Progress in interface structure and modification of zinc anode for aqueous batteries

Qin, Runzhi; Wang, Yuetao; Lu, Yong; Yang, Luyi; Zhao, Qinghe; Shihua, Ding; Liu, Lele; Pan, Feng

doi:10.1016/j.nanoen.2022.107333

Cited by 141 publications

(77 citation statements)

References 110 publications

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“…The function of the cathode is to insert and extract Zn 2+ . It comprises active materials, conductive agents, and adhesives [ 40 , 41 ]. The electrolyte is a solution containing Zn 2+ , which is another source of Zn 2+ in the battery.…”

Section: Basic Component and Energy Storage Mechanismmentioning

confidence: 99%

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

Feng

Wang

2023

Molecules

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Aqueous zinc-ion batteries (AZIBs), the favorite of next-generation energy storage devices, are popular among researchers owing to their environmental friendliness, low cost, and safety. However, AZIBs still face problems of low cathode capacity, fast attenuation, slow ion migration rate, and irregular dendrite growth on anodes. In recent years, many researchers have focused on Zn anode modification to restrain dendrite growth. This review introduces the energy storage mechanism and current challenges of AZIBs, and then some modifying strategies for zinc anodes are elucidated from the perspectives of experiments and theoretical calculations. From the experimental point of view, the modification strategy is mainly to construct a dense artificial interface layer or porous framework on the anode surface, with some research teams directly using zinc alloys as anodes. On the other hand, theoretical research is mainly based on adsorption energy, differential charge density, and molecular dynamics. Finally, this paper summarizes the research progress on AZIBs and puts forward some prospects.

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Section: Basic Component and Energy Storage Mechanismmentioning

confidence: 99%

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

Feng

Wang

2023

Molecules

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“…The issues of zinc anodes have been usually addressed in two kinds of methods, including (i) anode tailoring with the introduction of a protective layer on Zn foil, design of a three-dimensional Zn structure and use of Zn alloy, and (ii) electrolyte modification. Several review articles have highlighted these strategies [28][29][30][31][32]. For example, Tao and co-workers discussed different methods for introducing protective layer strategies on the surface of the Zn anodes [28].…”

Section: Introductionmentioning

confidence: 99%

An Overview of Challenges and Strategies for Stabilizing Zinc Anodes in Aqueous Rechargeable Zn-Ion Batteries

Thieu

Chen

et al. 2023

Batteries

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Aqueous rechargeable zinc ion batteries (ZIBs) have been revived and are considered a promising candidate for scalable electrochemical energy storage systems due to their intrinsic safety, low cost, large abundance, mature recyclability, competitive electrochemical performance, and sustainability. However, the deployment of aqueous rechargeable ZIBs is still hampered by the poor electrochemical stability and reversibility of Zn anodes, which is a common, inherent issue for most metal-based anodes. This review presents a comprehensive and timely overview of the challenges and strategies of Zn anodes toward durable ZIBs. First, several challenges that significantly reduce the Coulombic efficiency and cycling stability of Zn anodes are briefly discussed including dendrite formation, hydrogen evolution, and corrosion. Then, the mitigation strategies are summarized in terms of modifying the electrode/electrolyte interfaces, designing electrode structures, and optimizing electrolytes and separators. Further, we comprehensively discuss the mechanisms behind these issues and improvement strategies with respect to the anodes, electrolytes, and separators. Lastly, we provide perspectives and critical analyses of remaining challenges, outlook, and future direction for accelerating the practical application of aqueous rechargeable ZIBs.

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“…[ 8 ] However, many coating strategies commonly lead to an increase in the resistance at the electrolyte‐electrode interface, resulting in a decrease in energy density. [ 9 ] Furthermore, the significant volume change in the Zn‐based anode during repeated plating/stripping may damage the protective layer or strip it entirely from the Zn substrate. Therefore, reliable interfacial modifications that regulate Zn anodes for long‐term cycling performance while maintaining fast Zn deposition are highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Stabling Zinc Metal Anode with Polydopamine Regulation through Dual Effects of Fast Desolvation and Ion Confinement

Wang

Pan

et al. 2022

Advanced Energy Materials

116

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and suitable redox potential (−0.76 V vs standard hydrogen electrode). [2] However, corrosion, passivation, and dendrites on the Zn anode, as well as parasitic side reactions severely hinder the application of AZIBs in energy-storage systems. [3] In addition, the limited specific area of commercial Zn foil results in inadequate contact between electrolyte and anode, thus preventing Zn ion transport at the electrolyte-anode interface. The inherent rough surface results in the continuous deposition of Zn 2+ on the tips with an enhanced electric field, which gradually evolves into the formation of Zn dendrites. [4] Interface modification, structural design, and Zn alloying are typical strategies for improving the performance of Zn anodes. [5] However, the 3D structure and eutectic alloy design of Zn anodes weaken the inherent strengths of AZIBs, that is, their low cost and environmental benignity. [6] Similar to the optimization strategy for lithium metal, the protective layer coated on the surface of zinc acts as a continuous solid-electrolyte interface (SEI) between the metal zinc anode and electrolyte. [7] Hence, interface modification is an effective method for improving the stability of zinc electrode interface and for alleviating the disordered deposition of Zn 2+ and dendrite growth. [8] However, many coating strategies Metal zinc is recognized as a promising anode candidate for aqueous zinc-ion batteries (AZIBs), however, dendrites and byproducts formation severe deteriorate its reversibility and practical lifespan. Herein, a polydopamine (PDA) layer, which offers the dual effects of fast desolvation and ion confinement, is constructed on the surface of a Zn anode for efficient AZIBs. The abundant polar functional groups in PDA significantly enhance interfacial contact in aqueous media, which reduces the number of water molecules reaching the zinc surface through fast desolvation, thus lowering the energy barrier for Zn 2+ migration. Furthermore, the porous PDA coating controls the ion flux via the ion-confinement effect, thereby accelerating Zn 2+ kinetics on the zinc surface. Consequently, Zn@PDA exhibits significantly improved Zn 2+ deposition kinetics (nucleation potential of only 32.6 mV vs 50.2 mV of bare Zn) compared with bare Zn at 2.0 mA cm −2 , with a dendrite-free surface and negligible byproduct formation. When paired with a MnO 2 cathode, the Zn@PDA// MnO 2 cell delivers high discharge capacity and long cycle stability without significant performance deterioration over 1000 cycles at 1.0 A g −1 . Additionally, the cell demonstrates excellent shelving-restoring performance.

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Progress in interface structure and modification of zinc anode for aqueous batteries

Cited by 141 publications

References 110 publications

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

An Overview of Challenges and Strategies for Stabilizing Zinc Anodes in Aqueous Rechargeable Zn-Ion Batteries

Stabling Zinc Metal Anode with Polydopamine Regulation through Dual Effects of Fast Desolvation and Ion Confinement

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