Constructing Acrylic-Bonded Stationary Phase as an Artificial SEI for Highly Stable Zn Metal Anodes

Abstract

The development of aqueous zinc-ion batteries (AZIBs) has been severely restricted by metallic Zn anode issues, including Zn dendrites and uncontrollable side reactions. The direct interfacial modification of a Zn anode is a facile and effective strategy that has been favored by researchers. Herein, we propose an acrylic-bonded stationary layer as an artificial solid electrolyte interface (SEI) for the Zn anode to manipulate the Zn plating/stripping. The constructed modification layer is made of zinc acrylate cross-linked to form a three-dimensional (3D) porous structure, which can induce uniform deposition of zinc ions and balance the local electric field, thus achieving homogeneous nucleation and uniform Zn deposition. More importantly, this fabricated layer is chemically bonded to the zinc surface and can tolerate prolonged zinc deposition without shedding compared with conventional physical coatings. Consequently, the Zn/Zn symmetric cells, Zn/ Na 0.92 V 2 O 5 •nH 2 O (NaVO) full cells, and Zn hybrid supercapacitors using this acrylic-bonded modified anode demonstrate greatly improved cycle performance.

Engineering Interfacial Fast Ion Channels toward Highly Stable Zn Metal Batteries

“…On the other hand, the straight line observed in the low-frequency region reflects diffusion resistance (Z W ). 21 It can be clearly seen from Figure 3a that the modified PVDF/PA-VOP@Zn exhibits a significant reduction in R ct , indicating an enhanced charge-transfer capability. After 50 cycles, the R ct of PVDF/PA-VOP@Zn is considerably lower than that of bare Zn, suggesting effective mitigation of Zn passivation caused by side reactions.…”

“…The direct contact between the electrode and the electrolyte is recognized as the primary factor contributing to the above-mentioned obstacles encountered by zinc anodes, while the surface coating on the zinc anode can be considered analogous to an artificial solid electrolyte interface film. , The commonly utilized coatings, such as carbon-based materials, − are favored for their abundant resources and exceptional electrical conductivity. However, they often exhibit suboptimal mechanical strength, which may potentially result in battery failure.…”

Tailoring the hydrophobicity and zincophilicity of poly(ionic liquid) solid–electrolyte interphases for ultra-stable aqueous zinc batteries

“…(f ) Performance comparison of [PVBIm][TFSI] and [PVIPS][Zn(TFSI) 2 ] in the radar map. (g) Comparison of the cumulative plating capacity vs. the lifespan of the [PVIPS][Zn(TFSI)2]@Zn anode in this work and previously reported works 10,23,42,46,54,[61][62][63][64][65].…”

“…S9a †). In contrast, the symmetric cell with [PVIPS][Zn (TFSI) 2 ]@Zn exhibited an even more stable cycle life of over 1400 h. When it comes to 1.0 mA cm −2 /1.0 mA h cm −2 10,23,42,46,54,[61][62][63][64][65] (Fig. 6d), the cycle lifetime of [PVBIm][TFSI]@Zn and bare Zn symmetric cells was reduced to 240 h and 150 h, respectively.…”

Achieving high performance in aqueous iron-ion batteries using tunnel-like VO2 as a cathode material

“…While aqueous batteries, such as aqueous lithium-ion batteries (ALIBs), 4,5 aqueous sodium-ion batteries (ASIBs), 6,7 aqueous potassium-ion batteries (APIBs), 8,9 and aqueous magnesium-ion batteries (AMIBs) 10,11 have attracted much attention, their poor cycle life and high cost have hindered their application. Recently, aqueous zinc-ion batteries (AZIBs) 12,13 with high safety, nontoxicity, good specific capacity, and considerable power density 14,15 have emerged as a potential solution for ESSs. However, the application of AZIBs has been limited due to poor coulombic efficiency (CE), dendrite growth, hydrogen evolution, and severe voltage polarization.…”