A flexible and highly ion conductive polyzwitterionic eutectogel for quasi-solid state zinc ion batteries with efficient suppression of dendrite growth

Wu, Yihan; Deng, Yongqi; Zhang, Kefu; Wang, Yu; Wang, Lele; Yan, Lifeng

doi:10.1039/d2ta05009a

Cited by 28 publications

(11 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher NOP corresponds to a strong driving force for nucleation and will be helpful for the formation of more fine-grained deposits, whereas the low NOP may easily induce zinc dendrite formation. [25] These results indicate that TU-CQDs can inhibit the diffusion and reduction of zinc ions by adsorbing on the electrode surface. In addition, it can be seen from the cyclic voltammetry curves that only adding TU as electrolyte additive does not alter the E o and NOP of zinc electrodeposition process.…”

Section: Resultsmentioning

confidence: 91%

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†

Cai

Chang

et al. 2023

Chin. J. Chem.

View full text Add to dashboard Cite

Comprehensive Summary The severe dendrite growth on zinc anode in alkaline electrolyte brings great challenge to the development of zinc‐based batteries. It is a simple and effective strategy to inhibit zinc dendrite formation by introducing additives into the electrolyte. In this study, N, S‐doped carbon dots (TU‐CQDs) were synthesized and used as additives to regulate zinc deposition in a typical KOH electrolyte. The experimental and three‐dimensional transient nucleation model disclosed that the special functional groups of carbon dots can change the electrode surface state and the coordination behaviors of zinc species in the electrolyte. Therefore, TU‐CQDs can not only inhibit the hydrogen evolution reaction, but also achieve uniform zinc deposition. The in‐situ synchrotron radiation X‐ray imaging elucidated that TU‐CQDs can effectively inhibit the dendrite growth and improve the reversibility of zinc plating/stripping process. This work provides a feasible route for regulating the reversibility of zinc metal anode in alkaline electrolyte.

show abstract

Section: Resultsmentioning

confidence: 91%

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†

Cai

Chang

et al. 2023

Chin. J. Chem.

View full text Add to dashboard Cite

show abstract

“…Importantly, the modified interaction order of the sulfonate group significantly affects the electrochemical properties as the negatively charged -SO 3 − promotes robust interaction with Zn 2+ ions, which mitigates the uneven distribution of Zn 2+ ions across the entire gel structure. [56,57] Thus, when ZGPE-5 is employed, the priority order of interactions between the polymer chains and internal ions changes and facilitates the formation of a Zn 2+ ion transfer pathway. Consequently, the ZGPE-2 demonstrates insufficient modification of electrochemical properties, as internal ions primarily interacted with functional groups other than the sulfonate group of SBMA.…”

Section: Effect and Working Mechanism Of Zgpe Concentration Modulationmentioning

confidence: 99%

Promoting Homogeneous Zinc‐Ion Transfer Through Preferential Ion Coordination Effect in Gel Electrolyte for Stable Zinc Metal Batteries

Lee,

Han,

Jeon

et al. 2023

Advanced Science

View full text Add to dashboard Cite

Aqueous zinc metal batteries (AZMBs) are emerging energy storage systems that are poised to replace conventional lithium‐ion batteries owing to their intrinsic safety, facile manufacturing process, economic benefits, and superior ionic conductivity. However, the issues of inferior anode reversibility and dendritic plating during operation remain challenging for the practical use of AZMBs. Herein, a gel electrolyte based on zwitterionic poly(sulfobetaine methacrylate) (poly(SBMA)) dissolved with different concentrations of ZnSO4 is proposed. Two‐dimensional correlation spectroscopy based on Raman analysis reveals an enhanced interaction priority between the polar groups in SBMA and the dissolved ions as electrolyte concentration increases, which establishes a robust interaction and renders homogeneous ion distribution. Attributable to the modified coordination, zwitterionic gel polymer electrolyte with 5 mol kg−1 of ZnSO4 (ZGPE‐5) facilitates stable zinc deposition and improves anode reversibility. By taking advantage of preferential coordination, a symmetrical cell evaluation employing ZGPE‐5 demonstrates a cycle life over 3600 h, where ZGPE‐5 also exerts a beneficial effect on the full cell cycling when assembled with Zn0.25V2O5 cathode. This study elucidates changes in the internal ion behavior that are dependent on electrolyte concentrations and pave the way for durable AZMBs.

show abstract

“…As a novel alternative for energy storage, aqueous Zn-ion batteries (AZIBs) have gradually become a research hotspot due to the advantages of environmental friendliness, low cost, and high volumetric capacity (5585 mA h cm −3 for the Zn anode). [2][3][4] However, their commercial application is hindered due to issues including serious side reactions, Zn corrosion, dendrite growth, low voltage, and low specic capacity in mild electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the regulation of a polyhydroxy electrolyte additive for a reversible, dendrite-free zinc anode

et al. 2023

View full text Add to dashboard Cite

show abstract

A flexible and highly ion conductive polyzwitterionic eutectogel for quasi-solid state zinc ion batteries with efficient suppression of dendrite growth

Abstract: Gels have gained much attention in flexible batteries. However, traditional hydrogel electrolytes are insufficient to solve the fundamental problems of zinc cathode, such as dendrite issues and parasitic side reactions,...

Cited by 28 publications

References 50 publications

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†

Promoting Homogeneous Zinc‐Ion Transfer Through Preferential Ion Coordination Effect in Gel Electrolyte for Stable Zinc Metal Batteries

Unraveling the regulation of a polyhydroxy electrolyte additive for a reversible, dendrite-free zinc anode

Contact Info

Product

Resources

About

A flexible and highly ion conductive polyzwitterionic eutectogel for quasi-solid state zinc ion batteries with efficient suppression of dendrite growth

Abstract: Gels have gained much attention in flexible batteries. However, traditional hydrogel electrolytes are insufficient to solve the fundamental problems of zinc cathode, such as dendrite issues and parasitic side reactions,...

Cited by 28 publications

References 50 publications

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte†

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte†

Promoting Homogeneous Zinc‐Ion Transfer Through Preferential Ion Coordination Effect in Gel Electrolyte for Stable Zinc Metal Batteries

Unraveling the regulation of a polyhydroxy electrolyte additive for a reversible, dendrite-free zinc anode

Contact Info

Product

Resources

About

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†

N, S‐Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte^†