Surface Control Behavior toward Crystal Regulation and Anticorrosion Capacity for Zinc Metal Anodes

Su, Tingting; Wang, Ke; Shao, Changyou; Le, Jia‐Bo; Ren, Wenfeng; Sun, Run‐Cang

doi:10.1021/acsami.2c22477

Cited by 12 publications

(2 citation statements)

References 38 publications

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“… 54 , 55 Moreover, bare Zn in ZnSO 4 +1Tw80 electrolyte ( Figure S17b ) shows an initial decrease and later increase in current density similar to MoO 2 @Zn in blank ZnSO 4 electrolyte, indicating that only the Tw80 additive could not fully impede Zn dendrites. However, the current density of MoO 2 @Zn in ZnSO 4 -containing Tw80 electrolyte decreases in a few seconds and then demonstrates a steady current–time behavior ( Figures 4 b and S17b ), 54 , 56 , 57 confirming the promotion of uniform Zn deposition and effective inhibition of Zn dendrite growth in the plating process of Zn 2+ ions by combining the MoO 2 coating layer and Tw80 electrolyte additive.…”

Section: Resultsmentioning

confidence: 81%

Synergistically Stabilizing Zinc Anodes by Molybdenum Dioxide Coating and Tween 80 Electrolyte Additive for High-Performance Aqueous Zinc-Ion Batteries

Thieu,

Li,

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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Recently, aqueous zinc-ion batteries (ZIBs) have become increasingly attractive as grid-scale energy storage solutions due to their safety, low cost, and environmental friendliness. However, severe dendrite growth, self-corrosion, hydrogen evolution, and irreversible side reactions occurring at Zn anodes often cause poor cyclability of ZIBs. This work develops a synergistic strategy to stabilize the Zn anode by introducing a molybdenum dioxide coating layer on Zn (MoO 2 @Zn) and Tween 80 as an electrolyte additive. Due to the redox capability and high electrical conductivity of MoO 2 , the coating layer can not only homogenize the surface electric field but also accommodate the Zn 2+ concentration field in the vicinity of the Zn anode, thereby regulating Zn 2+ ion distribution and inhibiting side reactions. MoO 2 coating can also significantly enhance surface hydrophilicity to improve the wetting of electrolyte on the Zn electrode. Meanwhile, Tween 80, a surfactant additive, acts as a corrosion inhibitor, preventing Zn corrosion and regulating Zn 2+ ion migration. Their combination can synergistically work to reduce the desolvation energy of hydrated Zn ions and stabilize the Zn anodes. Therefore, the symmetric cells of MoO 2 @Zn∥MoO 2 @Zn with optimal 1 mM Tween 80 additive in 1 M ZnSO 4 achieve exceptional cyclability over 6000 h at 1 mA cm –2 and stability (>700 h) even at a high current density (5 mA cm –2 ). When coupling with the VO 2 cathode, the full cell of MoO 2 @Zn∥VO 2 shows a higher capacity retention (82.4%) compared to Zn∥VO 2 (57.3%) after 1000 cycles at 5 A g –1 . This study suggests a synergistic strategy of combining surface modification and electrolyte engineering to design high-performance ZIBs.

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Section: Resultsmentioning

confidence: 81%

Synergistically Stabilizing Zinc Anodes by Molybdenum Dioxide Coating and Tween 80 Electrolyte Additive for High-Performance Aqueous Zinc-Ion Batteries

Thieu,

Li,

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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“…The functional design of electrolyte additives is an efficacious approach to effectively enhance the stability of the Zn anode. There are several types of electrolyte additives available, including cationic additives such as Sc 3+ , La 3+ , and Mg 2+ ; − surfactants like alkyl polyglucoside, arginine, and perfluorooctanoic acid; − inorganic salts like Zn(H 2 PO 4 ) 2 , Zn(NO 3 ) 2 , and KPF 6 ; − and organics like fluoroethylene carbonate, sulfolane, dimethyl methylphosphonate, and polydopamine. − Cationic additives can promote the uniform deposition of Zn 2+ as an electrostatic shielding layer. Surfactants can inhibit the irregular dendrite growth.…”

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confidence: 99%

Dual-Parasitic Effect Enables Highly Reversible Zn Metal Anode for Ultralong 25,000 Cycles Aqueous Zinc-Ion Batteries

Ma,

Wang,

et al. 2024

Nano Lett.

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The use of electrolyte additives is an efficient approach to mitigating undesirable side reactions and dendrites. However, the existing electrolyte additives do not effectively regulate both the chaotic diffusion of Zn 2+ and the decomposition of H 2 O simultaneously. Herein, a dual-parasitic method is introduced to address the aforementioned issues by incorporating 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIm]-OTf) as cosolvent into the Zn(OTf) 2 electrolyte. Specifically, the OTf − anion is parasitic in the solvent sheath of Zn 2+ to decrease the number of active H 2 O. Additionally, the EMIm + cation can construct an electrostatic shield layer and a hybrid organic/inorganic solid electrolyte interface layer to optimize the deposition behavior of Zn 2+ . This results in a Zn anode with a reversible cycle life of 3000 h, the longest cycle life of full cells (25,000 cycles), and an extremely high initial capacity (4.5 mA h cm −2 ), providing a promising electrolyte solution for practical applications of rechargeable aqueous zinc-ion batteries.

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Controllable Solid Electrolyte Interphase by Ionic Environment Regulation for Stable Zn‐Ion Battery

Liu,

Li,

Zhang

et al. 2023

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Artificial solid electrolyte interphase in organic solutions is effective and facile for long‐cycling aqueous zinc ion batteries. However, the specific effects on different ionic environments have not been thoroughly investigated. Herein, pyromellitic acid (PA) are employed as organic ligand to coordinate with Zn2+ under various ionic environments. The connection between the ionic environment and reaction spontaneity is analyzed to provide insights into the reasons behind the effectiveness of the SEI layer and to characterize its protective impact on the zinc anode. Notably, the PA solution (pH4) lacking OH− contributes to the formation of a dense and ultrathin SEI with Zn‐PA coordination, preventing direct contact between the anode and electrolyte. Moreover, the presence of organic functional groups facilitates a uniform flux of Zn2+. These advantages enable stable cycling of the PA4‐Zn symmetric cell at a current density of 3 mA cm−2 for over 3500 h. The PA4‐Zn//MVO full cell demonstrates excellent electrochemical reversibility. Investigating the influence of the ionic environment on SEI generation informs the development of novel SEI strategies.

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Surface Control Behavior toward Crystal Regulation and Anticorrosion Capacity for Zinc Metal Anodes

Cited by 12 publications

References 38 publications

Synergistically Stabilizing Zinc Anodes by Molybdenum Dioxide Coating and Tween 80 Electrolyte Additive for High-Performance Aqueous Zinc-Ion Batteries

Synergistically Stabilizing Zinc Anodes by Molybdenum Dioxide Coating and Tween 80 Electrolyte Additive for High-Performance Aqueous Zinc-Ion Batteries

Dual-Parasitic Effect Enables Highly Reversible Zn Metal Anode for Ultralong 25,000 Cycles Aqueous Zinc-Ion Batteries

Controllable Solid Electrolyte Interphase by Ionic Environment Regulation for Stable Zn‐Ion Battery

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