Stable cycling of Prussian blue/Zn battery in a nonflammable aqueous/organic hybrid electrolyte

Xu, Zheng; Xiang, Bo; Liu, Chunli; Sun, Yunpo; Xie, Jian; Tu, Jian; Xu, Xiongwen; Zhao, Xinbing

doi:10.1039/d1ra05369h

Cited by 8 publications

(5 citation statements)

References 40 publications

(40 reference statements)

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“…[48,72,73] On the basis of maintaining the original advantages of individual components and relativity high ionic conductivity, this strategy has the possibility of improving the interface contact between electrodes and electrolytes. [74][75][76][77] In addition, the selection scope of solvents can be significantly broadened and the obviously expanded ESW can meet the requirements of more electrode materials. Unlike the low-temperature organic electrolytes using a small amount and efficient additive, hybrid electrolytes generally employ a certain amount of organic cosolvents to present an obvious effect.…”

Section: Solvent Optimizationmentioning

confidence: 99%

Design Strategies and Recent Advancements for Low‐Temperature Aqueous Rechargeable Energy Storage

Sun

Liu

et al. 2023

Advanced Energy Materials

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Therefore, it is increasingly urgent to develop novel unfrozen aqueous electrolytes to balance electrochemical performance and demand under lowtemperature. Hence, we comprehensively discuss the anti-freezing mechanisms and the composition of low-temperature electrolytes, as well as summarizing recently related reports in a timeline of milestones in the development process of low-temperature ARES (Figure 1a). Inspired by those reported works, how to modulate and optimize the component of aqueous electrolytes to remain unfrozen under ultralow temperature with ideal ionic conductivity is of particular importance to enlarge their application scope.As the ionic transport mediums, electrolytes play a crucial role in ionic migration between cathode and anode electrodes during the electrochemical processes, which are generally composed of appropriate salts and solvents. [12,13] Compared with most frequently-used organic solvents, the high solidification point (0 °C, 1 atm) of pure water as the main solvent for aqueous electrolytes primarily leads to inferior ion transfer under low temperature, restricting the broad application of ARES. [11,14] Thus, understanding the root cause of the abnormal freezing point for water among chalcogen hydrides is an essential precondition to develop lowtemperature aqueous electrolytes. The most apparent difference in various pure chalcogen hydrides is the unique existence of hydrogen bonds (H-bonds) in the pure water system. [15,16] H-bond is the essence of the coordinate bond between lonepair electrons in the strongly electronegativity N, O, or F atoms and hydrogen atom with partial positive charge rather than the shared electron pair effect (Figure 1b). From the chemical composition, the polar water molecules containing two atoms of hydrogen and one atom of oxygen in per chemical formula are H-bonds acceptors and donors at the same time, because the oxygen side with two lone-pair electrons has negative charge and the hydrogen side has positive charge, which provide the condition for H-bonds formation. Subsequently, the viscosity of liquid water increases and H-bonds restrict the vibration of water molecules, boosting the formation of longrange ordered crystalline structure under subzero temperature. Theoretically, one water molecule can effectively interact with up to four nearest neighbor water molecules by H-bonds interaction to generate the self-associated water clusters, which has the short-range ordering in the form of tetrahedral H-bonds within the water clusters due to the sp 3 hybridization of O Aqueous rechargeable energy storage (ARES) has received tremendous attention in recent years due to its intrinsic merits of low cost, high safety, and environmental friendliness. However, the relatively higher freezing point of conventional aqueous electrolytes results in sluggish kinetics and inferior ion transport efficiency under low temperature, severely restricting their further development and practical applications. In order to deal with the existing issues, the design principles ...

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Section: Solvent Optimizationmentioning

confidence: 99%

Design Strategies and Recent Advancements for Low‐Temperature Aqueous Rechargeable Energy Storage

Sun

Liu

et al. 2023

Advanced Energy Materials

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“…Although rechargeable aqueous batteries are attracting increasing attentions due to their low cost, high safety, environmentally friendly nature, and improved rate performance, the "free water" (the term "free water" indicates water molecules interacting solely with other water molecules) [139] molecules in aqueous electrolytes strongly limit the electrochemical stability window of the electrolyte and trigger multiple side reactions, thus affecting cell performance upon cycling. In order to suppress the activity of "free water" molecules and expand the electrochemical stability window, novel electrolytes and components have been proposed, including high concentrated electrolytes or "water-in-salt/gel" electrolytes, [78,82,87,95,97,105,107,140] hybrid electrolytes, [65,66,74,75,77,78,[81][82][83]85,87,95,107,141,142] solid polymer electrolyte, [103] and additives, [84,86,88,89] to improve the electrochemical performances of AZIBs. D. Kim et al [140] reported that the cycling performance of ZnHCF in concentrated electrolyte (3 M Zn(NO 3 ) 2 ) was superior to that observed in the diluted system (1 M Zn(NO 3 ) 2 ), as a consequence of the decrease in the hydration number and radius of the zinc ions in the concentrated electrolyte.…”

Section: Electrolyte Optimizationmentioning

confidence: 99%

“…It was observed that VC not only plays an important role in extending the electrochemical stability window, but also prevents the dissolution of the cathode material. Indeed, the aqueous FeHCF/Zn cell exhibited a good cycling stability with 60 % capacity retention after 4000 cycles when cycled at 10 C. Xu et al [86] proposed a hybrid aqueous electrolyte with mixed solvent of water and acetonitrile (ACN). Since ACN can form strong hydrogen-bonding interaction with water, an extension of the electrochemical windows was observed, as well as a decrease in side-reactions of the aqueous electrolyte.…”

Section: Electrolyte Optimizationmentioning

confidence: 99%

A Structural Perspective on Prussian Blue Analogues for Aqueous Zinc‐Ion Batteries

Li,

Maisuradze,

Sciacca

et al. 2023

Batteries & Supercaps

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Aqueous zinc‐ion batteries (AZIBs), have been identified as one of the most promising aqueous rechargeable metal‐ion batteries (ARMIBs) for grid scale electrochemical energy storage application, and as such have received much attention by virtue of their unique properties including the high abundance of metallic zinc resources, their intrinsic safety, and cost effectiveness. Among the cathode materials used in AZIBs, Prussian Blue Analogues (PBAs) represent the most promising active materials in view of their improved cyclability and rate performance. Here we provide a comprehensive review on recent progress on AZIBs obtained using PBAs cathodes with a particular focus on the present understanding of the structure‐property correlation of different PBAs, which in turn guides further developments of improved cathode materials and optimization strategies to ensure an extended cyclability and capacity retention.

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“…The schematics within the figure are reprinted with permission from refs. [10,12–16] Copyright 2020, Royal Society of Chemistry, Copyright 2022, Elsevier, Copyright 2015, American Association for the Advancement of Science, Copyright 2020, Shanghai Jiao Tong Univ Press, Copyright 2021, Royal Society of Chemistry.…”

Section: Introductionmentioning

confidence: 99%

Challenges and Strategies on Interphasial Regulation for Aqueous Rechargeable Batteries

Geng,

Hou,

et al. 2024

Advanced Energy Materials

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The practical application of aqueous rechargeable batteries faces several challenges due to the limited stability window of electrolytes and parasitic side reactions, such as corrosion, passivation, gas evolution, and co‐intercalations. The solid electrolyte interphase (SEI) formed at the electrode/electrolyte interface plays a critical role in determining interfacial properties and battery performance. Efforts are being made to develop effective SEIs, functionalize interphase layers, and explore various aqueous hybrid electrolytes that facilitate SEI formation. This review highlights the role of interphasial structures in aqueous batteries. First, common issues encountered by aqueous batteries and specific characteristics of aqueous lithium‐ion, sodium‐ion, zinc‐ion, and aluminum‐ion batteries are outlined. Then the tactics used to improve cycle stability of aqueous batteries are introduced and compared and the working principles and key parameters from the context of interphasial modification are discussed. Finally, constructive insights and suggestions for developing high‐performance batteries are offered, with a focus on SEI formation and interphase layer design.

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Stable cycling of Prussian blue/Zn battery in a nonflammable aqueous/organic hybrid electrolyte

Abstract: Aqueous FeHCF/Zn battery with a hybrid electrolyte exhibits ultralong cycle life with 51.4% capacity retention after 19 000 cycles.

Cited by 8 publications

References 40 publications

Design Strategies and Recent Advancements for Low‐Temperature Aqueous Rechargeable Energy Storage

Design Strategies and Recent Advancements for Low‐Temperature Aqueous Rechargeable Energy Storage

A Structural Perspective on Prussian Blue Analogues for Aqueous Zinc‐Ion Batteries

Challenges and Strategies on Interphasial Regulation for Aqueous Rechargeable Batteries

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