Zinc-Ion Batteries

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Design Strategy of High Stability Vertically Aligned RGO@V2O5 Heterostructure Cathodes for Flexible Quasi-Solid-State Aqueous Zinc-Ion Batteries

Cited by 7 publications

References 46 publications

High-Capacity V2N MXene for Multivalent Ion Batteries: An Ab Initio Study

High-Capacity V2N MXene for Multivalent Ion Batteries: An Ab Initio Study

Multifunctionalized Supramolecular Cyclodextrin Additives Boosting the Durability of Aqueous Zinc-Ion Batteries

Vanadium Oxide Cathode Coinserted by Ni2+ and NH4+ for High-Performance Aqueous Zinc-Ion Batteries

Contact Info

Product

Resources

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Design Strategy of High Stability Vertically Aligned RGO@V₂O₅ Heterostructure Cathodes for Flexible Quasi-Solid-State Aqueous Zinc-Ion Batteries

High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

High-Capacity V₂N MXene for Multivalent Ion Batteries: An Ab Initio Study

Vanadium Oxide Cathode Coinserted by Ni²⁺ and NH₄⁺ for High-Performance Aqueous Zinc-Ion Batteries