A polyamino acid with zincophilic chains enabling high-performance Zn anodes

Liu, Jiaxing; Song, Weihao; Wang, Yili; Wang, Shuaize; Zhang, Tianren; Cao, Yinliang; Zhang, Shuguo; Xu, Chunchuan; Shi, Yongzheng; Niu, Jin; Wang, Rui

doi:10.1039/d2ta05528g

Cited by 37 publications

(24 citation statements)

References 51 publications

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“…These results show that triazole is involved in the coordination or adsorb process with Zn 2+ . [ 69 ]…”

Section: Resultsmentioning

confidence: 99%

A Stable Triazole‐Based Covalent Gel for Long‐Term Cycling Zn Anode in Zinc‐Ion Batteries

Cui,

Tao,

et al. 2023

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In this work, a functional covalent gel material is developed to resolve the severe dendritic growth and hydrogen evolution reaction toward Zn/electrolyte interface in aqueous zinc‐ion batteries (ZIBs). A covalent gel layer with superior durability forms homogeneously on the surface of Zn foil. The covalent gel with triazole functional groups can uniformize the transport of Zn2+ due to the interactions between Zn2+ ions and the triazole groups in the covalent gel. As a consequence, the symmetrical battery with triazole covalent gel maintains stable Zn plating/stripping for over 3000 h at 1 mA cm−2 and 1 mAh cm−2, and the full cell combined with a V2O5 cathode operates steadily and continuously for at least 1800 cycles at 5 A g−1 with a capacity retention rate of 67.0%. This work provides a train of thought to develop stable covalent gels for the protection of zinc anode toward high‐performance ZIBs.

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“…These results show that triazole is involved in the coordination or adsorb process with Zn 2+ . [ 69 ]…”

Section: Resultsmentioning

confidence: 99%

A Stable Triazole‐Based Covalent Gel for Long‐Term Cycling Zn Anode in Zinc‐Ion Batteries

Cui,

Tao,

et al. 2023

Small

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“…These polar groups have good affinity for Zn 2+ ions, thereby inducing uniform nucleation. [163][164][165][166][167] Additives also can restrict the movement of water molecules by forming hydrogen bonds to protect the anode from being reached by water and inhibit the activity of water. [168] The use of a small amount of Et 2 O as an additive could be able to suppress the formation of dendrites on the anode during cycling (Figure 10f).…”

Section: Electrolyte Optimizationmentioning

confidence: 99%

Electrode/electrolyte interfacial engineering for aqueous Zn‐ion batteries

Tang

et al. 2023

Carbon Neutralization

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Aqueous Zn‐ion batteries (AZIBs) hold great promise for large‐scale energy storage applications due to their low cost, intrinsic safety, and high theoretical capacity. However, the delivery of stable electrode–electrolyte interface becomes the main challenge for developing high‐performance AZIBs with long cycle life and high capacity. On the cathode side, the dissolution of active materials, formation of byproducts, and unsatisfactory interfacial compatibility frequently occur. Meanwhile, the Zn metal anodes usually suffer from inevitable Zn dendrites and parasitic reactions. Both the electrode–electrolyte interface issues for the cathodes and anodes will finally result in poor electrochemistry reversibility and fast capacity decay. With this perspective, this review focuses on the key scientific issues occurred at the electrode interfaces, and also proposes corresponding interfacial optimization strategies, including surface modification and electrolyte optimization, aiming at providing guidelines for the design of high‐performance AZIBs based on the understanding of interface improvement and practical application considerations.

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“…Polyamino acids (PAA) were used as multifunctional electrolyte additives for modified zinc anode. The DFT calculations have showed that PAA has a unique long-chain structure, abundant nitrogen and oxygen functional groups and highly zincophilicity through preferential absorption by Wang et al [71] As a result, PAA can be tightly adsorbed on the surface of the Zn anode to construct a hydrophilic artificial coating. Four models were developed to study the interaction between the Zn foil and other components of the electrolyte, including PAA, AA, H 2 O and Zn ions.…”

Section: Adsorption Of Zincophilic Additives On the Surface Of Anodementioning

confidence: 99%

Zincophilic Design and the Electrode/Electrolyte Interface for Aqueous Zinc‐Ion Batteries: A Review

Zhao

Gao²,

Guo

et al. 2023

Batteries & Supercaps

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Aqueous zinc‐ion batteries (ZIBs) are limited in energy storage by the persistent Zn dendrites, which is a major bottleneck preventing the commercial application of rechargeable aqueous zinc‐ion batteries. The dendritic problems associated with Zn metal anodes can lead to rapid performance degradation, failure and even safety risks of the battery. Zincophilicity of the electrode/electrolyte interface is critical to the stable and safe operation for aqueous ZIBs. In this review, we discuss that zincophilicity can be regulated by tuning the chemical interactions of material surface energy with zinc metal, emphasizing the importance of zincophilic design for improving the electrochemical performance of zinc electrodes. Advances in optimization strategies for the zincophilic zinc metal anode/electrolyte interface are summarized. Challenges and prospects for further exploration and balance of zincophilicity of the anode/electrolyte interface are presented, which are expected to promote in‐depth research and practical applications of advanced aqueous zinc ions.

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A polyamino acid with zincophilic chains enabling high-performance Zn anodes

Abstract: Aqueous zinc metal battery (AZMB) has been regarded as a potential candidate of lithium-ion batteries by virtue of its high energy, low cost, and high safety. However, the practical application...

Cited by 37 publications

References 51 publications

A Stable Triazole‐Based Covalent Gel for Long‐Term Cycling Zn Anode in Zinc‐Ion Batteries

A Stable Triazole‐Based Covalent Gel for Long‐Term Cycling Zn Anode in Zinc‐Ion Batteries

Electrode/electrolyte interfacial engineering for aqueous Zn‐ion batteries

Zincophilic Design and the Electrode/Electrolyte Interface for Aqueous Zinc‐Ion Batteries: A Review

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