Interfacial defect engineering via combusted graphene in V2O5 nanochips to develop high‐rate and stable zinc-ion batteries

Yoo, Geun Jong; Ryu, Gyeong Hee; Koo, Bon‐Ryul; An, Geon‐Hyoung

doi:10.1016/j.ceramint.2021.08.064

Cited by 22 publications

(13 citation statements)

References 57 publications

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“…The electrochemical kinetics of the various electrodes is proved by the EIS and CV results (Figure 5). Here, the EIS Nyquist plots (Figure 5A) of all three electrodes exhibit a semicircle in the high‐frequency region and a straight sloping line in the low‐frequency region, which express the charge‐transfer resistance and Warburg impedance, respectively 21‐23 . The charge‐transfer resistances of the EZN and EPZN electrodes are seen to be similar to that of the bare Zn, thus indicating that the surface engineering does not alter the electrical properties.…”

Section: Resultsmentioning

confidence: 84%

“…Here, the EPZN shows the lowest contact angle of 71° (Figure 4F) due to the embossed and punched structure, while the bare Zn exhibits the highest contact angle of 103° (Figure 4D) due to flat and smooth surface. Thus, the enhanced wettability of the EPZN due to the surface engineering process is expected to improve the rate performance and long cycling stability of the ZIC via efficient operation of the electrode‐electrolyte interface 7,21 …”

Section: Resultsmentioning

confidence: 99%

“…The Zn‐ion diffusion coefficients (D) were obtained using Equations () and () 21‐23 :

Z_{real} goodbreak= R_{e} goodbreak+ R_{ct} goodbreak+ σ_{w} ω^{- \frac{1}{2}}

D goodbreak= R^{2} T^{2} / 2 A^{2} n^{4} F^{4} C^{2} {σ_{normalw}}^{2}

where R e is the bulk resistance, D is the ion diffusion coefficient, R is the gas constant, T is the temperature, A is the area of the electrode, n is the electron number per molecule, F is the Faraday constant, and C is the ion molar concentration. From the correlation between Z real and ω −1/2 , the σ w values of the bare Zn, the EZN, and the EPZN electrodes were calculated as 5.3, 9.7, and 15.5 Ω cm 2 s −1/2 , respectively, as indicated in Figure 5B.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the enhanced wettability of the EPZN due to the surface engineering process is expected to improve the rate performance and long cycling stability of the ZIC via efficient operation of the electrode-electrolyte interface. 7,21 The various ZICs were fabricated using the bare Zn, the EZN, or the EPZN as the anode, 2 M ZnSO 4 as the electrolyte, and activated carbon as the cathode. The electrochemical kinetics of the various electrodes is proved by the EIS and CV results (Figure 5).…”

Section: Resultsmentioning

confidence: 99%

“…In this regard, the zinc (Zn) anode is advantageous because of its excellent air/water safety relative to lithium, sodium, and potassium, high theoretic capacity (823 mAh g À1 , Zn/Zn 2+ ), low redox potential (À0.76 V vs SCE), material abundance, and good electrical conductivity. [21][22][23][24][25][26][27][28][29][30] Thus, ZICs that function via a hybrid mechanism of Zn 2+ plating/stripping on the Zn anode and electrical doublelayer formation via ion adsorption/de-adsorption on the cathode surface have been considered as suitable for the next-generation ESS devices. 3,[24][25][26] However, the main limitations to the application of ZICs include Zn dendrite formation, sluggish reaction kinetics, and insufficient anode performance.…”

Section: Introductionmentioning

confidence: 99%

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Stable anode enabled by an embossed and punched structure for a high‐rate performance Zn‐ion hybrid capacitor

Yun

Jang

2021

Intl J of Energy Research

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Summary Zinc (Zn)‐ion hybrid capacitors (ZICs) have been considered as the next‐generation energy storage technology due to their high energy density and excellent safety. However, ZICs still have serious challenges in overcoming the poor rate performance and low long‐term stability at high current density related to the inefficient use of the interface between the Zn anode and electrolyte, along with the poor wettability of the electrode, which lead to the growth of uniform Zn dendrites on the anode surface. To address these drawbacks, an advanced surface‐engineering approach is presented herein, involving a uniform, embossed, and punched anode structure. The as‐fabricated ZIC exhibits a superb energy storage performance and reversibility, with improved energy densities of 108 and 69 W h kg−1 at 450 and 9000 W kg−1, and an excellent fast long‐term stability, with a capacity retention of 90% during 10 000 cycles at 10.0 A g−1. These findings suggest that advanced surface engineering is an influential tool for the next‐generation ZICs.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

“…The Zn‐ion diffusion coefficients (D) were obtained using Equations () and () 21‐23 :

Z_{real} goodbreak= R_{e} goodbreak+ R_{ct} goodbreak+ σ_{w} ω^{- \frac{1}{2}}

D goodbreak= R^{2} T^{2} / 2 A^{2} n^{4} F^{4} C^{2} {σ_{normalw}}^{2}

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stable anode enabled by an embossed and punched structure for a high‐rate performance Zn‐ion hybrid capacitor

Yun

Jang

2021

Intl J of Energy Research

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Advances on Defect Engineering of Vanadium‐Based Compounds for High‐Energy Aqueous Zinc–Ion Batteries

Guo

et al. 2022

Advanced Energy Materials

139

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However, the organic electrolytes used in LIBs are highly toxic and flammable, and are deemed safety hazards. The limited resources and high-cost of lithium and harsh assemble conditions of LIB cells also hinder the application of LIBs in large-scale energy storage systems. [2] P. Rüetschi proposed the '3 E' criteria including Energy, Economics, and Environment to determine whether the battery system was practical for daily use. [3] Aqueous electrolytes with low price, high safety, and high conductivity can drastically reduce the production cost and improve battery safety. [4] Aqueous zincion batteries (ZIBs) use Zinc as an environment-friendly anode which shows low redox potential (−0.78 eV vs SHE), high electronic conductivity as well as large capacity (820 mAh g −1 and 5851 mAh cm −3 ). [5,6] Therefore, ZIBs are considered as one of the most competitive and promising development directions for next-generation large-scale energy storage. As the initial work in mild aqueous electrolyte, an aqueous ZIB with MnO 2 cathode and Zn anode was reported by Kang and co-workers in 2012. [7] Since then, research interests in ZIBs area develops burgeoningly and more than 1000 research papers about electrode materials on aqueous ZIBs were published.The commonly reported cathode materials are V-based compounds, [8,9] manganese oxides, [10,11] Prussian blue analogs, [12,13] metal chalcogenides, [14,15] and organic compounds. [16,17] Among them, manganese oxides have moderate operating potential and high theoretical capacity, but suffer from manganese dissolution in aqueous electrolytes due to Jahn-Teller dissolution of Mn 3+ , which leads to structural collapse and poor cycling stability. [10,11] Prussian blue analogs often process high operating potential beyond 1.5 V and their open cage-like framework guarantees structure stability under rapid Zn 2+ transmission, leading to good rate performance and long-cycle capacity retention. However, the large framework structures also bring limited theoretical capacity and suffer from O 2 evolution due to the high operating potential. [13,18] Organic cathodes process passable theoretical capacity, high structural diversity, and flexibility, bringing potential prospects in flexible electrodes. But the high dissolubility in electrolytes and high resistance are two bumps to overcome for organic cathodes used in ZIBs. [16,17] V-based compounds have received extensive attention as cathode for ZIBs due to the rich reserves and diversity of valences of vanadium as well as their general high theoretical capacity and Aqueous zinc-ion batteries (ZIBs) have been promptly developed as a competitive and promising system for future large-scale energy storage. In recent years, vanadium (V)-based compounds, with diversity of valences and high electrochemical-activity, have been widely studied as cathodes for aqueous ZIBs because of their rich reserves and high theoretical capacity. However, the stubborn issues including low conductivity and sluggish kinetics, plague their smooth application in aqueous...

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Using MXene as a Chemically Induced Initiator to Construct High‐Performance Cathodes for Aqueous Zinc‐Ion Batteries

Chen,

Liu,

Xiao

et al. 2024

Angewandte Chemie

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MXene usually exhibits weak pseudo‐capacitance behavior in aqueous zinc‐ion batteries, which cannot provide sufficient reversible capacity, resulting in the decline of overall capacity when used as the cathode materials. Taking inspiration from polymer electrolyte engineering, we have conceptualized an in‐situ induced growth strategy based on MXene materials. Herein, 5.25 % MXene was introduced into the nucleation and growth process of vanadium oxide (HVO), providing the heterogeneous nucleation site and serving as an initiator to regulate the morphology and structural of vanadium oxide (T‐HVO). The resulted materials can significantly improve the capacity and rate performance of zinc‐ion batteries. The growth mechanism of T‐HVO was demonstrated by both characterizations and DFT simulations, and the improved performance was systematically investigated through a series of in‐situ experiments related to dynamic analysis steps. Finally, the evaluation and comparison of various defect introduction strategies revealed the efficient, safety, and high production output characteristics of the in‐situ induced growth strategy. This work proposes the concept of in‐situ induced growth strategy and discloses the induced chemical mechanism of MXene materials, which will aid the understanding, development, and application of cathode in aqueous zinc‐ion batteries.

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Interfacial defect engineering via combusted graphene in V2O5 nanochips to develop high‐rate and stable zinc-ion batteries

Cited by 22 publications

References 57 publications

Stable anode enabled by an embossed and punched structure for a high‐rate performance Zn‐ion hybrid capacitor

Stable anode enabled by an embossed and punched structure for a high‐rate performance Zn‐ion hybrid capacitor

Advances on Defect Engineering of Vanadium‐Based Compounds for High‐Energy Aqueous Zinc–Ion Batteries

Using MXene as a Chemically Induced Initiator to Construct High‐Performance Cathodes for Aqueous Zinc‐Ion Batteries

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