A eutectic electrolyte for an ultralong-lived Zn//V2O5cell: anin situgenerated gradient solid-electrolyte interphase

Meng, Chao; He, Weidong; Tan, Huaqiao; Wu, Xing‐Long; Liu, Hong; Wang, Jianjun

doi:10.1039/d3ee01447a

Cited by 90 publications

(29 citation statements)

References 64 publications

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“…This suggests the existence of an additional charge transfer interface resulting from the formation of a SEI. 23,28,29 As the cycling time increased, the R ct gradually decreased from 60 Ω to 15 Ω and the R SEI remained stable at around 4.7 Ω (Table S1), indicating that the SEI layer can form rapidly in the early cycles and become homogenized during subsequent electrochemical processes. 23,28,29 Inversely, the impedance dropped to approximately 0 Ω after 50 cycles in the ZnSO 4 electrolyte, indicating a significant issue of severe soft short-circuit or even a short-circuit problem in the cells (Figure S12).…”

Section: Resultsmentioning

confidence: 99%

“…23,28,29 As the cycling time increased, the R ct gradually decreased from 60 Ω to 15 Ω and the R SEI remained stable at around 4.7 Ω (Table S1), indicating that the SEI layer can form rapidly in the early cycles and become homogenized during subsequent electrochemical processes. 23,28,29 Inversely, the impedance dropped to approximately 0 Ω after 50 cycles in the ZnSO 4 electrolyte, indicating a significant issue of severe soft short-circuit or even a short-circuit problem in the cells (Figure S12). In conclusion, the aforementioned evidence and analysis demonstrate that the Gln/ZnSO 4 electrolyte exerts a significant inhibitory effect on byproduct formation at the Zn surface, thereby effectively preventing uncontrolled dendrite growth and facilitating uniform deposition of Zn.…”

Section: Resultsmentioning

confidence: 99%

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Constructing a Topologically Adaptable Solid Electrolyte Interphase for a Highly Reversible Zinc Anode

Yan,

Liu,

et al. 2024

ACS Nano

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The performance of aqueous zinc metal batteries is significantly compromised by the stability of the solid electrolyte interphase (SEI), which is intimately linked to the structure of the electrical double layer (EDL) between the zinc anode and electrolyte. Furthermore, understanding the mechanical behavior of SEI is crucial, as it governs its response to stress induced by volume changes, fracture, or deformation. In this study, we introduce l-glutamine (Gln) as an additive to regulate the adsorbed environment of the EDL and in situ produce a hybrid SEI consisting of ZnS and Gln-related species. The results of the nanoindentation test indicate that the hybrid SEI exhibits a low modulus and low hardness, alongside exceptional shape recovery capability, which effectively limits side reactions and enables topological adaptation to volume fluctuations in zinc anodes during zinc ion plating/stripping, thereby enabling Zn//Zn symmetric cells to exhibit an ultralong cycle life of 4000 h in coin cells and a high cumulative capacity of 18,000 mA h in pouch cells. More importantly, the superiority of the formulated strategy is further demonstrated in Zn//NH4V4O10 full cells at different N/P ratios of 5.2, 4.9, 3.5, and 2.4. This provides a promising approach for future interfacial modulation in aqueous battery chemistry.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Constructing a Topologically Adaptable Solid Electrolyte Interphase for a Highly Reversible Zinc Anode

Yan,

Liu,

et al. 2024

ACS Nano

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“…Some researches focussing on in situ formation of inorganic-organic composite AILs are concluded in Table 2. Importantly, via electrolyte modulation (eutectic, [148,149] gel, [150] organic [151] and hybrid electrolyte, [41,152] additives [153][154][155][156] ), additional unusual functionalities can also be obtained, in particular concerning the dendrites suppression and excellent cycling durability for AZIBs.…”

Section: Inorganic-organic Composite Ails Synthesized By In-situmentioning

confidence: 99%

“…In this report, eutectic electrolytes consist of hydrated zinc salt Zn(BF 4 ) 2 • 6H 2 O and solvent DME. [149] The organic components were mainly originated from the decomposition of DME, which is ascribed to the protic acid produced by BF 4…”

Section: Inorganic-organic Composite Ails Synthesized By In-situmentioning

confidence: 99%

Functional Oriented Design of Composite Artificial Interface Layers Towards Stable Zinc Anodes In Aqueous Zinc‐ion Batteries

Zhang,

Jin,

Liu

et al. 2023

Batteries & Supercaps

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Rechargeable aqueous zinc ion batteries (AZIBs) with metallic Zn anodes have been regarded as attractive candidates for large‐scale energy storage systems as a result of their affordability, safety, and high energy density. However, the practical implementation of rechargeable AZIBs is still hampered severely by the poor electrochemical stability and reversibility of Zn anodes, stemming from uncontrolled dendrite growth and rampant side reactions. Due to the versatility of different components in the composite artificial interface layer (AIL), great efforts on multifunctional AILs have recently been devoted to Zn anode protection for designing durable and stable AZIBs. This review first presents a comprehensive and timely summarization on the origin and mechanism of dendrite growth and side reactions, followed by the systematic summarization of five protection mechanisms/functions of the AILs. Next, recent advances are discussed in the manner of a correlation between the combined materials/structures in composite AILs and their synergetic functionality, highlighting the critical role of functional orientation design of the composite AILs towards stable Zn anodes. Finally, perspectives and suggestions are provided for designing highly effective multifunctional composite AILs towards Zn anodes for AZIBs.

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“…Among these, solid electrolyte interface (SEI), whether artificially or in situ generated, has been identified as the most effective method to block water from the interface and regulate zinc deposition. [8] To address these challenges, the decomposition chemistry of anions like trifluoromethanesulfonate (OTF À ), TSFI À , and FSI À , to form ZnF 2 rich SEI layer has been intensively investigated. [9] An ideal SEI layer requires to be both structural uniform and mechanically stable.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Hydrophobic Tri‐layer Interface Rendered Mechanically Graded Solid Electrolyte Interface for Stable Zinc Metal Anode

Liu,

Xu,

Zhang

et al. 2024

Angew Chem Int Ed

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The aqueous zinc‐ion battery is promising as grid scale energy storage device, but hindered by the instable electrode/electrolyte interface. Herein, we report the lean‐water ionic liquid electrolyte for aqueous zinc metal batteries. The lean‐water ionic liquid electrolyte creates the hydrophobic tri‐layer interface assembled by first two layers of hydrophobic OTF‐ and EMIM+ and third layer of loosely attached water, beyond the classical Gouy–Chapman–Stern theory based electrochemical double layer. By taking advantage of the hydrophobic tri‐layer interface, the lean‐water ionic liquid electrolyte enables a wide electrochemical working window (2.93 V) with relatively high zinc ion conductivity (17.3 mS/cm). Furthermore, the anion crowding interface facilitates the OTF‐ decomposition chemistry to create the mechanically graded solid electrolyte interface layer to simultaneously suppress the dendrite formation and maintain the mechanical stability. In this way, the lean‐water based ionic liquid electrolyte realizes the ultralong cyclability of over 10000 cycles at 20 A/g and at practical condition of N/P ratio of 1.5, the cumulated areal capacity reach 1.8 Ah/cm2, which outperforms the state‐of‐the‐art zinc metal battery performance. Our work highlights the importance of the stable electrode/electrolyte interface stability, which would be practical for building high energy grid scale zinc‐ion battery.

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A eutectic electrolyte for an ultralong-lived Zn//V₂O₅cell: anin situgenerated gradient solid-electrolyte interphase

Abstract: Turbulent interfacial evolution at the Zn anode/electrolyte, leading to rampant dendrites and parasitic reactions, is responsible for low Coulombic efficiency (CE) and premature failure in Zn metal batteries. To address...

Cited by 90 publications

References 64 publications

Constructing a Topologically Adaptable Solid Electrolyte Interphase for a Highly Reversible Zinc Anode

Constructing a Topologically Adaptable Solid Electrolyte Interphase for a Highly Reversible Zinc Anode

Functional Oriented Design of Composite Artificial Interface Layers Towards Stable Zinc Anodes In Aqueous Zinc‐ion Batteries

Electrochemical Hydrophobic Tri‐layer Interface Rendered Mechanically Graded Solid Electrolyte Interface for Stable Zinc Metal Anode

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