Tailoring desolvation strategies for aqueous zinc-ion batteries

Ma, Wenhao; Wang, Sunyufei; Wu, Xianwen; Liu, Wenwen; Yang, Fan; Liu, Shude; Jun, Seong Chan; Dai, Lei; He, Zhangxing; Zhang, Qiaobao

doi:10.1039/d4ee00313f

Cited by 39 publications

(2 citation statements)

References 127 publications

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“…[1][2][3][4] However, despite these advantages, the commercialization of ZIBs is still impeded by challenges related to uncontrolled Zn dendrite formation and the occurrence of notorious side reactions at the electrode/ electrolyte interface. [5][6][7][8] Addressing these issues is crucial for unlocking the full potential of ZIBs and paving the way for their successful implementation in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Screening metal cation additives driven by differential capacitance for Zn batteries

Hu,

Zhang,

et al. 2024

Energy Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Screening metal cation additives driven by differential capacitance for Zn batteries

Hu,

Zhang,

et al. 2024

Energy Environ. Sci.

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“…Aqueous rechargeable batteries, including Zn-based batteries and redox flow batteries, have attracted much attention due to their high safety and achievable low cost, − and are regarded as one of the most reliable solutions for electrochemical energy storage. However, overcoming the bottlenecks in energy density, lifetime and safety requires an in-depth understanding of the complex ion transport and reaction processes within the battery.…”

Section: Introductionmentioning

confidence: 99%

In Situ Visualization of Ion Transport Processes in Aqueous Batteries

Chen,

Li,

Lian

et al. 2024

ACS Appl. Mater. Interfaces

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Aqueous rechargeable batteries are regarded as one of the most reliable solutions for electrochemical energy storage, and ion (e.g., H + or OH − ) transport is essential for their electrochemical performance. However, modeling and numerical simulations often fall short of depicting the actual ion transport characteristics due to deviations in model assumptions from reality. Experimental methods, including laser interferometry, Raman, and nuclear magnetic resonance imaging, are limited by the complexity of the system and the restricted detection of ions, making it difficult to detect specific ions such as H + and OH − . Herein, in situ visualization of ion transport is achieved by innovatively introducing laser scanning confocal microscopy. Taking neutral Zn−air batteries as an example and using a pH-sensitive probe, real-time dynamic pH changes associated with ion transport processes are observed during battery operation. The results show that after immersion in the zinc sulfate electrolyte, the pH near the Zn electrode changes significantly and pulsation occurs, which demonstrates the intense self-corrosion hydrogen evolution reaction and the periodic change in the reaction intensity. In contrast, the change in the pH of the galvanized electrode plate is weak, proving its significant corrosion inhibition effect. For the air electrode, the heterogeneity of ion transport during the discharging and charging process is presented. With an increase of the current density, the ion transport characteristics gradually evolve from diffusion dominance to convection-diffusion codominance, revealing the importance of convection in the ion transport process inside batteries. This method opens up a new approach of studying ion transport inside batteries, guiding the design for performance enhancement.

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Electric Field Regulator Constructed by Magnetron Sputtering for Dendrite‐Free and Stable Zinc Metal Anode

Sun,

Cheng,

Ren

et al. 2024

Adv Funct Materials

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Rechargeable aqueous zinc‐ion batteries (AZIBs) are considered to be one of the most promising devices in the next generation of energy storage systems. However, the uncontrolled growth of Zn dendrites during electroplating leads to rapid battery failure, which hinders the wide application of AZIBs. In this work, an Fe metal interface (FMI) with electric field regulation is designed on the Zn metal anode using a magnetron sputtering technology. The FMI layer with nanosheet array not only uniforms the surface electric field, but also adjusts the surface Zn2+ ion distribution to inhibit 2D diffusion. The strong orientation relationships of the FMI layer enhance the reversibility of Zn plating/stripping, improving the structural stability of the interface layer. Consequently, FMI@Zn symmetric cell exhibits ultra‐stable lifespan for over 6000 h (Cumulative plated capacity, CPC = 15 Ah cm−2) with a low voltage hysteresis of 46.4 mV and high Coulombic efficiency of 99.8% at 5 mA cm−2. Even at the large current density of 40 mA cm−2, the CPC reaches 19.7 Ah cm−2. The proposed electric field regulation strategy reveals a promising prospect for designing highly stable Zn anode, which also applies to other metal anodes in energy storage systems.

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Tailoring desolvation strategies for aqueous zinc-ion batteries

Abstract: Aqueous zinc-ion batteries (AZIBs) are recognized as a promising power supply for energy storage devices due to their high theoretical capacity, inherent safety, suitable redox potential, and environmental friendliness. However,...

Cited by 39 publications

References 127 publications

Screening metal cation additives driven by differential capacitance for Zn batteries

Screening metal cation additives driven by differential capacitance for Zn batteries

In Situ Visualization of Ion Transport Processes in Aqueous Batteries

Electric Field Regulator Constructed by Magnetron Sputtering for Dendrite‐Free and Stable Zinc Metal Anode

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