All‐Round Ionic Liquids for Shuttle‐Free Zinc‐Iodine Battery

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(8)

Опубликована: Янв. 5, 2024

Abstract The practical implementation of aqueous zinc‐iodine batteries (ZIBs) is hindered by the rampant Zn dendrites growth, parasite corrosion, and polyiodide shuttling. In this work, ionic liquid EMIM[OAc] employed as an all‐round solution to mitigate challenges on both anode iodine cathode side. First, EMIM + embedded lean‐water inner Helmholtz plane (IHP) inert solvation sheath modulated OAc − effectively repels H 2 O molecules away from surface. preferential adsorption metal facilitates uniform nucleation via a steric hindrance effect. Second, can reduce shuttling hindering dissolution forming ‐I 3 dominated phase. These effects holistically enhance cycle life, which manifested || symmetric cells Zn‐I full cells. ZIBs with EAc deliver capacity decay rate merely 0.01 ‰ per after over 18,000 cycles at 4 A g −1 , lower self‐discharge better calendar life than without additive.

Язык: Английский

---

Enhancing Zn‐Metal Anode Stability: Key Effects of Electrolyte Additives on Ion‐Shield‐Like Electrical Double Layer and Stable Solid Electrolyte Interphase

Advanced Functional Materials, Год журнала: 2024, Номер 34(18)

Опубликована: Янв. 16, 2024

Abstract Owing to zinc dendrites and parasitic reactions, aqueous Zn‐metal batteries often suffer from poor reversibility cyclability. Electrolyte additives present a promising strategy improve Zn anode stability. However, the ever‐evolving perspectives mechanisms, paradoxically, complicate battery design, causing scenario where any electrolyte additive seems be effective. Herein, it is taken ionic liquid (IL) as an example detailed explored impact of three typical IL anions, namely OTF − , TFA BF 4 . It identified that primary determinant their electrical double layer (EDL) structures subsequent solid‐electrolyte interface (SEI) composition. An advantageous EDL structure, akin ion‐shield, can reduce absorption H 2 O molecules, which further enrich SEI with zincophilic hydrophobic components, thereby mitigating reactions dendrite formation. As result, Zn||Zn cell optimal [EMIM]OTF demonstrates exceptional cycling life under challenging conditions, its cumulative plated capacity surpasses most previously reported results by utilizing different additives. This work extends beyond performance enhancements, representing valuable exploration key criteria for believed. These insights are expected offer fundamental guidance future research design.

Язык: Английский

---

Interfacial Biomacromolecular Engineering Toward Stable Ah‐Level Aqueous Zinc Batteries

Advanced Materials, Год журнала: 2024, Номер 36(33)

Опубликована: Июнь 20, 2024

Interfacial instability within aqueous zinc batteries (AZBs) spurs technical obstacles including parasitic side reactions and dendrite failure to reach the practical application standards. Here, an interfacial engineering is showcased by employing a bio- derived zincophilic macromolecule as electrolyte additive (0.037 wt%), which features long-chain configuration with laterally distributed hydroxyl sulfate anion groups, has propensity remodel electric double layer of Zn anodes. Tailored

Язык: Английский

---

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

ACS Nano, Год журнала: 2024, Номер 18(4), С. 3752 - 3762

Опубликована: Янв. 17, 2024

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

Язык: Английский

---

Customizing the water-scarce, zinc ion-rich Helmholtz plane of a zinc anode for Ah-scale Zn metal batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(20), С. 7850 - 7859

Опубликована: Янв. 1, 2024

By constructing a hydrogel film doped with an ionic liquid on Zn anode, water-scarce inner Helmholtz plane and ion-enriched outer is developed, which effectively enables stable zinc anode for Ah-scale metal batteries.

Язык: Английский

---

Unveiling the potential of redox electrolyte additives in enhancing interfacial stability for Zn-ion hybrid capacitors

Energy storage materials, Год журнала: 2024, Номер 65, С. 103175 - 103175

Опубликована: Янв. 3, 2024

Язык: Английский

---

Trade-off between H₂O-rich and H₂O-poor electric double layers enables highly reversible Zn anodes in aqueous Zn-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(7), С. 2566 - 2575

Опубликована: Янв. 1, 2024

Trade-off between H 2 O-rich and O-poor EDLs to balance dead Zn dendrites side reactions, realizing highly reversible anodes.

Язык: Английский

---

Dual-anion chemistry synchronously regulating the solvation structure and electric double layer for durable Zn metal anodes

Energy & Environmental Science, Год журнала: 2024, Номер 17(9), С. 3179 - 3190

Опубликована: Янв. 1, 2024

Dual-anion chemistry is engineered by adding strong polarity Ac − into Zn(OTf) 2 electrolyte, which enables synchronous regulation of solvation structure and electric double layer, thereby countering rapid Zn 2+ consumption prompting favorable interphase formation for durable metal anodes.

Язык: Английский

---

Establishing Pinhole Deposition Mode of Zn via Scalable Monolayer Graphene Film

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 7, 2024

Abstract The uneven texture evolution of Zn during electrodeposition would adversely impact upon the lifespan aqueous metal batteries. To address this issue, tremendous endeavors are made to induce Zn(002) orientational deposition employing graphene and its derivatives. Nevertheless, effect prototype film over behavior has garnered less attention. Here, it is attempted solve such a puzzle via utilizing transferred high‐quality with controllable layer numbers in scalable manner on foil. multilayer fails facilitate epitaxial deposition, whereas monolayer slight breakages steers unique pinhole mode. In‐depth electrochemical measurements theoretical simulations discover that not only acts as an armor inhibit side reactions but also serves buffer homogenize initial nucleation decrease migration barrier, accordingly enabling smooth closely stacked polycrystalline domains. As result, both assembled symmetric full cells manage deliver satisfactory performances. This study proposes concept “pinhole deposition” dictate broadens horizons graphene‐modified anodes.

Язык: Английский

---

Research progress of Zn-air batteries suitable for extreme temperatures

Energy storage materials, Год журнала: 2024, Номер 69, С. 103429 - 103429

Опубликована: Апрель 23, 2024

Язык: Английский

---