Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery

Kwak, Byeong Sub; Kim, Dong Young; Park, Sang Sun; Kim, Bum Soo; Kang, Misook

doi:10.1016/j.cej.2015.06.062

Cited by 30 publications

(14 citation statements)

References 38 publications

(37 reference statements)

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“…As shown in Figure d, the C-Ag-Zn anode achieved superior cycling performance, with a Coulombic efficiency of 95% for 78 cycles; the C-Zn anode performed with a Coulombic efficiency of 92.6% for 25 cycles, which implied that the Ag addition also improved the Zn anode even at a high DC/E ratio (12 mAh mL –1 ). The simple loading of Ag nanoparticles onto the Zn anode, without any complex structural or molecular design, improved its cycling performance to be comprehensively superior to that of previously reported, deeply cycled Zn anodes − (Table S4) with 100% depth-of-discharge in alkaline electrolytes (Figure e). Three parameters (cycle life, Coulombic efficiency, and DC/E ratio) were considered in the comparison.…”

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confidence: 78%

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

et al. 2021

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Rechargeable aqueous zinc anodes have gained tremendous attention because of their merits of intrinsic safety, low cost, and high theoretical volumetric capacity (5854 mAh cm −3 for Zn metal). In aqueous electrolytes, zinc anodes suffer from severe dendritic metal deposition. The regulation of Zn by inducing Zn-alloying metals has been reported. However, the underlying mechanisms have remained elusive. Here, for the first time, we did a comprehensive analysis to elucidate the mechanisms for the seeded and nondendritic growth of Zn on alloy anodes. We achieved uniform Zn deposition by introducing a Zn-alloying and soluble metal, Ag, on Zn anodes. Due to a shift of thermodynamic potential and the spatial confinement, the Ag-modified Zn anode exhibited improved overall cycling performance compared with previous deep-cycle Zn anodes. Furthermore, the seeded Zn deposition was visualized in operando for the first time using an optical microscope. The alloy-seeding design principle here can potentially be applied to improve the rechargeability of other metal anodes.

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confidence: 78%

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

et al. 2021

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“…The theoretical capacity and energy ratio of Zinc-Nickel single flow batteries (ZNBs) are higher than other RFB counterparts. The intrinsic electromotive force is above 1.72V [10], which is much higher than VBFs (1.20V ) [8], leading to an improved specific energy (more than 85W h/kg) [9,11].…”

Section: Introductionmentioning

confidence: 95%

“…Throughout the charging phase, the active materials are redistributed leading to a nonlinear distribution, so that redox reaction is far from the equilibrium status. As a result, a concentrated layer of zincate boundary is grown around the surface of the zinc electrode, resulting in the appearance of dendritic zinc depositions [13,10]. Once dendrite is formed, due to the higher current density at the tips than other locations, the dendrites growth is even more aggressive [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Eventually, battery failures can be observed, such as internal short circuits, cell housing damage, capacity deterioration, unreliable cell performance and etc. In this regard, number of studies focus on how to suppress the zinc dendrite formation [10,12,13,14,15]. Non-organic and organic additives [16] have been added in the electrolyte and electrode.…”

Section: Introductionmentioning

confidence: 99%

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A novel model predictive control scheme based observer for working conditions and reconditioning monitoring of Zinc-Nickel single flow batteries

Xiao

et al. 2020

Journal of Power Sources

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Zinc-nickel single flow batteries (ZNBs) have been demonstrated as a promising alternative to lithium batteries for next generation grid-tied energy storage. However, due to the dendritic growth, the monitoring of working conditions in terms of the state of charge (SoC) and battery capacity is intractable. Although longer lifespan can be achieved through the periodic reconditioning maintenance, there is no mature method to identify the moment of reconditioning. Model predictive control (MPC) is a popular optimization paradigm in the process control. By incorporating the merits of model predictive control, this work presents a novel model predictive control based observer (MPCO) for the working conditions monitoring and reconditioning identification. Strong evidence from substantial experiments and simulations manifests the convergence, robustness, effectiveness and generality of the proposed method. The competitiveness is demonstrated by analytical comparisons against other three estimators. In this regard, the relationships of the proposed observer with other estimators are summarized briefly. At last, an indicator based on the capacity changes is proposed to judge the timing of reconditioning.

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“…For these “fossil fuel free” vehicles, a battery is the core device, which works as the heart and determines its performance to a great extent . Rechargeable Zn-based batteries with a closed mode, such as the Zn–Ni, Zn-MnO 2 , and Zn–Ag batteries seem ideal electric vehicle power supplies, because they not only inherit the advantage of the lithium battery, such as high power density and working voltage, but also possess some unique merits, such as low cost and high safety. − For these closed Zn-based batteries, charge and discharge are achieved by the reduction and oxidation of the Zn plate as the anode and the redox active materials on the cathode. − But unfortunately, in a closed Zn-based battery, the limited active material loading amount on the cathode restricts the further enhancement of specific capacity and energy density. − To address these difficulties, the integration of a closed Zn-based battery with another battery at the cell level and construction of a hybrid battery is a feasible strategy to achieve high specific capacity and power and energy densities in one power supply device simultaneously. , …”

Section: Introductionmentioning

confidence: 99%

Combination of Zn–NiCo₂S₄ and Zn–Air Batteries at the Cell Level: A Hybrid Battery Makes the Best of Both Worlds

Wang

Chen

et al. 2019

ACS Sustainable Chem. Eng.

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High performance batteries are decisive for electric vehicles. Here, to obtain a battery with high voltage and powder density as well as desirable capacity and energy density, a hybrid battery is assembled by integration the merits of Zn−NiCo 2 S 4 and Zn−air batteries in one system at the cell level. In this hybrid battery, the Zn plate acts as an anode, and aqueous alkaline serves as the electrolyte. The cathode is fabricated through self-growth of NiCo 2 S 4 nanotubes on a filter paper derived three-dimensional nitrogen doped carbon carrier, which possesses high specific capacity and excellent four-electron oxygen reduction reaction and oxygen evolution reaction activities. This hybrid battery exhibits two voltage plateaus at 1.75 and 1.08 V, which originates from the Zn−NiCo 2 S 4 and Zn− air batteries, respectively. The specific capacity of this battery reaches as high as 626 mAh•g −1 based on the mass of Zn consumed. Its energy density achieves 688 Wh•kg −1 , which outperforms both Zn−NiCo 2 S 4 and Zn−air batteries. Furthermore, the outstanding stability of this hybrid battery is demonstrated by a 400 cycle charge−discharge experiment continued for 400 h. This work creates a precedent for the development of a hybrid battery. More importantly, it also provides a feasible method for the fabrication of high performance power sources by integrating the merits of two totally different devices together.

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Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery

Cited by 30 publications

References 38 publications

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

A novel model predictive control scheme based observer for working conditions and reconditioning monitoring of Zinc-Nickel single flow batteries

Combination of Zn–NiCo₂S₄ and Zn–Air Batteries at the Cell Level: A Hybrid Battery Makes the Best of Both Worlds

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Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery

Cited by 30 publications

References 38 publications

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

Unveiling the Origin of Alloy-Seeded and Nondendritic Growth of Zn for Rechargeable Aqueous Zn Batteries

A novel model predictive control scheme based observer for working conditions and reconditioning monitoring of Zinc-Nickel single flow batteries

Combination of Zn–NiCo2S4 and Zn–Air Batteries at the Cell Level: A Hybrid Battery Makes the Best of Both Worlds

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Combination of Zn–NiCo₂S₄ and Zn–Air Batteries at the Cell Level: A Hybrid Battery Makes the Best of Both Worlds