Anode for Zinc-Based Batteries: Challenges, Strategies, and Prospects

Lü, Wenjing; Zhang, Shun; Zhang, Huamin; Li, Xianfeng

doi:10.1021/acsenergylett.1c00939

Cited by 170 publications

(137 citation statements)

References 161 publications

(597 reference statements)

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“…[ 6,7 ] However, Zn metal anodes always suffer from side reactions (dendrite growth, H 2 evolution reaction, and corrosion by‐products) in the aqueous electrolytes, significantly hindering their commercialized applications. [ 8–10 ]…”

Section: Introductionmentioning

confidence: 99%

Synergistic Solvation and Interface Regulations of Eco‐Friendly Silk Peptide Additive Enabling Stable Aqueous Zinc‐Ion Batteries

Wang

Zheng

Yang

et al. 2022

Adv Funct Materials

100

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Aqueous Zn-ion batteries have aroused much attention recently, yet challenges still exist in the lack of low-cost, highly stable electrolytes to tackle the serious side reactions at Zn anode-electrolyte interface. Herein, a ZnSO 4based low-cost aqueous electrolyte is demonstrated with a small amount of eco-friendly silk peptide as an efficient additive. Compared with silk sericin and fibroin, silk peptide with abundant strong polar groups (COOH and NH 2 ) suppresses the side reactions. Namely, silk peptide regulates the solvation structure of Zn 2+ to decrease coordinated active H 2 O and SO 4 2− , and tends to anchor on Zn anode surface for the isolation of contact H 2 O/SO 4 2− as well as electrostatic shielding, demonstrating synergistic solvation and interface regulating effect. Consequently, the excellent cycle life (3000 h) and Coulombic efficiency (99.7%) of Zn anodes are revealed in 2 m ZnSO 4 electrolyte with only 5 mg mL −1 of silk peptide (≈0.49 USD L −1 ), promising practical applications of reversible zinc-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Synergistic Solvation and Interface Regulations of Eco‐Friendly Silk Peptide Additive Enabling Stable Aqueous Zinc‐Ion Batteries

Wang

Zheng

Yang

et al. 2022

Adv Funct Materials

100

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“…Despite the above merits of aqueous Zn-based EES systems, their practical application is hampered by the electrochemical and thermodynamic instability of metallic zinc anodes [18][19][20]. To be specific, during zinc plating/stripping processes, the microscopic surface of zinc anodes changes continuously, thereby causing an inhomogeneous electric field (e.g., protuberance sites generally create a strong localized electrical field due to the "tip effect") [21].…”

Section: Introductionmentioning

confidence: 99%

Stable Zinc Anodes Enabled by Zincophilic Cu Nanowire Networks

et al. 2021

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Zn-based electrochemical energy storage (EES) systems have received tremendous attention in recent years, but their zinc anodes are seriously plagued by the issues of zinc dendrite and side reactions (e.g., corrosion and hydrogen evolution). Herein, we report a novel strategy of employing zincophilic Cu nanowire networks to stabilize zinc anodes from multiple aspects. According to experimental results, COMSOL simulation and density functional theory calculations, the Cu nanowire networks covering on zinc anode surface not only homogenize the surface electric field and Zn2+ concentration field, but also inhibit side reactions through their hydrophobic feature. Meanwhile, facets and edge sites of the Cu nanowires, especially the latter ones, are revealed to be highly zincophilic to induce uniform zinc nucleation/deposition. Consequently, the Cu nanowire networks-protected zinc anodes exhibit an ultralong cycle life of over 2800 h and also can continuously operate for hundreds of hours even at very large charge/discharge currents and areal capacities (e.g., 10 mA cm−2 and 5 mAh cm−2), remarkably superior to bare zinc anodes and most of currently reported zinc anodes, thereby enabling Zn-based EES devices to possess high capacity, 16,000-cycle lifespan and rapid charge/discharge ability. This work provides new thoughts to realize long-life and high-rate zinc anodes.

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“…The Zn nucleation tends to proceed in the high Zn 2+ concentration (i.e., high supersaturation) regions, and the Zn atoms will further deposit onto these nuclei, which eventually leads to the formation of “tips” and thus dendrites. [ 24 ] The dendrite formation is largely affected by both the current density and capacity. [ ] Under large current densities, the Zn deposition is significantly accelerated, and the growth of dendrite is promoted.…”

Section: Main Challenges Facing Zn Anodesmentioning

confidence: 99%

Surface and Interface Engineering of Zn Anodes in Aqueous Rechargeable Zn‐Ion Batteries

Zheng

Huang

Ming

et al. 2022

Small

114

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Rechargeable zinc-ion batteries (ZIBs) have shown great potential as an alternative to lithium-ion batteries. The ZIBs utilize Zn metal as the anode, which possesses many advantages such as low cost, high safety, eco-friendliness, and high capacity. However, on the other hand, the Zn anode also suffers from many issues, including dendritic growth, corrosion, and passivation. These issues are largely related to the surface and interface properties of the Zn anode. Many efforts have therefore been devoted to the modification of the Zn anode, aiming to eliminate the above-mentioned problems. This review gives a comprehensive summary on the mechanism behind these issues as well as the recent progress on Zn anode modification with focus on the strategies of surface and interface engineering, covering the design and application of both the Zn anode supports and surface protective layers, along with abundant examples. In addition, the promising research directions and perspective on these strategies are also presented.

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Anode for Zinc-Based Batteries: Challenges, Strategies, and Prospects

Abstract: Figure 7. (a) Behavior of bare zinc and Zn|In anodes in an aqueous ZnSO 4 electrolyte and (b) operando optical microscopy images of bare zinc and Zn|In anode in the aqueous ZnSO 4 electrolyte to characterize the gas evolution. Panels a and b reproduced with permission from ref 57.

Cited by 170 publications

References 161 publications

Synergistic Solvation and Interface Regulations of Eco‐Friendly Silk Peptide Additive Enabling Stable Aqueous Zinc‐Ion Batteries

Synergistic Solvation and Interface Regulations of Eco‐Friendly Silk Peptide Additive Enabling Stable Aqueous Zinc‐Ion Batteries

Stable Zinc Anodes Enabled by Zincophilic Cu Nanowire Networks

Surface and Interface Engineering of Zn Anodes in Aqueous Rechargeable Zn‐Ion Batteries

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