Localized Ostwald Ripening Guided Dissolution/Regrowth to Ancient Chinese Coin‐shaped VO<sub>2</sub> Nanoplates with Enhanced Mass Transfer for Zinc Ion Storage

Cao, Ziyi; Wang, Lipeng; Zhang, Hong; Zhang, Xiang; Liao, Jiangwen; Dong, Juncai; Shi, Jiangyue; Zhuang, Peiyuan; Cao, Yudong; Ye, Mingxin; Shen, Jianfeng; Ajayan, Pulickel M.

doi:10.1002/adfm.202000472

Cited by 88 publications

(52 citation statements)

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“…The redox peaks observed in the CV curves of both electrodes are indistinguishable from the cathodic and anodic peaks described for many vanadium electrode materials. [ 24,51–54 ] The cycling performance of both cathodes at 0.2 C is displayed in Figure 3b,c, which shows that the PEDOT@YVO cathode system manifests extremely reversible (de)intercalation and a lower polarization reflecting the CVs results. YVO cathode achieves an initial discharge specific capacity of 125.5 mAh g −1 .…”

Section: Resultsmentioning

confidence: 97%

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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: 97%

“…[ 35,70–72 ] Thus, Table S2 (Supporting Information) illustrates the comparison of long‐term cycling performance of this our composite electrodes (PEDOT@YVO) after 4000 cycles with other conducting polymer template and the state‐of‐the‐art V‐based cathodes in AZIBs. [ 54,66,73–77 ]…”

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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“…As shown in Figure 16c, benefiting from the ultrasmall nanostructure, such Mn 3 O 4 nanodots present a higher specific capacity and better rate capability compared with other Mn 3 O 4 samples reported previously. Unlike that, Cao et al [258] reported an Ancient Chinese Coin-shaped VO 2 nanoplates prepared based on the localized Ostwald ripening guided dissolution-regrowth method (Figure 16d,e). They also demonstrated that the mass transfer can be greatly enhanced on the surface of cathode, owing to the abundant ion accessibility and transfer pathways benefiting from the structural merits.…”

Section: D Materialsmentioning

confidence: 93%

“…Unlike that, Cao et al. [ 258 ] reported an Ancient Chinese Coin‐shaped VO 2 nanoplates prepared based on the localized Ostwald ripening guided dissolution‐regrowth method (Figure 16d,e). They also demonstrated that the mass transfer can be greatly enhanced on the surface of cathode, owing to the abundant ion accessibility and transfer pathways benefiting from the structural merits.…”

Section: Structural Engineering For Cathode Materialsmentioning

confidence: 96%

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Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Yong

Wang

et al. 2020

Advanced Energy Materials

243

144

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have also greatly aroused the positive exploration of alternative LIB technologies in recent years. [44] In contrast to the flammable organic electrolyte in LIBs, the aqueous one exhibits lower cost, higher safety, and especially the superior ionic conductivity, which is generally two orders of magnitude higher than that of the organic system. [9,10] All those unparalleled advantages would make the aqueous battery technologies to be the promising candidates in the future. [11] Rechargeable aqueous zinc-ion batteries (AZIBs), which is mainly composed of zinc metal anode, zinc salt-based aqueous electrolyte, and Zn 2+ host cathode, hold the great promise for energy storage applications in very recent years. [12,13] Compared with nonaqueous alkali-ion batteries, the use of cheap and high ambient stable zinc metal anode and inexpensive aqueous electrolyte with superior ionic conductivity (Figure 1a) would make such type of battery to be one of the most promising commercial candidates in the future market. [14-17] To date, extensive studies have been reported for AZIBs, and relating publications have dramatically increased especially in these two years, as shown in Figure 1b. However, the insufficient energy density seems to become the bottleneck that hinder their practical applications at current status. [4,5,18] Such issue could be ascribed to the narrow operating voltage of aqueous electrolyte, insufficient electrochemical performance of cathode materials, and Zn anode. [13,19,20] Besides, the influence of other components such as separator and collector also should be considered to some extent. [20,21] Among them, the studies of widening operating voltage of electrolyte and the optimization of other components only received less attention, which still remain at the early stage. [22,23] On the contrary, more attentions were paid to the electrochemical performance tuning of electrode materials. [24-26] Besides, considering the fixed operating voltage of Zn metal anode, the modification of cathode materials seems to provide more possibilities to effectively improve the energy density of AZIBs, owing to their rich material systems. [20,26,27] Under these considerations, the rational design of advanced cathodes is expected to be a preferential task to develop. Up to now, many types of materials have been exploited as cathode candidates and applied for AZIBs, however, those Rechargeable aqueous zinc-ion batteries (AZIBs) have attracted extensive attention and are considered to be promising energy storage devices, owing to their low cost, eco-friendliness, and high security. However, insufficient energy density has become the bottleneck for practical applications, which is greatly influenced by their cathodes and makes the exploration of high-performance cathodes still a great challenge. This review underscores the recent advances in the rational design of advanced cathodes for AZIBs. The review starts with a brief summary and evaluation of cathode material systems, as well as the introduction of proposed storage mechani...

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Oxygen Defects Engineering of VO₂·xH₂O Nanosheets via In Situ Polypyrrole Polymerization for Efficient Aqueous Zinc Ion Storage

Zhang

Wang

et al. 2021

Adv Funct Materials

180

115

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What has been a crucial demand is that designing mighty cathode materials for aqueous zinc−ion batteries (AZIBs), which are vigorous alternative devices for large−scale energy storage by means of their high safety and low cost. Herein, a facile strategy is designed that combines oxygen defect engineering with polymer coating in a synergistic action. As an example, the oxygen−deficient hydrate vanadium dioxide with polypyrrole coating (Od−HVO@PPy) is synthesized via a one‐step hydrothermal method in which introducing oxygen vacancy in HVO is simultaneously realized during the in situ polymerization. Such a desirable material adjusts the surface adsorption and internal diffusion of Zn2+ demonstrated by electrochemical characterization and theoretical calculation results. Moreover, it also utilizes conductive polymer coating to improve electrical conductivity and suppress cathode dissolution. Therefore, the Od−HVO@PPy electrode delivers a preferable reversible capacity (337 mAh g−1 at 0.2 A g−1) with an impressive energy density of 228 Wh kg−1 and stable long cycle life. This enlightened design opens up a new modus operandi toward superior cathode materials for advanced AZIBs.

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Localized Ostwald Ripening Guided Dissolution/Regrowth to Ancient Chinese Coin‐shaped VO₂ Nanoplates with Enhanced Mass Transfer for Zinc Ion Storage

Cited by 88 publications

References 50 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

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Oxygen Defects Engineering of VO₂·xH₂O Nanosheets via In Situ Polypyrrole Polymerization for Efficient Aqueous Zinc Ion Storage

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Localized Ostwald Ripening Guided Dissolution/Regrowth to Ancient Chinese Coin‐shaped VO2 Nanoplates with Enhanced Mass Transfer for Zinc Ion Storage

Cited by 88 publications

References 50 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

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Oxygen Defects Engineering of VO2·xH2O Nanosheets via In Situ Polypyrrole Polymerization for Efficient Aqueous Zinc Ion Storage

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Localized Ostwald Ripening Guided Dissolution/Regrowth to Ancient Chinese Coin‐shaped VO₂ Nanoplates with Enhanced Mass Transfer for Zinc Ion Storage

Oxygen Defects Engineering of VO₂·xH₂O Nanosheets via In Situ Polypyrrole Polymerization for Efficient Aqueous Zinc Ion Storage