Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries

Tang, Boya; Fang, Guozhao; Zhou, Jiang; Wang, Liangbing; Lei, Yongpeng; Wang, Chao; Lin, Tianquan; Tang, Yan

doi:10.1016/j.nanoen.2018.07.014

Cited by 459 publications

(296 citation statements)

References 72 publications

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“…On the basis of this pioneering work, studies have been extended to hydrated compounds such as V 2 O 5 ⋅ n H 2 O, V 3 O 7 ⋅ H 2 O, V 10 O 24 ⋅ 12 H 2 O, Mg x V 2 O 5 ⋅ n H 2 O, K 2 V 6 O 16 ⋅ 2.7 H 2 O, Ca 0.25 V 2 O 5 ⋅ n H 2 O, Na 2 V 6 O 16 ⋅ 3 H 2 O, and Fe 5 V 15 O 39 (OH) ⋅ 9.9 H 2 O . Anhydrous phases such as VO 2 , Zn 2 V 2 O 7 , NH 4 V 4 O 10 , potassium vanadates, and LiV 3 O 8 have also been investigated.…”

Section: Introductionmentioning

confidence: 99%

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Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

et al. 2020

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Low‐cost, easily processable, and environmentally friendly rechargeable aqueous zinc batteries have great potential for large‐scale energy storage, which justifies their receiving extensive attention in recent years. An original concept based on the use of a binary Li+/Zn2+ aqueous electrolyte is described herein for the case of the Zn/V2O5 system. In this hybrid, the positive side involves mainly the Li+ insertion/deinsertion reaction of V2O5, whereas the negative electrode operates according to zinc dissolution–deposition cycles. The Zn//3 mol L−1 Li2SO4–4 mol L−1 ZnSO4///V2O5 cell worked in the narrow voltage range of 1.6–0.8 V with capacities of approximately 136–125 mA h g−1 at rates of C/20–C/5, respectively. At 1 C, the capacity of 80 mA h g−1 was outstandingly stable for more than 300 cycles with a capacity retention of 100 %. A detailed structural study by XRD and Raman spectroscopy allowed the peculiar response of the V2O5 layered host lattice on discharge–charge and cycling to be unraveled. Strong similarities with the well‐known structural changes reported in nonaqueous lithiated electrolytes were highlighted, although the emergence of the usual distorted δ‐LiV2O5 phase was not detected on discharge to 0.8 V. The pristine host structure was restored and maintained during cycling with mitigated structural changes leading to high capacity retention. The present electrochemical and structural findings reveal a reaction mechanism mainly based on Li+ intercalation, but co‐intercalation of a few Zn2+ ions between the oxide layers cannot be completely dismissed. The presence of zinc cations between the oxide layers is thought to relieve the structural stress induced in V2O5 under operation, and this resulted in a limited volume expansion of 4 %. This fundamental investigation of a reaction mechanism operating in an environmentally friendly aqueous medium has not been reported before.

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Section: Introductionmentioning

confidence: 99%

“…[3,10,11] [18] and Fe 5 V 15 O 39 (OH)·9.9 H 2 O. [19] Anhydrous phases such as VO 2 , [20] Zn 2 V 2 O 7 , [21] NH 4 V 4 O 10 , [22] potassium vanadates, [23] and LiV 3 O 8 [24] have also been investigated. Surprisingly,t he pristine conventional V 2 O 5 oxide has received less attentiont han its derivatives.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

et al. 2020

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“…where n represents the charge-transfer number, S represents the contact area between the electrode and electrolyte, and C Zn 2þ represents the concentration of Zn 2 + in the Na 2 V 6 O 16 · 3H 2 O. Based on the slope values in Figure 5b, the Zn 2 + ion diffusion coefficient is calculated to be around 10 À 9 cm 2 s À 1 for peak � 1 and � 2 , which is much higher than that of many previously reported ZIB electrodes (e. g.,~10 À 12 cm 2 s À 1 for MnVO, [15]~1 0 À 11 cm 2 s À 1 for ZnMn 2 O 4 , [16]~1 0 À 11 -10 À 10 cm 2 s À 1 for Fe 5 V 15 O 39 (OH) 9 · 9H 2 O, [17]~1 0 À 11 -10 À 10 cm 2 s À 1 for K 2 V 8 O 21 , [18] 10 À 11 -10 À 10 cm 2 s À 1 for K 0.25 V 2 O 5 , [18] etc.). It is clear that the Na 2 V 6 O 16 · 3H 2 O evinces a faster Zn 2 + ion diffusion rate, which has mainly benefited from its long axial length but low thickness as well as the open lattice framework that facilitate more efficient of Zn 2 + ion transport in both the axial direction and crystal structure.…”

mentioning

confidence: 99%

Free‐Standing Hydrated Sodium Vanadate Papers for High‐Stability Zinc‐Ion Batteries

Tan

Chen

Liu

et al. 2019

Batteries & Supercaps

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Making batteries more sustainable and affordable is seen as fundamental for enabling the electric grid to depend on power generated from renewable sources. In this context, zinc‐ion batteries (ZIBs) are seen as promising candidates to suit the niche application stemming from the appealing properties of Zn, but their advancement is plagued by a limited choice of cathode and a better understanding of structure‐property relationships that underpin the electrochemistry. Here, we demonstrate a hydrothermal method to prepare Na2V6O16 ⋅ 3H2O nanobelts with high degree of homogeneity and preferred orientation, enabling the construction of free‐standing paper electrode for ZIBs. By virtue of the favorable structural features of the Na2V6O16 ⋅ 3H2O nanobelts that arise from the pillaring effect of interlayer metal ions/structural water and nanoscale morphology, the electrode displays good cycling performance (281 and 142 mAh g−1 is achieved at 2.0 and 5.0 A g−1 after 5000 cycles, respectively) with nearly 100 % Coulombic efficiency and impressive rate capability (216 and 167 mAh g−1 are achieved at 3.0 and 5.0 A g−1 respectively). Mechanistic study on the intercalation reaction of the Na2V6O16 ⋅ 3H2O nanobelts using ex situ XRD and HRTEM reveals their good structural and electrochemical reversibility, which enlightens the material advantages as promising cathode for ZIBs.

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“…It is of grave importance to find suitable cathode materials for Zn storage. At present, only a few materials are used as cathode electrodes for zinc-ion batteries: (1) Manganese-based materials, [4,[39][40][41][42] (2) Vanadium-based materials, [43][44][45][46][47] (3) Prussian blue analogs-based materials, [48] (4) Organic electrodes, [49,50] (5) Other Cathode Materials. [51,52] MnO 2 , as a representative energy storage material, has been widely concerned due to the structural tunability and Zn 2 + storage in ZIBs.…”

Section: Introductionmentioning

confidence: 99%

One‐Dimensional MnO₂ Nanowires Space‐Confined in Hollow Mesoporous Carbon Nanotubes for Enhanced Zn²⁺ Storage Performance

Liu

Hao

et al. 2020

ChemElectroChem

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The yolk‐shell structure exhibits fascinating and important properties for energy storage devices. The carbon shell significantly improves the good electrical conductivity and the stable micro‐/nanostructures of the active material increases utilization. MnO2@C with a yolk‐shell structure shows high reversibility, good rate performance, and excellent cycling stability for aqueous Zn‐ion batteries. The Zn‐ion battery with MnO2@C could realize a high reversible capacity of 239 mAh g−1 at 0.1 A g−1. In particular, at a quite high current density of 2 A g−1, it achieves capacity of 91 mAh g−1. The Zn‐ion battery has excellent capacity retention of up to 1000 cycles at 1 A g−1. The yolk‐shell structure plays an important role in improving the battery performance.

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Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries

Cited by 459 publications

References 72 publications

Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

Free‐Standing Hydrated Sodium Vanadate Papers for High‐Stability Zinc‐Ion Batteries

One‐Dimensional MnO₂ Nanowires Space‐Confined in Hollow Mesoporous Carbon Nanotubes for Enhanced Zn²⁺ Storage Performance

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Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries

Cited by 459 publications

References 72 publications

Mechanistic Investigation of a Hybrid Zn/V2O5 Rechargeable Battery with a Binary Li+/Zn2+ Aqueous Electrolyte

Mechanistic Investigation of a Hybrid Zn/V2O5 Rechargeable Battery with a Binary Li+/Zn2+ Aqueous Electrolyte

Free‐Standing Hydrated Sodium Vanadate Papers for High‐Stability Zinc‐Ion Batteries

One‐Dimensional MnO2 Nanowires Space‐Confined in Hollow Mesoporous Carbon Nanotubes for Enhanced Zn2+ Storage Performance

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Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

Mechanistic Investigation of a Hybrid Zn/V₂O₅ Rechargeable Battery with a Binary Li⁺/Zn²⁺ Aqueous Electrolyte

One‐Dimensional MnO₂ Nanowires Space‐Confined in Hollow Mesoporous Carbon Nanotubes for Enhanced Zn²⁺ Storage Performance