Reversible Zinc Electrodeposition at −60 °C Using a Deep Eutectic Electrolyte for Low-Temperature Zinc Metal Batteries

Hawkins, Brendan E.; Schoetz, Theresa; Gordon, Leo W.; KT, Surabh; Wang, Jonah; Messinger, Robert J.

doi:10.1021/acs.jpclett.3c00150

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…This also greatly limits the commercial use of AZIBs. 16,17 If we can solve the problem of low performance at the same time, and also improve the common problems at room temperature, it will be a breakthrough in the fields of electric vehicles, polar exploration, satellite communication, and so on. 18 At present, many strategies have been proposed to improve the electrochemical performance and cyclic reversibility of AZIBs, including anodic modification, cathodic active substance modification, and electrolytic system optimization.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, most current studies focusing on low temperature can only retain a small specific capacity. This also greatly limits the commercial use of AZIBs. , If we can solve the problem of low performance at the same time, and also improve the common problems at room temperature, it will be a breakthrough in the fields of electric vehicles, polar exploration, satellite communication, and so on …”

Section: Introductionmentioning

confidence: 99%

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Low-Temperature and High-Performance Vanadium-Based Aqueous Zinc-Ion Batteries

Jin,

Ye,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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Aqueous zinc-ion batteries have attracted attention due to their low cost and high safety. Unfortunately, dendrite growth, hydrogen evolution reactions, cathodic dissolution, and other problems are more serious; not only that, but also the cathodic and anodic materials' lattices contract when the temperature drops, and charge transfer and solid phase diffusion become slow, seriously aggravating dendrite growth. At present, there are few studies on the low-temperature system, and studies on retaining high specific capacity are even more rare. Herein, ethylene glycol (EG) and manganese sulfate (MSO) are selected as additives, and the manganese vanadate (MVO) cathode is used to find a high-performance solution at low temperature. MVO can provide higher specific capacity and better structural stability than MnO 2 to adapt to a low-temperature environment. At the same time, Mn 2+ in MSO can produce a cationic shield covering the initial zinc tip at an appropriate concentration to avoid the tip effect and inhibit the dissolution of MVO. EG can not only reduce the freezing point of the electrolyte but also promote the desolvation of [Zn(H 2 O) 6 ] 2+ . The synergistic effect of the three elements prevents the dissolution equilibrium of Mn 2+ in MVO from fluctuating greatly due to the change of temperature. Therefore, when we use EG@0.2 M MnSO 4 + 2 M ZnSO 4 (EG + 0.2Mn/2ZSO) electrolyte at −30 °C, the Zn||Zn batteries which used this type of electrolyte can remain 350 h at 1 mA cm −2 without failure. The Zn||Cu batteries can retain 100% Coulombic efficiency after more than 2000 cycles at 0.2 mA cm −2 . The Zn||MVO battery can reach 231.13 mA h g −1 at its first cycle, and the capacity retention rate is still above 85% after 1000 cycles, which is higher than that of the existing low-temperature research system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-Temperature and High-Performance Vanadium-Based Aqueous Zinc-Ion Batteries

Jin,

Ye,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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Design and Structure of Electrolytes for All‐Weather Aqueous Zinc Batteries

Xiong,

Guo,

Wang

2024

Adv Funct Materials

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Rechargeable aqueous zinc batteries (AZBs) utilizing water‐borne electrolytes are intrinsically safe electrochemical devices that are promising in next‐generation energy storage. Such application requires adaptivity to global climate, especially at grid‐scale, thus their stability of electrochemical performance at varying temperatures is critical. Many essential properties of AZBs, i.e., ion transfer, redox kinetics, etc., are largely governed by the aqueous electrolytes in the batteries because of the relatively limited stable phase temperature of water. This limitation is extremely vital in cold regions since charging and discharging become more difficult at the sub‐zero range due to water freezing. Despite the development of various electrolyte strategies in recent years, comprehensive reviews focusing on this topic remain limited. This research reviews the diverse reasons underneath the failure of AZBs at extreme temperatures and provides a thorough analysis of possible resolutions from an electrolyte perspective. It starts with the challenges faced by AZBs at both high and low temperatures concerning the electrolytes. Different strategies addressing these challenges are discussed, providing insights into aqueous batteries under extreme temperature conditions. Finally, the review concludes with a summary and outlook on the design and structure of electrolytes for all‐weather AZBs, integrating innovative strategies from both aqueous and non‐aqueous battery systems.

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Zinc Chemistries of Hybrid Electrolytes in Zinc Metal Batteries: From Solvent Structure to Interfaces

Chen,

Wang,

Wang

et al. 2024

Advanced Materials

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Along with the booming research on zinc metal batteries (ZMBs) in recent years, operational issues originated from inferior interfacial reversibility have become inevitable. Presently, single‐component electrolytes represented by aqueous solution, “water‐in‐salt,” solid, eutectic, ionic liquids, hydrogel, or organic solvent system are hard to undertake independently the task of guiding the practical application of ZMBs due to their specific limitations. The hybrid electrolytes modulate microscopic interaction mode between Zn2+ and other ions/molecules, integrating vantage of respective electrolyte systems. They even demonstrate original Zn2+ mobility pattern or interfacial chemistries mechanism distinct from single‐component electrolytes, providing considerable opportunities for solving electromigration and interfacial problems in ZMBs. Therefore, it is urgent to comprehensively summarize the zinc chemistries principles, characteristics, and applications of various hybrid electrolytes employed in ZMBs. This review begins with elucidating the chemical bonding mode of Zn2+ and interfacial physicochemical theory, and then systematically elaborates the microscopic solvent structure, Zn2+ migration forms, physicochemical properties, and the zinc chemistries mechanisms at the anode/cathode interfaces in each type of hybrid electrolytes. Among of which, the scotoma and amelioration strategies for the current hybrid electrolytes are actively exposited, expecting to provide referenceable insights for further progress of future high‐quality ZMBs.

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Reversible Zinc Electrodeposition at −60 °C Using a Deep Eutectic Electrolyte for Low-Temperature Zinc Metal Batteries

Cited by 10 publications

References 43 publications

Low-Temperature and High-Performance Vanadium-Based Aqueous Zinc-Ion Batteries

Low-Temperature and High-Performance Vanadium-Based Aqueous Zinc-Ion Batteries

Design and Structure of Electrolytes for All‐Weather Aqueous Zinc Batteries

Zinc Chemistries of Hybrid Electrolytes in Zinc Metal Batteries: From Solvent Structure to Interfaces

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