Interfacial Engineering Strategy for High-Performance Zn Metal Anodes

Abstract

Due to their high safety and low cost, rechargeable aqueous Zn-ion batteries (RAZIBs) have been receiving increased attention and are expected to be the next generation of energy storage systems. However, metal Zn anodes exhibit a limited-service life and inferior reversibility owing to the issues of Zn dendrites and side reactions, which severely hinder the further development of RAZIBs. Researchers have attempted to design high-performance Zn anodes by interfacial engineering, including surface modification and the addition of electrolyte additives, to stabilize Zn anodes. The purpose is to achieve uniform Zn nucleation and flat Zn deposition by regulating the deposition behavior of Zn ions, which effectively improves the cycling stability of the Zn anode. This review comprehensively summarizes the reaction mechanisms of interfacial modification for inhibiting the growth of Zn dendrites and the occurrence of side reactions. In addition, the research progress of interfacial engineering strategies for RAZIBs is summarized and classified. Finally, prospects and suggestions are provided for the design of highly reversible Zn anodes.

Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

“…Taking ZnSO 4 electrolyte as an example, the reactions occurring on the zinc electrode and the corresponding electrode potentials are presented in Eqs. ( 10)-( 13): [71] Deposition: (10) HER: (11) Corrosion: (12) Side reaction: (13) where E is the potential, γ denotes the activity, C stands for the concentration and the other physical parameters represent specific values. Because of HER and zinc corrosion, the constant consumption of H + synchronizes with the side reactions caused by the remaining OH À , leading to no significant change in the pH value of the electrolyte.…”

“…[1][2][3][4][5][6][7][8][9][10][11] Rechargeable aqueous zinc-based batteries (RAZMBs) have proven to be one of the most promising candidates in a variety of application scenarios. [12][13][14][15][16][17] Compared with lithium-ion batteries using conventional organic electrolytes, RAZMBs have been received widespread attention due to their advantages in terms of safety and economic efficiency. Because of the environmental friendliness, low cost and high theoretical capacity (820 mAh g À 1 and 5855 mAh cm À 3 ), metallic zinc has been widely used as anode material.…”

“…In recent years, the market has been successfully occupied by various advanced energy storage systems as the demand for energy resources has increased [1–11] . Rechargeable aqueous zinc‐based batteries (RAZMBs) have proven to be one of the most promising candidates in a variety of application scenarios [12–17] . Compared with lithium‐ion batteries using conventional organic electrolytes, RAZMBs have been received widespread attention due to their advantages in terms of safety and economic efficiency.…”

Strategies for Stabilization of Zn Anodes for Aqueous Zn-Based Batteries: A Mini Review

“…Nevertheless, their large weight will lower the power density ( Li Q. et al, 2020 ). Organic coatings, such as PAM, polyvinyl butyral (PVB), 502 glue, and polyacrylonitrile (PAN), have been widely investigated and utilized as artificial SEIs for Zn anode stabilization, which exhibit abundant polar groups that can interact with solvated metallic ions ( Li et al, 2022 ). These polymeric coatings could not only provide homogenous ion pathways and restrict the 2D diffusion of Zn 2+ on the surface but also function like a shelter to block the detrimental side reactions.…”

Microstructure and Corrosion Behavior of Iron Based Biocomposites Prepared by Laser Additive Manufacturing

“…Basing on the above consideration, in this work, ZnS was incorporated into Fe implants aiming to accelerate the corrosion of Fe matrix. Meanwhile, Zn ion, as a trace element, could promote cell proliferation and differentiation, which was expected to improve the biocompatibility of Fe implant [ 12 ]. The Fe based implant was fabricated by the laser powder bed fusion (LPBF) technique.…”