200 MPa cold isostatic pressing creates surface-microcracks in a Zn foil for scalable and long-life zinc anodes

Zhang, Di; Lü, Hao; Lyu, Nawei; Jiang, Xin; Jin, Yang

doi:10.1039/d2na00682k

Cited by 9 publications

(5 citation statements)

References 48 publications

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“…Motivated by the above analysis, the surficial texture of Zn metal was first regulated by etching or cold isostatic pressing process. [111,113,114] According to DFT results, Sun's group reported that Zn atoms more easily adsorb on the (100) plane than on the (002) plane, indicating preferential Zn deposition on the former. [110] Moreover, different (100) plane-rich hexagonal holes on the surface (h-Zn) were designed by an acid-etching process (Figure 7d,e).…”

Section: Texturementioning

confidence: 99%

Strategies for Optimizing the Zn Anode/Electrolyte Interfaces Toward Stable Zn‐Based Batteries

Gao,

Xie,

Zeng

et al. 2023

Small Methods

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Aqueous rechargeable Zn‐ion batteries (ARZIBs) have attracted extensive attention because of the advantages of high energy density, high safety, and low cost. However, the commercialization of ARZIBs is still challenging, mainly because of the low efficiency of Zn anodes. Several undesirable reactions (e.g., Zn dendrite and byproduct formation) always occur at the Zn anode/electrolyte interfaces, resulting in low Coulombic efficiency and rapid decay of ARZIBs. Motivated by the great interest in addressing these issues, various optimization strategies and related mechanisms have been proposed to stabilize the Zn anode‐electrolyte interfaces and enlengthen the cycling lifespan of ARZIBs. Therefore, considering the rapid development of this field, updating the optimization strategies in a timely manner and understanding their protection mechanisms are highly necessary. This review provides a brief overview of the Zn anode/electrolyte interfaces from the fundamentals and challenges of Zn anode chemistry to related optimization strategies and perspectives. Specifically, these strategies are systematically summarized and classified, while several representative works are presented to illustrate the effect and corresponding mechanism in detail. Finally, future challenges and research directions for the Zn anode/electrolyte interfaces are comprehensively clarified, providing guidelines for accurate evaluation of the interfaces and further fostering the development of ARZIBs.

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Section: Texturementioning

confidence: 99%

Strategies for Optimizing the Zn Anode/Electrolyte Interfaces Toward Stable Zn‐Based Batteries

Gao,

Xie,

Zeng

et al. 2023

Small Methods

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“…Most of the studies on CIP have been reported in the field of metals and ceramics [22][23][24], among which there are some reports on density and porosity changes with CIP pressure in the field of ceramics [20,21]. Studies using CIP to manufacture isotropic carbon blocks and graphite blocks have been reported in the past but are extremely uncommon [25,26].…”

Section: Introductionmentioning

confidence: 99%

Effect of Microstructural Change under Pressure during Isostatic Pressing on Mechanical and Electrical Properties of Isotropic Carbon Blocks

Byun,

Lee,

Kim

et al. 2024

Materials

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In this study, carbon blocks were fabricated using isotropic coke and coal tar pitch as raw materials, with a variation in pressure during cold isostatic pressing (CIP). The CIP pressure was set to 50, 100, 150, and 200 MPa, and the effect of the CIP pressure on the mechanical and electrical properties of the resulting carbon blocks was analyzed. Microstructural observations confirmed that, after the kneading, the surface of isotropic coke was covered with the pitch components. Subsequently, after the CIP, granules, which were larger than isotropic coke and the kneaded particles, were observed. The formation of these granules was attributed to the coalescence of kneaded particles under the applied pressing pressure. This granule formation was accompanied by the development of pores, some remaining within the granules, while others were extruded, thereby existing externally. The increase in the applied pressing pressure facilitated the formation of granules, and this microstructural development contributed to enhanced mechanical and electrical properties. At a pressing pressure of 100 MPa, the maximum flexural strength was achieved at 33.3 MPa, and the minimum electrical resistivity was reached at 60.1 μΩm. The higher the pressing pressure, the larger the size of the granules. Pores around the granules tended to connect and grow larger, forming crack-like structures. This microstructural change led to degraded mechanical and electrical properties. The isotropic ratio of the carbon blocks obtained in this study was estimated based on the coefficient of thermal expansion (CTE). The results confirmed that all carbon blocks obtained proved to be isotropic. In this study, a specimen type named CIP-100 exhibited the best performance in every aspect as an isotropic carbon block.

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“…Therefore, it is essential to enhance the cyclic reversibility of stripping/plating or plating/stripping for thin zinc anodes. [7] Currently, numerous effective strategies have existed to enhance the reversibility of zinc metal stripping/depositing or depositing/stripping, such as bulk zinc optimization, [8][9][10][11] coatings, [12][13][14][15][16][17] separators, [18,19] electrolyte additives, [20][21][22][23][24][25] highconcentration electrolytes, [26,27] nanomicellar electrolyte, [28] and gradient designs. [29,30] Moreover, copper foils utilized in anodefree zinc-ion batteries [31][32][33] for achieving a desirable 100% DOD possess several advantages including cost-effectiveness, excellent ductility and conductivity, suitable electrode potential, and low zinc deposition barrier.…”

Section: Introductionmentioning

confidence: 99%

Three‐in‐One Zinc Anodes Created by a Large‐scale Two‐Step Method Achieving Excellent Long‐Term Cyclic Reversibility and Thin Electrode Integrity

Lu,

Zhang,

Zhu

et al. 2024

Advanced Science

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Practical aqueous zinc‐ion batteries require low‐cost thin zinc anodes with long‐term reversible stripping/depositing. However, thin zinc anodes encounter more severe issues than thick zinc, such as dendrites and uneven stripping, resulting in subpar performance and limited lifetimes. Here, this work proposes a three‐in‐one zinc anode obtained by a large‐scale two‐step method to address the above issues. In a three‐in‐one zinc anode, the copper foil as an inactive current collector solves the gradual reduction of the active area when only the pure zinc as an active current collector. This work develops an automatic electroplating device that can continuously deposit a zinc layer on a conducting foil to meet the demand for zinc‐coated copper foils. The sodium carboxymethylcellulose (CMC)‐zinc fluoride (ZnF2) protective layer prevents direct contact between zinc and separator, and provides a uniform and sufficient supply of zinc ions. The CMC‐ZnF2‐coated copper foil performs up to 3000 reversible zinc deposition/stripping cycles with a cumulative capacity of 6 Ah cm−2 and an average Coulombic efficiency of 99.94%. The Zn||ZnVO cell using the three‐in‐one anode achieved a high capacity retention of over 70% after 15 000 cycles. The proposed three‐in‐one anode and the automatic electroplating device will facilitate industrialization of practical thin zinc anodes.

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200 MPa cold isostatic pressing creates surface-microcracks in a Zn foil for scalable and long-life zinc anodes

Abstract: The Zn anode suffers from severe dendrite growth and side reactions, which restrict its development in the realm of large-scale energy storge. Herein, this work proposes a method to create...

Cited by 9 publications

References 48 publications

Strategies for Optimizing the Zn Anode/Electrolyte Interfaces Toward Stable Zn‐Based Batteries

Strategies for Optimizing the Zn Anode/Electrolyte Interfaces Toward Stable Zn‐Based Batteries

Effect of Microstructural Change under Pressure during Isostatic Pressing on Mechanical and Electrical Properties of Isotropic Carbon Blocks

Three‐in‐One Zinc Anodes Created by a Large‐scale Two‐Step Method Achieving Excellent Long‐Term Cyclic Reversibility and Thin Electrode Integrity

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