Revealing the impacts of oxygen defects on Zn2+ storage performance in V2O5

Cao, Jin; Zhang, Dongdong; Yue, Yilei; Pakornchote, Teerachote; Bovornratanaraks, Thiti; Sawangphruk, Montree; Zhang, Xinyu; Qin, Jiaqian

doi:10.1016/j.mtener.2021.100824

Cited by 41 publications

(45 citation statements)

References 86 publications

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“…Obviously, the Fermi level of NHMO shifts toward the conduction band, and its bandgap is reduced, which facilitates the charge transfer and motivates the reaction kinetics. [ 37 ]…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

Sun

Zheng

Nian

et al. 2022

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Manganese oxides are highly desirable for the cathode of rechargeable aqueous zinc ion batteries (AZIBs) owing to their low cost and high abundance. However, the terrible structure stability of manganese oxide limits its practical application. Here, it is demonstrated that the hydrogen‐bond shielding effect can improve the electrochemical performance of manganese oxide. Briefly, (NH4)0.125MnO2 (NHMO) is prepared by introducing NH4+ into the tunnel structure of α‐MnO2. The robust hydrogen bonds between N‐H and host O atoms can stabilize the lattice structure of α‐MnO2 and suppress the dissolution of Mn element. More importantly, it can also accelerate ions mobility kinetics by weakening the electrostatic interaction of host O atoms. Thus, the fabricated Zn||NHMO battery possesses impressive cycling life (99.5% of capacity retention over 10 000 cycles) and rate capability (109 mA h g–1 of discharge capacity at 6000 mA g–1). Comprehensive analyses reveal the essences of interfacial charge and bulk ions transfer. This finding opens new opportunities for the development of high‐performance AZIBs.

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“…Obviously, the Fermi level of NHMO shifts toward the conduction band, and its bandgap is reduced, which facilitates the charge transfer and motivates the reaction kinetics. [ 37 ]…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

Sun

Zheng

Nian

et al. 2022

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“…V 2 O 5-x @CCSMs was slightly higher (1.16 S m À 1 ). Moreover, according to the literature, [28] the calculated density of state (DOS) results exhibit that V 2 O 5-x has a stronger density of state near the Fermi level as compared to that of the pristine V 2 O 5 . These results suggest V 2 O 5 with oxygen vacancies has good metallic behavior and high electronic conductivity, which expectably facilitates the electron-transfer capability.…”

Section: Chemelectrochemmentioning

confidence: 70%

MIL‐47(V) Derived V₂O₅@Carbon Core‐Shell Microcuboids with Oxygen Vacancies as Advanced Conversion Cathodes for High‐Performance Zinc‐Ion Batteries

Luo

Zhang

et al. 2022

ChemElectroChem

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Vanadium pentoxide (V2O5) has been considered one of the most promising cathodes for zinc‐ion batteries (ZIBs) due to its outstanding theoretical capacity (589 mAh g−1). However, it remains great challenge to achieve the high capacity, limited to the poor electronic conductivity and sluggish ionic diffusion kinetics of V2O5. Herein, a controllable strategy is proposed to synthesize V2O5@carbon core‐shell microcuboids with oxygen vacancies (V2O5‐x@CCSMs) derived from MIL‐47(V) used for cathodes of ZIBs. The obtained V2O5‐x@CCSMs cathode delivers high capacities of 485.4 and 392.1 mAh g−1 at 0.1 and 2.0 A g−1, respectively. The superior electrochemical performances originate from the nano‐sized particles of V2O5, oxygen vacancies and carbon shell. Further, ex‐situ XRD indicates V2O5 undergoes a shrinking core model conversion reaction at initial cycling to a new phase of Zn3V2O7(OH)2 ⋅ 2H2O, which is an ideal host for Zn2+. Our work offers an innovative strategy to develop high‐capacity cathode in ZIBs.

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“…[64,65] The extraordinary electrochemical properties of the whole structure stem from the free insertion and detachment of Zn 2 + . Nonetheless, the low electrical conductivity of V 2 O 5 hindered its large-scale development, so enhancing the electronic conductivity is crucial (common modification methods such as the incorporation of La 3 + ions, [66] construction of oxygen defects, [67] etc. The specific methods of improvement will be thoroughly described later).…”

Section: Omentioning

confidence: 99%

Recent Developments and Challenges of Vanadium Oxides (V_xO_y) Cathodes for Aqueous Zinc‐Ion Batteries

Zhou

Han

Xie

et al. 2021

The Chemical Record

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The rapid depletion of lithium resources and the increasing demand for electrical energy storage have stimulated the pursuit of emerging electrochemical energy storage. Aqueous zinc ion batteries (ZIBs) are highly sought after for their low cost, high safety, and increased environmental compatibility. However, the search for suitable cathode materials is still tricky for a wide range of researchers. Vanadium oxides (V x O y ), with their abundant vanadium valence, easily deformable VÀ O polyhedrons, and tunable chemical compositions, are of significant advantage in developing emerging materials. This work provides a detailed review of different V x O y for the application in aqueous ZIBs. The current problems and optimization strategies of V x O y cathode materials are systematically discussed. Finally, the current challenges and possible directions for future research of V x O y cathode materials in aqueous ZIBs are presented.

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Revealing the impacts of oxygen defects on Zn2+ storage performance in V2O5

Cited by 41 publications

References 86 publications

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

MIL‐47(V) Derived V₂O₅@Carbon Core‐Shell Microcuboids with Oxygen Vacancies as Advanced Conversion Cathodes for High‐Performance Zinc‐Ion Batteries

Recent Developments and Challenges of Vanadium Oxides (V_xO_y) Cathodes for Aqueous Zinc‐Ion Batteries

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Revealing the impacts of oxygen defects on Zn2+ storage performance in V2O5

Cited by 41 publications

References 86 publications

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

Hydrogen Bond Shielding Effect for High‐Performance Aqueous Zinc Ion Batteries

MIL‐47(V) Derived V2O5@Carbon Core‐Shell Microcuboids with Oxygen Vacancies as Advanced Conversion Cathodes for High‐Performance Zinc‐Ion Batteries

Recent Developments and Challenges of Vanadium Oxides (VxOy) Cathodes for Aqueous Zinc‐Ion Batteries

Contact Info

Product

Resources

About

MIL‐47(V) Derived V₂O₅@Carbon Core‐Shell Microcuboids with Oxygen Vacancies as Advanced Conversion Cathodes for High‐Performance Zinc‐Ion Batteries

Recent Developments and Challenges of Vanadium Oxides (V_xO_y) Cathodes for Aqueous Zinc‐Ion Batteries