Oxygen defect enriched (NH4)2V10O25·8H2O nanosheets for superior aqueous zinc‐ion batteries

Cao, Jin; Zhang, Dongdong; Yue, Yilei; Wang, Xiao; Pakornchote, Teerachote; Bovornratanaraks, Thiti; Zhang, Xinyu; Wu, Zhong‐Shuai; Qin, Jiaqian

doi:10.1016/j.nanoen.2021.105876

Cited by 211 publications

(142 citation statements)

References 55 publications

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“…[ 43,44 ] The variable oxidation states V 4+ /V 5+ in vanadium oxides materials are beneficial agents for reducing the stress that accompanies insertion/removal of Zn 2+ ions leading to long‐life performance of cathode. [ 45,46 ] Besides, the introduction of oxygen vacancy induces lattice strains and removes the electrostatics of the material, thereby increasing the charge transfer kinetics and structural stability of the electrode materials. [ 47,48 ]…”

Section: Resultsmentioning

confidence: 99%

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Kumankuma-Sarpong

Guo

2021

Small Methods

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The development of metal ion‐intercalated active materials for excellent electrochemical performance in rechargeable aqueous zinc‐ion batteries (AZIBs) is challenging. The structure instability and intrinsic electrostatic repulsion of the lattice framework cause structural breakdown and low‐rate performance. In response to these problems, yttrium vanadium oxide–poly(3,4‐ethylenedioxythiophene) (PEDOT@YVO) composite is reported as stable cathode material for AZIBs. The introduction of PEDOT in YVO nanorods improves the crystalline structure with an enlarged interplanar lattice spacing of 3.4 Å. The PEDOT@YVO composite electrode demonstrates effective electric conductivity and a higher initial specific capacity of 308.5 mAh g−1 than that (125.5 mAh g−1) of the pure YVO at 0.2 C rate. It also features a long‐term stable discharge–charge cycle performance of 4000 cycles with a capacity retention of 79.2% at 1C rate, better than YVO (29.4 mAh g−1). The oxygen vacancies and improved electrical conductivity of the composite account for the invigorated electrochemical performance. Consequently, this work reveals another avenue for constructing unique electrodes to enhance the electrochemical properties of AZIBs.

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Section: Resultsmentioning

confidence: 99%

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Kumankuma-Sarpong

Guo

2021

Small Methods

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“…[4][5][6][7] To date, tremendous researches have been made to seek high-performance cathodes and have achieved significant progress. Especially, manganese-based materials and the layered vanadium-based materials (such as V 2 CT x ) can store massive Zn 2+ by virtue of inherent merits in structure and multivalence, [8][9][10][11] but utilizing Zn metal anode in reality face severely challenging and difficulty.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Ultrahigh Energy Density and Stable Dendrite‐Free Flexible Anode with Ti₃C₂T_x MXene Nanosheets and Hydrated Ammonium Vanadate Nanobelts for Aqueous Rocking‐Chair Zinc Ion Batteries

Wang

Jiang

et al. 2021

Adv Funct Materials

101

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Exploiting Zn metal-free anode materials would be an effective strategy to resolve the problems of Zn metal dendrites that severely hinder the development of Zn ion batteries (ZIBs). However, the study of Zn metalfree anode materials is still in their infancy, and more importantly, the low energy density severely limits their practical implementations. Herein, a novel (NH 4 ) 2 V 10 O 25 • 8H 2 O@Ti 3 C 2 T x (NHVO@Ti 3 C 2 T x ) film anode is proposed and investigated for constructing "rocking-chair" ZIBs. The NHVO@Ti 3 C 2 T x electrode shows a capacity of 514.7 mAh g −1 and presents low potential which is 0.59 V (vs Zn 2+ /Zn) at 0.1 A g −1 . The introduction of Ti 3 C 2 T x not only affords an interconnected conductive network, but also stabilizes the NHVO nanobelts structure for a long cycle life (84.2% retention at 5.0 A g −1 over 6000 cycles). As a proof-of-concept, a zinc metal-free full battery is successfully demonstrated, which delivers the highest capacity of 131.7 mAh g −1 (mass containing anodic and cathodic) and energy density of 97.1 Wh kg −1 compared to all reported aqueous "rocking-chair" ZIBs. Furthermore, a long cycling span of 6000 cycles is obtained with capacity retention reaching up to 92.1%, which is impressive. This work is expected to provide new moment toward V-based materials for "rocking-chair" ZIBs.

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“…The new peak at 534.6 eV may be related to the adsorbed water on the surface of the electrode (Figure 8e). [37] Furthermore, a new peak appears at ≈532.4 eV, which is attributed to residual inserted water during the 1st discharge process. [41] Accordingly, the percentage of O-defect is decreased to 19.8% because the oxygen vacancy is captured by O 2− from water after the pristine electrode was discharged and charged in aqueous electrolyte solution.…”

Section: Ex Situ Xrd Sem Eds Elemental Mappings and Xps Characterization For The Mnv 2 O 4 (P)/c-700 Cathodementioning

confidence: 98%

“…The selected area electron diffraction (SAED) pattern of the MnV 2 O 4 particles shows welldefined polycrystalline diffraction rings or spots with d-spacing values of 0.49, 0.30, 0.26, 0.21, 0.17, 0.16, and 0.15 nm, which reflect the (111), ( 220), ( 311), ( 400), ( 422 5b), further proving the existence of oxygen defects in MnV 2 O 4 (p)/C-700. [36,37] Figure 5c shows the Mn 2p spectrum of MnV 2 O 4 (p)/C-700, in which two strong peaks at 640.7 and 652.6 eV along with satellite peak at 645.7 eV were observed, corresponding to the spin-orbit peaks of Mn 2p 3/2 and Mn 2p 1/2 of MnV 2 O 4 , respectively, indicating that the Mn element in the sample is in +2 valence. The V 2p fine spectrum of MnV 2 O 4 (p)/C-700 is shown in Figure 5d, which presents the strong V 3+ signal (2p 3/2 : 516.4 eV; 2p 1/2 : 523.6 eV) accompanying with a weak V 2+ signal (2p 3/2 : 514.5 eV; 2p 1/2 : 522.3 eV), and the molar ratio of V 3+ /V 2+ is ≈1.6.…”

Section: Microstructure Of Mnv 2 O 4 (P)/c-700mentioning

confidence: 99%

MOF‐Derived MnV₂O₄/C Microparticles with Graphene Coating Anchored on Graphite Sheets: Oxygen Defect Engaged High Performance Aqueous Zinc‐Ion Battery

Leng

Cui

Liu

et al. 2021

Adv Materials Inter

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By annealing [Mn(phen)H2O][V2O6] (phen = 1,10‐phenanthroline) in the presence of graphite template, MnV2O4 /C microparticles are obtained, in which MnV2O4 particles with one‐layer or few‐layer coating of graphene are anchored on the graphite sheets. The optimal sample, MnV2O4(p)/C‐700 with a high carbon content (35.3 at. %) can deliver a large specific capacity of 410 mAh g−1 at 0.1 A g−1 with a high capacity retention of 94.3% over 1000 discharge/charge cycles at 20 A g−1 as cathode in zinc‐ion battery. Ex situ X‐ray diffraction, scanning electron microscopy, energy‐dispersive X‐ray spectra, as well as elemental mappings and X‐ray photoelectron spectroscopy of MnV2O4(p)/C‐700 discern the partial phase transformation mechanism of MnV2O4→Zn3(OH)2V2O7(H2O)2 during discharge/charge process. It is because the rich oxygen defects of MnV2O4 can improve electrical conductivity, favor the electron transfer from V→Mn/O, thus facilitate the binding of Zn2+, and the captured Zn2+ cannot be extracted, as evidenced by density functional theory calculations. Furthermore, it is found that O‐deficiency can capture the water shell from the hydrated Zn2+, then the dehydrated Zn2+ is easy to insert into MnV2O4 with lower migration barrier of Zn2+ (0.84 eV), leading to the structural reversibility of MnV2O4 in cycling test.

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Oxygen defect enriched (NH4)2V10O25·8H2O nanosheets for superior aqueous zinc‐ion batteries

Cited by 211 publications

References 55 publications

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Tailoring Ultrahigh Energy Density and Stable Dendrite‐Free Flexible Anode with Ti₃C₂T_x MXene Nanosheets and Hydrated Ammonium Vanadate Nanobelts for Aqueous Rocking‐Chair Zinc Ion Batteries

MOF‐Derived MnV₂O₄/C Microparticles with Graphene Coating Anchored on Graphite Sheets: Oxygen Defect Engaged High Performance Aqueous Zinc‐Ion Battery

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Oxygen defect enriched (NH4)2V10O25·8H2O nanosheets for superior aqueous zinc‐ion batteries

Cited by 211 publications

References 55 publications

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Yttrium Vanadium Oxide–Poly(3,4‐ethylenedioxythiophene) Composite Cathode Material for Aqueous Zinc‐Ion Batteries

Tailoring Ultrahigh Energy Density and Stable Dendrite‐Free Flexible Anode with Ti3C2Tx MXene Nanosheets and Hydrated Ammonium Vanadate Nanobelts for Aqueous Rocking‐Chair Zinc Ion Batteries

MOF‐Derived MnV2O4/C Microparticles with Graphene Coating Anchored on Graphite Sheets: Oxygen Defect Engaged High Performance Aqueous Zinc‐Ion Battery

Contact Info

Product

Resources

About

Tailoring Ultrahigh Energy Density and Stable Dendrite‐Free Flexible Anode with Ti₃C₂T_x MXene Nanosheets and Hydrated Ammonium Vanadate Nanobelts for Aqueous Rocking‐Chair Zinc Ion Batteries

MOF‐Derived MnV₂O₄/C Microparticles with Graphene Coating Anchored on Graphite Sheets: Oxygen Defect Engaged High Performance Aqueous Zinc‐Ion Battery