Cover Picture: Discovering the Intrinsic Causes of Dendrite Formation in Zinc Metal Anodes: Lattice Defects and Residual Stress (Angew. Chem. Int. Ed. 16/2023)

Xie, Chunlin; Liu, Shengfang; Yang, Zefang; Ji, Huimin; Zhou, Shuhan; Wu, Hao; Hu, Chao; Tang, Yougen; Ji, Xiaobo; Zhang, Qi; Wang, Haiyan

doi:10.1002/anie.202303147

Cited by 16 publications

(21 citation statements)

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“…Compared to ZS, the Nyquist plot of ZSFeCN exhibits a smaller semicircular diameter at the high‐frequency region and a larger slope at low‐frequency region, suggesting an increased ion conductivity and diffusion rate of ZSFeCN, which account for the higher IDC of Zn 2+ and reduced voltage hysteresis. [ 22 ] Moreover, the electrochemical active area of electrodes is estimated with the correlation between the current densities and sweep rates at 0.02 V (vs saturated calomel electrode) in Figure S14 (Supporting Information). Noticeably, the ZSFeCN exhibits a larger slope than the ZS, implying increase available active sites for electrochemical reaction.…”

Section: Resultsmentioning

confidence: 99%

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode

Zhou,

Li,

Zeng

et al. 2023

Advanced Science

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The inferior capacity and cyclic durability of V2O5 caused by inadequate active sites and sluggish kinetics are the main problems to encumber the widespread industrial applications of vanadium‐zinc batteries (VZBs). Herein, a cooperative redox chemistry (CRC) as “electron carrier” is proposed to facilitate the electron‐transfer by capturing/providing electrons for the redox of V2O5. The increased oxygen vacancies in V2O5 provoked in situ by CRC offers numerous Zn2+ storage sites and ion‐diffusion paths and reduces the electrostatic interactions between vanadium‐based cathode and intercalated Zn2+, which enhance Zn2+ storage capability and structural stability. The feasibility of this strategy is fully verified by some CRCs. Noticeably, VZB with [Fe(CN)6]3−/[Fe(CN)6]4− as CRC displays conspicuous specific capacity (433.3 mAh g−1), ≈100% coulombic efficiency and superb cyclability (≈3500 cycles without capacity attenuation). Also, the mechanism and selection criteria of CRC are specifically unraveled in this work, which provides insightful perspectives for the development of high‐efficiency energy‐storage devices.

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Section: Resultsmentioning

confidence: 99%

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode

Zhou,

Li,

Zeng

et al. 2023

Advanced Science

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“…In addition, other factors such as the concentration polarization, current density, cathodic overpotential, [ 21 ] charge carrier concentration, [ 22 ] temperature, [ 23 ] residual stress, etc. [ 24 ] also have great impacts on the dendrites formation.…”

Section: Dilemma Facing the Zn Metal Anodementioning

confidence: 99%

“…What's more, obtaining a single‐oriented Zn is often more difficult and an in‐depth study of the Zn epitaxial growth behavior is necessary. Xie et.al [ 24 ] discovered that more microscopic crystal structures such as lattice defects and stresses in zinc crystals has closely related to dendrites formation. They proposed an annealing reconstruction strategy to release residual stresses and promote grain growth, reducing disordered crystal structures.…”

Section: Regulation Of Zn Metalmentioning

confidence: 99%

Recent Progress on Zn Anodes for Advanced Aqueous Zinc‐Ion Batteries

Nie

Wang

et al. 2023

Advanced Energy Materials

196

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Aqueous Zn‐ion batteries (AZIBs) have attracted much attention due to their excellent safety, cost‐effectiveness, and eco‐friendliness thereby being considered as one of the most promising candidates for large‐scale energy storage. Zn metal anodes with a high gravimetric/volumetric capacity are indispensable for advanced AZIBs. However, pristine Zn metal anodes encounter severe challenges in achieving adequate cycling stability, including dendrite growth, hydrogen evolution reaction, self‐corrosion, and by‐product formation. Because all these reactions are closely related to the electrolyte/Zn interface, the subtle interface engineering is important. Many strategies targeted to the interface engineering have been developed. In this review, a timely update on these strategies and perspectives are summarized, especially focusing on the controllable synthesis of Zn, Zn surface engineering, electrolyte formulation, and separator design. Furthermore, the corresponding internal principles of these strategies are clarified, which is helpful to help seek for new strategies. Finally, the challenges and perspectives for the future development of practical AZIBs are discussed, including the conducting of in advanced in situ testing, unification of battery models, some boundary issues, etc. This review is expected to guide the future development and provi beacon light direction for aqueous zinc ion batteries.

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“…Electrochemical energy storage systems that are economical, secure, and ecologically benign are crucial for the efficient utilization of renewable energy. Owing to the non-toxic and inflammable properties of aqueous electrolytes, aqueous batteries are among the best options for low-cost, large-scale energy storage applications., [1][2][3][4][5][6] Among the variety of promising aqueous battery systems (Li + , [7,8] Na + , [9,10] K + , [11,12] Ca 2 + , [13] Mg 2 + , [14] Zn 2 + , [15][16][17][18][19] NH 4 + , [20,21] etc. ), aqueous zinc ion batteries (ZIBs) have received a lot of interest in recent years benefiting from high specific capacities of the zinc metal anode (820 mAh g À 1 and 5845 mAh cm À 3 ), relatively low potential (À 0.763 V vs. SHE, in mild or acidic electrolytes) and low cost.…”

Section: Introductionmentioning

confidence: 99%

Maximizing Electrostatic Polarity of Non‐Sacrificial Electrolyte Additives Enables Stable Zinc‐Metal Anodes for Aqueous Batteries

Zhou

Yang

et al. 2023

Angewandte Chemie

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Although additives are widely used in aqueous electrolytes to inhibit the formation of dendrites and hydrogen evolution reactions on Zn anodes, there is a lack of rational design principles and systematic mechanistic studies on how to select a suitable additive to regulate reversible Zn plating/stripping chemistry. Here, using saccharides as the representatives, we reveal that the electrostatic polarity of non‐sacrificial additives is a critical descriptor for their ability to stabilize Zn anodes. Non‐sacrificial additives are found to continuously modulate the solvation structure of Zn ions and form a molecular adsorption layer (MAL) for uniform Zn deposition, avoiding the thick solid electrolyte interphase layer due to the decomposition of sacrificial additives. A high electrostatic polarity renders sucrose the best hydrated Zn2+ desolvation ability and facilitates the MAL formation, resulting in the best cycling stability with a long‐term reversible plating/stripping cycle life of thousands of hours. This study provides theoretical guidance for the screening of optimal additives for high‐performance ZIBs.

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Cover Picture: Discovering the Intrinsic Causes of Dendrite Formation in Zinc Metal Anodes: Lattice Defects and Residual Stress (Angew. Chem. Int. Ed. 16/2023)

Cited by 16 publications

References 0 publications

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode

Recent Progress on Zn Anodes for Advanced Aqueous Zinc‐Ion Batteries

Maximizing Electrostatic Polarity of Non‐Sacrificial Electrolyte Additives Enables Stable Zinc‐Metal Anodes for Aqueous Batteries

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Cover Picture: Discovering the Intrinsic Causes of Dendrite Formation in Zinc Metal Anodes: Lattice Defects and Residual Stress (Angew. Chem. Int. Ed. 16/2023)

Cited by 16 publications

References 0 publications

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn2+ Storage of Vanadium Oxide Cathode

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn2+ Storage of Vanadium Oxide Cathode

Recent Progress on Zn Anodes for Advanced Aqueous Zinc‐Ion Batteries

Maximizing Electrostatic Polarity of Non‐Sacrificial Electrolyte Additives Enables Stable Zinc‐Metal Anodes for Aqueous Batteries

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Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode

Unraveling the Mechanism of Cooperative Redox Chemistry in High‐Efficient Zn²⁺ Storage of Vanadium Oxide Cathode