Toward stable and highly reversible zinc anodes for aqueous batteries via electrolyte engineering

Li, Ang; Li, Jiayi; He, Yurong; Wu, Maochun

doi:10.1016/j.jechem.2023.04.006

Cited by 29 publications

(5 citation statements)

References 167 publications

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“…The hydrolysis of Zn 2+ is a unique phenomenon for aqueous Zn-salt electrolytes. However, it has been overlooked in the past and only begun to draw attention recently. − …”

Section: Resultsmentioning

confidence: 99%

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

Sun,

Yang,

Billings

et al. 2024

Chem. Mater.

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The unique technical merits of aqueous zinc-ion batteries (AZIBs) have attracted significant interest in the development of grid-scale energy storage technologies in the past decade. However, the development of AZIBs is severely hampered by the poor cycle stability, which exclusively stems from the electrolyte/electrode interactions. To address this issue, knowledge of the bulk properties of electrolytes, a pivotal component of AZIBs, is needed. Unfortunately, there still exists a significant gap in the data and understanding of these properties. This study investigates the concentration-dependent bulk properties of Zn-salt solution electrolytes through a combined experimental and theoretical approach. Key bulk properties such as pH, conductivity, water activity, hydrogen bonding, and electrochemical stability of five Zn-salt solutions are systematically studied as a function of concentration through a suite of experiments and theoretically interpreted by quantum chemistry calculations, molecular dynamics, and a tailored solvation model considering multispecies ion− ion and ion−molecule interactions. The model-produced theoretical results agree well with the experimental data. The revealed theoretical insights offer valuable fundamental guidance for future electrolyte discovery and understanding/mitigating degradation mechanisms in AZIBs.

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“…The hydrolysis of Zn 2+ is a unique phenomenon for aqueous Zn-salt electrolytes. However, it has been overlooked in the past and only begun to draw attention recently. − …”

Section: Resultsmentioning

confidence: 99%

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

Sun,

Yang,

Billings

et al. 2024

Chem. Mater.

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“…[ 142 ] Among them, the appearance of HER is directly related to the thermodynamic instability of Zn in a water medium, and it is a strong competitive reaction for reducing active Zn. [ 143 ] Especially in alkaline electrolytes, the higher the reduction potential, the easier the reduction. The standard reduction potential of Zn/ZnO redox pairs is −1.26 V (vs SHE), and HER potential is −0.83 V (vs SHE).…”

Section: Application Of Cofs On Metal Anodesmentioning

confidence: 99%

A Review on Covalent Organic Frameworks as Artificial Interface Layers for Li and Zn Metal Anodes in Rechargeable Batteries

Zhao,

Feng,

2023

Advanced Science

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Li and Zn metals are considered promising negative electrode materials for the next generation of rechargeable metal batteries because of their non‐toxicity and high theoretical capacity. However, the uneven deposition of metal ions (Li+, Zn2+) and the uncontrolled growth of dendrites result in poor electrochemical stability, unsatisfactory cycle life, and rapid capacity decay of batteries assembled with Li and Zn electrodes. Owing to the unique internal directional channels and abundant redox active sites of covalent organic frameworks (COFs), they can be used to promote uniform deposition of metal ions during stripping/electroplating through interface modification strategies, thereby inhibiting dendrite growth. COFs provide a new perspective in addressing the challenges faced by the anodes of Li metal batteries and Zn ion batteries. This article discusses the stability and types of COFs, and summarizes some novel COF synthesis methods. Additionally, it reviews the latest progress and optimization methods of using COFs for metal anodes to improve battery performance. Finally, the main challenges faced in these areas are discussed. This review will inspire future research on metal anodes in rechargeable batteries.

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“…15 Nevertheless, the elevated salt concentration increases the expense of the battery and brings about additional environmental considerations, which are not conducive to practical applications. 36 With regard to cost considerations, starch has been added into Zn–I 2 batteries. 20,37,38 Zhao et al developed a starch gel electrolyte for Zn–I 2 batteries to inhibit the migration effect of I 3 − attributable to the starch binding with I 5 − and I 3 − .…”

Section: Introductionmentioning

confidence: 99%

Restraining the shuttle effect of polyiodides and modulating the deposition of zinc ions to enhance the cycle lifespan of aqueous Zn–I₂ batteries

Yue,

Wan,

et al. 2024

Chem. Sci.

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Toward stable and highly reversible zinc anodes for aqueous batteries via electrolyte engineering

Cited by 29 publications

References 167 publications

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

A Review on Covalent Organic Frameworks as Artificial Interface Layers for Li and Zn Metal Anodes in Rechargeable Batteries

Restraining the shuttle effect of polyiodides and modulating the deposition of zinc ions to enhance the cycle lifespan of aqueous Zn–I₂ batteries

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Toward stable and highly reversible zinc anodes for aqueous batteries via electrolyte engineering

Cited by 29 publications

References 167 publications

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

Understanding the Critical Bulk Properties of Zn-Salt Solution Electrolytes for Aqueous Zn-Ion Batteries

A Review on Covalent Organic Frameworks as Artificial Interface Layers for Li and Zn Metal Anodes in Rechargeable Batteries

Restraining the shuttle effect of polyiodides and modulating the deposition of zinc ions to enhance the cycle lifespan of aqueous Zn–I2 batteries

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Product

Resources

About

Restraining the shuttle effect of polyiodides and modulating the deposition of zinc ions to enhance the cycle lifespan of aqueous Zn–I₂ batteries