Alloying Strategy for High-Performance Zinc Metal Anodes

Li, Ruotong; Du, Yingxiao; Li, Yuehua; He, Zhangxing; Dai, Lei; Dai, Lei; Wu, Xianwen; Zhang, Jiujun; Yi, Jin

doi:10.1021/acsenergylett.2c01960

Cited by 105 publications

(51 citation statements)

References 106 publications

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“…In fact, the separator modification is also an effective approach to improve Zn anode stability and extend AZIBs service life, but it does not receive considerable attention to investigate separator–electrolyte or separator–anode interfaces. − Filter paper, glass fiber, and polypropylene membrane separators now are the most widely used for research on AZIBs. Unfortunately, owing to the poor mechanical properties, low wettability, and tangled pore distribution, Zn dendrite formation and growth are easily arisen in these separators and cause short-circuit, which are unable to satisfy the AZIBs commercialization. − Therefore, rationally designing a separator with low cost, good mechanical strength, and simple preparation to restrain the formation of Zn dendrite and water-induced side reactions is urgently needed for the development of high-performance AZIBs.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of Zinc Dendrite Growth by WC-Cellulose Separators for High-Performance Zinc-Ion Batteries

Woottapanit,

Yang,

Cao

et al. 2023

ACS Appl. Energy Mater.

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The strategies developed to achieve a stable and dendrite-free Zn anode in aqueous zinc-ion batteries, such as constructing an artificial solid−electrolyte interface, modifying the electrolyte and designing a versatile separator, have not been able to meet the requirements for large-scale commercialization due to the complex preparation process and high manufacturing costs. Here, we fabricated a WC-cellulose nanofiber (WCCNF) composite separator with the advantages of cost-efficiency and simplified preparation by a facile solution-casting method for a dendrite-free Zn anode. The fabricated WCCNF separator can efficiently lower the Zn nucleation overpotential, homogeneously the Zn nucleation sites, postpone surface corrosion, promote the uniform Zn deposition, and finally realize the high-performance Zn anode. Consequently, compared with the pure CNF separator, the WCCNF separator vastly extends the cycling lifespan of the Zn∥Zn symmetric cell to 1200 h at 1 mA•cm −2 /0.5 mA h•cm −2 and 1000 h at 5 mA•cm −2 /1.25 mA h•cm −2 . Moreover, using (NH 4 ) 2 V 10 O 25 •8H 2 O (NVO) as the cathode material, the full cell with the WCCNF separator shows a superior discharge capacity of 132 mA h•g −1 with a capacity retention of 85.2% after 500 cycles at 3 A•g −1 , whereas the one with CNF rapidly degrade the capacity to 30 mA h•g −1 , indicating the excellent cycling reversibility and stability of the Zn anode endowed by the WCCNF separator. Benefiting from the merits of WCCNF in the reversibility of Zn plating/stripping, the Zn∥NVO pouch cell exhibits a high discharge capacity of 121.6 mA h•g −1 with a high capacity retention of 84.4% after 50 cycles at 0.5 A•g −1 . This work provides a low-cost and multifunctional cellulose-based separator for the large-scale commercialization of highperformance AZIBs.

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Section: Introductionmentioning

confidence: 99%

Inhibition of Zinc Dendrite Growth by WC-Cellulose Separators for High-Performance Zinc-Ion Batteries

Woottapanit,

Yang,

Cao

et al. 2023

ACS Appl. Energy Mater.

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“…Recently, one class of Zn plating regulation strategy has gained attention by constructing Zn-alloying sites on the Zn plating surface, − where the Zn electrodeposition was effectively regulated by alloying Zn with Au, Ag, , Al, etc. The general principle of this strategy is based on the elimination of a heterogeneous Zn nucleation barrier by the high solid solubility between Zn and Zn-alloying metal and the homogenization of Zn deposition via the fast internal diffusion of Zn through the developed alloy phases.…”

Section: Introductionmentioning

confidence: 99%

Zn-Alloying Sites with Self-Adsorbed Molecular Crowding Layer as a Stable Interfacial Structure of Zn Electrodes

Chai

Meng

et al. 2023

ACS Appl. Mater. Interfaces

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Rechargeable aqueous zinc (Zn) metal batteries (ZMBs) have gained tremendous attention because of their intrinsic safety and low cost. However, the lifespan of ZMBs is seriously limited by severe Zn dendritic growth in aqueous electrolytes. Despite the feasibility of Zn deposition regulation by introducing Zn-alloying sites at the Zn plating surface, the activity of the Zn-alloying sites can be seriously reduced by side reactions in the aqueous environment. Here, we propose a facile but efficacious strategy to reinforce the activity of the Zn-alloying sites by introducing a low quantity of polar organic additive in the electrolyte that can be self-adsorbed on the Zn-alloying sites to form a molecular crowding layer against the parasitic water reduction during Zn deposition. As a consequence, stable cycling of the Zn anode can be maintained at such a multifunctional interfacial structure, arising from the synergism between the seeded low-overpotential Zn deposition on the stabilized Zn-alloying sites and a Zn2+ redistributing feature of the self-adsorbed molecular crowding layer. The interfacial design principle here can be widely employed due to the great variety of Zn-alloy and polar organic materials and potentially be applied to improve the performance of other aqueous metal batteries.

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“…To tackle this problem, introducing a zincophilic and chemically stable interfacial layer on the host surface is a simple approach to improve the deposition quality of Zn. 18 Zn−Me alloys 27 have been considered as promising Zn metal anodes, such as the Ag seeds can in situ alloy with metallic Zn during the initial Zn plating and then form Zn−Ag alloys to serve as Zn-ion nucleation sites. 28−30 In the same way, Zn−Cu alloys 30,31 have also been successfully prepared; as an example, Kwon et al 31 reported a Zn electroplating strategy to construct a stable CuZn 4 alloy-modified Cu foil by in situ alloying with a proper Zn loading for high energy ZIBs.…”

Section: Introductionmentioning

confidence: 99%

“…Zn–Me alloys have been considered as promising Zn metal anodes, such as the Ag seeds can in situ alloy with metallic Zn during the initial Zn plating and then form Zn–Ag alloys to serve as Zn-ion nucleation sites. − In the same way, Zn–Cu alloys , have also been successfully prepared; as an example, Kwon et al reported a Zn electroplating strategy to construct a stable CuZn 4 alloy-modified Cu foil by in situ alloying with a proper Zn loading for high energy ZIBs. Unfortunately, it is reported that the volumetric change of the in situ alloying process may decrease the adhesion of the alloy and the host materials, thus damaging the host interface stability. , Hence, it is necessary to develop an appropriate method that permits in situ construction of the alloy layer on host materials before the initial Zn plating.…”

Section: Introductionmentioning

confidence: 99%

Active Screen Plasma-Enabled Metal Alloying for Stable Zinc Metal Growth toward Aqueous Zinc-Ion Batteries

Wang

Zhu

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Active-screen plasma (ASP) has attracted much attention as a versatile and powerful surface engineering method owing to its simple setup, low temperature, eco-friendliness, treatment uniformity, ability to deposit nano/microparticles with sputtering targets, and capability for controlling the chemical composition and morphology of the deposition layer. Recent investigations have shown that ASP technology has been used to treat various electrode materials for excellent electrochemical performance. This work demonstrates the feasibility of ASP technology to construct an artificial alloy layer on host materials and serve as promising Zn anode supports. We reveal the effect of some controllable or measurable variables on the formed alloy layer and discuss the core process of ASP-enabled metal alloying. Attractively, a stable and uniform Cu5Zn8 alloy layer with good zincophilic can effectively reduce the energy barrier of Zn nucleation and guide uniform Zn nucleation, which alleviates the dendritic growth during Zn deposition. Consequently, the Cu5Zn8-modified Cu host as the Zn anode support displays a high Coulombic efficiency of 99.5%, a lower overpotential of 45 mV, and a longer cycling life over 330 h. The assembled full cells deliver an exceptional capacity of 114 mA h g–1 after 500 cycles with a capacity retention of 68%. This work provides an idea for constructing a stable Zn deposition interface and promotes the development of ASP technology.

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Alloying Strategy for High-Performance Zinc Metal Anodes

Cited by 105 publications

References 106 publications

Inhibition of Zinc Dendrite Growth by WC-Cellulose Separators for High-Performance Zinc-Ion Batteries

Inhibition of Zinc Dendrite Growth by WC-Cellulose Separators for High-Performance Zinc-Ion Batteries

Zn-Alloying Sites with Self-Adsorbed Molecular Crowding Layer as a Stable Interfacial Structure of Zn Electrodes

Active Screen Plasma-Enabled Metal Alloying for Stable Zinc Metal Growth toward Aqueous Zinc-Ion Batteries

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