Hydrated Eutectic Electrolyte Induced Bilayer Interphase for High‐Performance Aqueous Zn‐Ion Batteries with 100 °C Wide‐Temperature Range

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 13, 2023

Abstract The practical implementation of aqueous zinc‐ion batteries (AZIBs) encounters challenges such as dendrite growth, parasitic reactions, and severe decay in battery performance under harsh environments. Here, a novel hydrated eutectic electrolyte (HEE) composed Zn(ClO 4 ) 2 ·6H O, ethylene glycol (EG), InCl 3 solution is introduced to effectively extend the lifespan AZIBs over wide temperature range from −50 50 °C. Molecular dynamics simulations spectroscopy analysis demonstrate that H O molecules are confined within liquid network through dual‐interaction, involving coordination with Zn 2+ hydrogen bonding EG, thus weakening activity free water extending electrochemical window. Importantly, cryo‐transmission electron microscopy techniques reveal HEE situ forms zincophobic/zincophilic bilayer interphase by dissociation‐reduction molecules. Specifically, zincophilic reduces energy barrier for nucleation, promoting uniform deposition, while zincophobic prevents active contacting surface, inhibiting side reactions. Furthermore, relationships between structural evolution interfacial chemistry at electrode/electrolyte further discussed this work. scalability design strategy can bring benefits operating range.

Language: Английский

---

Oxygen Reduction Kinetics of Fe–N–C Single Atom Catalysts Boosted by Pyridinic N Vacancy for Temperature-Adaptive Zn–Air Batteries

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(7), P. 4803 - 4813

Published: Feb. 9, 2024

The design of temperature-adaptive Zn–air batteries (ZABs) with long life spans and high energy efficiencies is challenging owing to sluggish oxygen reduction reaction (ORR) kinetics an unstable Zn/electrolyte interface. Herein, a quasi-solid-state ZAB designed by combining atomically dispersed Fe–N–C catalysts containing pyridinic N vacancies (FeNC-VN) polarized organo-hydrogel electrolyte. First-principles calculation predicts that adjacent VN sites effectively enhance the covalency Fe–Nx moieties moderately weaken *OH binding energies, significantly boosting ORR stability. In situ Raman spectra reveal dynamic evolution *O2– *OOH on FeNC-VN cathode in aqueous ZAB, proving 4e– associative mechanism dominant. Moreover, ethylene glycol-modulated electrolyte forms zincophilic protective layer Zn anode surface tailors [Zn(H2O)6]2+ solvation sheath, guiding epitaxial deposition Zn2+ (002) plane suppressing side reactions. assembled demonstrates span over 1076 h at 2 mA cm–2 −20 °C, outperforming most reported ZABs.

Language: Английский

---

Microfluidic‐Assisted 3D Printing Zinc Powder Anode with 2D Conductive MOF/MXene Heterostructures for High‐Stable Zinc−Organic Battery

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 9, 2023

Abstract Zinc powder (Zn‐P) anodes have significant advantages in terms of universality and machinability compared with Zn foil anodes. However, their rough surface, which has a high surface area, intensifies the uncontrollable growth dendrites parasitic side reactions. In this study, an anti‐corrosive Zn‐P‐based anode functional layer formed from MXene Cu‐THBQ (MXene/Cu‐THBQ) heterostructure is successfully fabricated via microfluidic‐assisted 3D printing. The unusual strong adsorption ions using MXene/Cu‐THBQ can effectively homogenize ion flux inhibit hydrogen evolution reaction (HER) during repeated process plating/stripping, thus achieving stable cycling. Consequently, symmetric cell based on Zn‐P exhibits highly reversible cycling 1800 h at 2 mA cm −2 /1 mAh . Furthermore, Zn‐organic full battery matched 4‐hydroxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl organic cathode riveted graphene delivers capacity maintains long cycle life.

Language: Английский

---

Gradient‐Structured and Robust Solid Electrolyte Interphase In Situ Formed by Hydrated Eutectic Electrolytes for High‐Performance Zinc Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(8)

Published: Jan. 26, 2024

Abstract The mechanically and electrochemically stable ionically conducting solid electrolyte interphase (SEI) is important for the stabilization of metal anodes. Since SEIs are originally absent in aqueous zinc batteries (AZMBs), it very challenging to suppress water‐induced side reactions dendrite growth Zn anodes (ZMAs). Herein, a gradient‐structured robust gradient SEI, consisting B,O‐inner F,O‐exterior layer, situ formed by hydrated eutectic homogeneous reversible deposition, demonstrated. Moreover, molar ratio acetamide salt modulated prohibit water activity hydrolysis BF 4 − as well achieve high ionic conductivity owing regulation solvation sheath 2+ . Consequently, allows Zn||Zn symmetric cells cycling lifespan over 4400 h at 0.5 mA cm −2 Zn||PANI full deliver capacity retention 73.2% 4000 cycles 1 A g −1 demonstrate operation low temperatures. This work provides rational design corresponding dendrite‐free even under harsh conditions.

Language: 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, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 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.

Language: Английский

---

Interfacial Biomacromolecular Engineering Toward Stable Ah‐Level Aqueous Zinc Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 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

Language: Английский

---

Mapping the design of electrolyte additive for stabilizing zinc anode in aqueous zinc ion batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 68, P. 103364 - 103364

Published: March 24, 2024

Language: Английский

---

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

ACS Nano, Journal Year: 2024, Volume and Issue: 18(4), P. 3752 - 3762

Published: Jan. 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.

Language: Английский

---

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

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(9)

Published: Jan. 8, 2024

The aqueous zinc-ion battery is promising as grid scale energy storage device, but hindered by the instable electrode/electrolyte interface. Herein, we report lean-water ionic liquid electrolyte for zinc metal batteries. creates hydrophobic tri-layer interface assembled first two layers of OTF

Language: Английский

---

Non‐Metal Ion Storage in Zinc‐Organic Batteries

Advanced Science, Journal Year: 2024, Volume and Issue: 11(19)

Published: March 13, 2024

Abstract Zinc‐organic batteries (ZOBs) are receiving widespread attention as up‐and‐coming energy‐storage systems due to their sustainability, operational safety and low cost. Charge carrier is one of the critical factors affecting redox kinetics electrochemical performances ZOBs. Compared with conventional large‐sized sluggish Zn 2+ storage, non‐metallic charge carriers small hydrated size light weight show accelerated interfacial dehydration fast reaction kinetics, enabling superior metrics for Thus, it valuable ongoing works build better ZOBs ion storage. In this review, versatile cationic (H + , NH 4 ) anionic (Cl − OH CF 3 SO 2− first categorized a brief comparison respective physicochemical properties chemical interactions redox‐active organic materials. Furthermore, work highlights implementation effectiveness ions in ZOBs, giving insights into impact types on (capacity, rate capability, operation voltage, cycle life) cathodes. Finally, challenges perspectives non‐metal‐ion‐based outlined guild future development next‐generation energy communities.

Language: Английский

---