Constructing a Super‐Saturated Electrolyte Front Surface for Stable Rechargeable Aqueous Zinc Batteries

Yang, Huijun; Chang, Zhi; Qiao, Yu; Deng, Han; Mu, Xiaowei; He, Ping; Zhou, Haoshen

doi:10.1002/ange.202001844

Cited by 445 publications

(35 citation statements)

References 54 publications

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“…Also, the high concentration electrolyte can decrease the activity of ionizable free water and inhibit corrosion and passivation of anode. However, both the organic and high concentration electrolytes are expensive, which is contradictory to low‐cost large‐scale ESS 90 . The compromised strategies are to construct a composite electrolyte system composed of a trace amount of supersaturated electrolyte on the surface of zinc anode and salt‐in‐water electrolyte close to cathode, which not only alleviates the corrosion and passivation caused by water but also obtains a moderate cost. Integrated design for the practical batteries.…”

Section: Discussionmentioning

confidence: 99%

Issues and rational design of aqueous electrolyte for Zn‐ion batteries

Zhang

Yang

et al. 2021

SusMat

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Aqueous Zn‐ion batteries (AZIBs) are regarded as a promising alternative to the widely used lithium‐ion batteries in large‐scale energy storage systems. The researches on the development of novel aqueous electrolyte to improve battery performance have also attracted great interest since the electrolyte is a key component for Zn2+ migration between cathode and anode. Herein, we briefly summarized and illuminated the recent development tendency of aqueous electrolyte for AZIBs, then deeply analyzed its existing issues (water decomposition, cathode dissolution, corrosion and passivation, and dendrite growth) and discussed the corresponding optimization strategies (pH regulation, concentrated salt solution, electrolyte composition design, and functional additives). The internal mechanisms of these strategies were further revealed and the relationships between issues and solutions were clarified, which could guide the future development of aqueous electrolytes for AZIBs.

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Section: Discussionmentioning

confidence: 99%

Issues and rational design of aqueous electrolyte for Zn‐ion batteries

Zhang

Yang

et al. 2021

SusMat

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“…Except for porosity and high surface area, they are characterized by tunable porosity, ultra-low density, simple synthesis routs and hybrid features [ 15 ]. Due to their properties, MOFs found many fields of applications, such as electrochemical application as a material for electrode construction for supercapacitors, modification of electrodes surface [ 16 ] or Lithium battery separators [ 17 ]. Other common fields of MOF application are gas absorption, drug delivery, selective luminescence sensing [ 18 ], catalysis and finally, metals [ 19 ] and dye adsorption.…”

Section: Introductionmentioning

confidence: 99%

Carbonized Lanthanum-Based Metal-Organic Framework with Parallel Arranged Channels for Azo-Dye Adsorption

2020

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In this contribution, the synthesis of the metal−organic framework (MOF) based on lanthanum that exhibits trigonal prism shape is presented. The length of a single side of this structure ranges from 2 to 10 μm. The carbonized lanthanum-based organic framework (CMOF–La) maintained the original shape. However, the lanthanum oxide was reshaped in the form of rods during the carbonization. It resulted in the creation of parallel arranged channels. The unique structure of the carbonized structure motivated us to reveal its adsorption performance. Therefore, the adsorption kinetics of acid red 18 onto a carbonized metal−organic framework were conducted. Various physicochemical parameters such as initial dye concentration and pH of dye solution were investigated in an adsorption process. The adsorption was found to decrease with an increase in initial dye concentration. In addition, the increase in adsorption capacity was noticed when the solution was changed to basic. Optimal conditions were obtained at a low pH. Kinetic adsorption data were analyzed using the pseudo-first-order kinetic model, the pseudo-second-order kinetic model and the intraparticle diffusion model. The adsorption kinetics were well fitted using a pseudo-second-order kinetic model. It was found that the adsorption of anionic dye onto CMOF–La occurs by hydrophobic interactions between carbonized metal-organic framework and acid red 18.

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“…A suitable artificial coating layer can construct a stable electrode/electrolyte interface to restrict the contact between free water molecules and Zn anodes, thus constraining parasitic reactions. Yang et al 98 proposed a super-saturated electrolyte front surface by a MOF coating. This nonconductive layer on the Zn surface could regulate the solvation structure before Zn 2+ reduction ( Figure 7F).…”

Section: Artificial Coating Barriermentioning

confidence: 99%

Issues and solutions toward zinc anode in aqueous zinc‐ion batteries: A mini review

et al. 2020

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Aqueous zinc-ion batteries (ZIBs) have been intensively investigated as potential energy storage devices on account of their low cost, environmental benignity, and intrinsically safe merits. With the exploitation of highperformance cathode materials, electrolyte systems, and in-depth mechanism investigation, the electrochemical performances of ZIBs have been greatly enhanced. However, there are still some challenges that need to be overcome before its commercialization. Among them, the obstinate dendrites, corrosion, and hydrogen evolution reaction (HER) on Zn anodes are critical issues that severely limit the practical applications of ZIBs. To address these issues, various strategies have been proposed, and tremendous progress has been achieved in the past few years. In this article, we analyze the origins and effects of the dendrites, corrosion, and HER on Zn anodes in neutral and mildly acid aqueous solutions at first. And then, a scientific understanding of the fundamental design principles and strategies to suppress these problems are emphasized. Apart from these, this article also puts forward some requirements for the practical applications of Zn anodes as well as several cost-effectivemodifying strategies. Finally, perspectives on the future development of Zn anodes in aqueous solutions are also briefly anticipated. This article provides pertinent insights into the challenges on anodes for the development of highperformance ZIBs, which will greatly contribute to their practical applications. K E Y W O R D S corrosion, hydrogen evolution reaction, Zn anode, Zn dendrites 1 | INTRODUCTION As a result of the ongoing crisis in the depletion of conventional fossil fuels, renewable clean energy sources, such as solar energy, wind energy, hydropower, geothermal, and nuclear energy, are rapidly developing. 1,2 Nevertheless, it remains an extreme challenge to efficiently store the energy generated by those renewable

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Constructing a Super‐Saturated Electrolyte Front Surface for Stable Rechargeable Aqueous Zinc Batteries

Cited by 445 publications

References 54 publications

Issues and rational design of aqueous electrolyte for Zn‐ion batteries

Issues and rational design of aqueous electrolyte for Zn‐ion batteries

Carbonized Lanthanum-Based Metal-Organic Framework with Parallel Arranged Channels for Azo-Dye Adsorption

Issues and solutions toward zinc anode in aqueous zinc‐ion batteries: A mini review

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