Aromatic organic molecular crystal with enhanced π–π stacking interaction for ultrafast Zn-ion storage

Zhang, Haozhe; Fang, Yuanbin; Yang, Fan; Liu, Xiaoqing; Lu, Xihong

doi:10.1039/d0ee01723j

Cited by 215 publications

(132 citation statements)

References 45 publications

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“…Meanwhile, these results also have obvious competitiveness among other reported ZIBs (Figure 5e). [ 4,13,43,49–54 ] Remarkably, electrode materials with high areal capacity are highly required for miniaturized electronics. [ 55,56 ] However, the sluggish kinetics of active materials in thick electrodes greatly hinder their practical applications.…”

Section: Resultsmentioning

confidence: 99%

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Dong

et al. 2020

Adv Funct Materials

180

146

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Zinc‐ion batteries (ZIBs) have been regarded as one of the most promising aqueous energy storage devices due to their low‐cost, high capacity, and intrinsic safety. However, the relatively low Coulombic efficiency caused by the dendrite formation and side reactions greatly hinders the rejuvenation of ZIBs. Here, an utterly simple approach by pencil drawing is employed to improve the poor performance of normal Zn anode and hinders the formation of passivated byproduct as well as serious dendrite growth. Significantly, the functional graphite layer can not only act as ions buffer, but also guide the uniform nucleation of Zn2+ in graphite voids. With such synergy effect, the graphite‐coated Zn anode (Zn–G) displays low overpotential, high reversibility, and dendrite‐free durability compared with the pristine Zn. Consequently, a low voltage hysteresis of ≈28 mV can be achieved and maintained over 200 h. Furthermore, the Zn–G anode is paired with a V2O5·xH2O cathode to construct a rechargeable ZIB. As‐assembled device can output high energy/power density of 324.3 Wh kg−1/3269.8 W kg−1 (based on the active mass loading in cathode) together with a capacity retention of ≈84% over 1500 cycles at a current density of 5 A g−1.

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Section: Resultsmentioning

confidence: 99%

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Dong

et al. 2020

Adv Funct Materials

180

146

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“…Once the b value is close to 0.5, it indicates a semi‐infinite linear diffusion process derived from battery‐type intercalation. [ 37 ] If the b value is close to 1.0, it illustrates that the capacity is contributed by the capacitive‐type behavior. With scan rates increased from 0.1 to 1 mV s −1 , the b values of the peaks calculated from the log ( i ) versus log ( v ) were 0.88, 0.85, 0.79, and 1.12 (Figure S9, Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

Intercalation Pseudocapacitive Zn²⁺ Storage with Hydrated Vanadium Dioxide toward Ultrahigh Rate Performance

et al. 2020

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The weak van der Waals interactions enable ion‐intercalation‐type hosts to be ideal pseudocapacitive materials for energy storage. Here, a methodology for the preparation of hydrated vanadium dioxide nanoribbon (HVO) with moderate transport pathways is proposed. Out of the ordinary, the intercalation pseudocapacitive reaction mechanism is discovered for HVO, which powers high‐rate capacitive charge storage compared with the battery‐type intercalation reaction. The main factor is that the defective crystalline structure provides suitable ambient spacing for rapidly accommodating and transporting cations. As a result, the HVO delivers a fast Zn2+ ion diffusion coefficient and a low Zn2+ diffusion barrier. The electrochemical results with intercalation pseudocapacitance demonstrate a high reversible capacity of 396 mAh g−1 at 0.05 A g−1, and even maintain 88 mAh g−1 at a high current density of 50 A g−1.

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“…After that, a variaty of organic cathodes coupled with carbonyl groups were reported, such as tetrachloro‐1,4‐benzoquinone, [ 46 ] pyrene‐4,5,9,10‐tetraone, [ 47 ] and 3,4,9,10‐perylenetetracarboxylic dianhydride. [ 48 ] However, the redox potentials of these organic cathodes is usually between 0.24 and 0.34 V. Compared with organic carbonyl materials, conductive polymers with long‐range π‐conjugative structure have higher structural stability and electrical conductivity. However, the discharge platforms of most conductive polymers reported so far are not obvious, [ 49,50 ] and they all show an inclined discharge curve, with the redox potential only around 0.24 V (vs SHE), which involves their complicated ion storage mechanism.…”

Section: Toward High‐voltage Azbs: Strategies and Advancementsmentioning

confidence: 99%

High‐Voltage Rechargeable Aqueous Zinc‐Based Batteries: Latest Progress and Future Perspectives

Xie

Zhang

et al. 2021

Small Science

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Rechargeable aqueous zinc‐based batteries (AZBs) have been recently considered as desirable energy storage devices for renewable energy storage because of their high theoretical capacity, low cost, and high safety. Despite the inspiring achievements in this field, the energy density of AZBs is still far below expectation, which directly hinders their practical application as next‐generation secondary cells. To address this issue, previously, reseach efforts have been mainly dedicated to the improvement of capacity by designing different kinds of high‐capacity electrode candidates, especially the cathode materials. In recent years, elevation of the output voltage for energy density improvement has gained more and more attention. The main limitation of the relatively low output voltage of AZBs lies in the narrow electrochemically stable window of aqueous electrolytes, which results in limited choice of cathode materials with high potential. Herein, by summarizing recently reported work in this field, the strategies applied to high‐voltage AZB construction are classified into two categories, from the aspects of electrode and battery structure. Classic examples of each category are discussed in detail, and their respective advantages/defects are compared and commented on. Finally, further challenges are elaborated to provide more insights into this area.

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Aromatic organic molecular crystal with enhanced π–π stacking interaction for ultrafast Zn-ion storage

Abstract:
Aqueous zinc batteries are promising in daily quick energy storage, but their commercialization is limited by the poor rate capability and low capacity of Zn-ion hosts, especially at practical-level mass...

Cited by 215 publications

References 45 publications

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Intercalation Pseudocapacitive Zn²⁺ Storage with Hydrated Vanadium Dioxide toward Ultrahigh Rate Performance

High‐Voltage Rechargeable Aqueous Zinc‐Based Batteries: Latest Progress and Future Perspectives

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Aromatic organic molecular crystal with enhanced π–π stacking interaction for ultrafast Zn-ion storage

Abstract: Aqueous zinc batteries are promising in daily quick energy storage, but their commercialization is limited by the poor rate capability and low capacity of Zn-ion hosts, especially at practical-level mass...

Cited by 215 publications

References 45 publications

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Pencil Drawing Stable Interface for Reversible and Durable Aqueous Zinc‐Ion Batteries

Intercalation Pseudocapacitive Zn2+ Storage with Hydrated Vanadium Dioxide toward Ultrahigh Rate Performance

High‐Voltage Rechargeable Aqueous Zinc‐Based Batteries: Latest Progress and Future Perspectives

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Product

Resources

About

Abstract:
Aqueous zinc batteries are promising in daily quick energy storage, but their commercialization is limited by the poor rate capability and low capacity of Zn-ion hosts, especially at practical-level mass...

Intercalation Pseudocapacitive Zn²⁺ Storage with Hydrated Vanadium Dioxide toward Ultrahigh Rate Performance