Advanced polymer-based electrolytes in zinc–air batteries

eScience, Journal Year: 2022, Volume and Issue: 2(5), P. 453 - 466

Published: Sept. 1, 2022

Zinc–air batteries (ZABs) are expected to be some of the most promising power sources for wearable and portable electronic devices have received widespread research interest. As an ion conductor connecting anodes cathodes, electrolyte is critical overall performance ZABs (e.g., energy density, rechargeability, operating voltage). Compared with liquid electrolytes, polymer-based electrolytes superior characteristics ZABs, such as negligible leakage, three-phase interface stabilization, dendrite suppression. In this perspective, we focus on recent progress in ZABs. After a brief introduction emphasize development terms their intrinsic properties interfacial chemistry. Finally, challenges viable strategies proposed We hope that work will provide useful guidance spur high-performance based advanced electrolytes.

Language: Английский

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Dual‐Network Structured Hydrogel Electrolytes Engaged Solid‐State Rechargeable Zn‐Air/Iodide Hybrid Batteries

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(44)

Published: Sept. 12, 2022

As a key component of batteries, the electrolyte determines ion transport and interface chemistry cathode anode. In this work, we develop dual-network structured hydrogel composed polyacrylamide (PAM), sodium alginate (SA) potassium iodide (KI) for solid-state zinc-air/iodide hybrid batteries. The assembled battery shows excellent renewability long cycling life 110 h with high energy efficiency 80 %. ion-crosslinked structure endows material improved mechanical strength increased ionic conductivity. More importantly, introduction iodine species not only offers more favorable cathodic kinetics iodide/iodate redox than oxygen electrocatalysis but also regulates solvation zinc ions to ensure better stability. This work provides significant concepts developing novel electrolytes realize high-performance devices technologies.

Language: Английский

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A Multifunctional Electrolyte Additive With Solvation Structure Regulation and Electrode/Electrolyte Interface Manipulation Enabling High‐Performance Li‐Ion Batteries in Wide Temperature Range

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(16)

Published: March 11, 2023

Abstract Improving the tolerance of Li‐ion batteries (LIBs) to extreme temperatures and climates worldwide is vital their global uptake. However, LIBs call for more strict requirements key components when operated in a wide temperature range, especially synchronously desirable interfacial kinetics thermal stability. Here, novel multifunctional electrolyte additive, N ‐tert‐butyl‐2‐thiophenesulfonamide (NTSA), fabricate stable under wide‐temperature conditions, reported. The solvation structure regulated involves less coordinated solvents (particularly fluoroethylene carbonate), leading superior Li + transportation. effective NTSA additive preferentially decomposed form uniform electrode/electrolyte interface with abundant multiphase inorganic LiF, 3 N, LiS species simultaneously on cathode anode surface. resulting inorganic‐rich can not only boost transfer at low but also protect active material enhance stability LIB devices high temperatures. By adopting NTSA‐containing electrolyte, LiCoO 2 ||ω‐Li V O 5 be stably cycled range between −30 °C 80 °C, delivering capacity ≈100.1 mAh g −1 (0.2 A ) −20 retention 94.5% after 200 cycles (0.5 55 °C.

Language: Английский

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Cathode Electrolyte Interface Engineering by Gradient Fluorination for High‐Performance Lithium Rich Cathode

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(34)

Published: July 27, 2023

Abstract Despite their ultrahigh specific capacity, lithium‐rich layered oxide cathodes are still plagued by challenges such as poor cycle stability and notorious voltage decay, which primarily attributed to surface issues the release of lattice oxygen interfacial side reactions. In this study, a facial strategy gradient fluorination is adopted construct thin but robust LiF‐rich cathode electrolyte interface (CEI), highly enhancing oxides. Experimental results theoretical calculations both demonstrate that stable CEI not only promotes participation in redox reactions simultaneously inhibits structural transition, also facilitates transport kinetics lithium ions. As result, fluorinated delivers enhanced rate performance (133 mAh g −1 at 5 C), superior cycling with capacity retention 81.9% after 100 cycles 1 C (250 ), alleviated fade (only 1.75 mV per cycle). Moreover, unique formation mechanism for surfaces proposed according calculations. This work provides fresh understanding mechanism, show promising avenue designing CEIs applicable other cathodes.

Language: Английский

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Multifunctional self-reconstructive cathode/electrolyte interphase layer for cobalt-free Li-rich layered oxide cathode

Energy storage materials, Journal Year: 2023, Volume and Issue: 60, P. 102798 - 102798

Published: May 3, 2023

Language: Английский

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Restraining migration and dissolution of transition-metal-ions via functionalized separator for Li-rich Mn-based cathode with high-energy-density

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 84, P. 11 - 21

Published: May 20, 2023

Language: Английский

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Understanding Lattice Oxygen Redox Behavior in Lithium‐Rich Manganese‐Based Layered Oxides for Lithium‐Ion and Lithium‐Metal Batteries from Reaction Mechanisms to Regulation Strategies

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(48)

Published: Nov. 9, 2023

Abstract Lithium‐rich manganese‐based layered oxides (LMLOs) are considered to be one type of the most promising materials for next‐generation cathodes lithium batteries due their distinctive anionic redox processes contributing ultrahigh capacity and energy density. Unfortunately, practical applications still plagued by several challenges such as undesirable interfacial reactions structural evolution, well voltage hysteresis/recession, in which irreversible behavior bears brunt primacy factor. Undoubtedly, a deep understanding reaction mechanisms oxygen species is crucial order provide essential guidance modification strategies LMLOs. In this paper, fundamental intricate from thermodynamics models kinetic pathways comprehensively reviewed, existing LMLOs related with analyzed. Furthermore, numerous representative overcoming these challenges, coupled underlying regulating reversibility summarized. addition, aspects multi‐scale modifications, integration interdisciplinary technologies, application quasi‐/all‐solid‐state battery systems given some emphasis terms further improvement LMLOs‐based cathode advanced batteries‐based storage systems.

Language: Английский

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Accessing the O Vacancy with Anionic Redox Chemistry Toward Superior Electrochemical Performance in O3 type Na‐Ion Oxide Cathode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 13, 2024

Abstract Anionic redox chemistry is now viewed as the effective paradigm of improving capacity layered oxide materials in Sodium‐ion battery. In this study, O3‐type NaLi 0.18 Co 0.23 Ru 0.59 O 2 (NLCR) with ability successfully synthesized via a facile solid‐state synthesis method. By manipulating calcinate atmosphere air and argon (sort by NLCR‐Air NLCR‐Ar respectively), large amount vacancy introduced cathode. sufficient exhibited superior rate performance which showed 87.7% retention after 1000 cycles at 20 C. Both activation properties supported soft X‐ray absorption spectroscopy (sXAS). Nevertheless, in‐situ diffraction sXAS studies disclosed can promote reversible phase transition effectively suppress irreversible upon cycling. These are further theoretical study suggested fast kinetic Na diffusion less electron agglomeration around atom for vacancy.The research proposed modification strategy extraordinary property within cathode offered novel insight into understanding anionic mechanism thus provide guidance material design advanced energy storage systems.

Language: Английский

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570 Wh kg⁻¹‐Grade Lithium Metal Pouch Cell with 4.9V Highly Li⁺ Conductive Armor‐Like Cathode Electrolyte Interphase via Partially Fluorinated Electrolyte Engineering

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: March 4, 2024

Abstract Lithium‐rich manganese‐based layered oxides (LRMOs) are promisingly used in high‐energy lithium metal pouch cells due to high specific capacity/working voltage. However, the interfacial stability of LRMOs remains challenging. To address this question, a novel armor‐like cathode electrolyte interphase (CEI) model is proposed for stabilizing LRMO at 4.9 V by exploring partially fluorinated formulation. The fluoroethylene carbonate (FEC) and tris (trimethylsilyl) borate (TMSB) formulated largely contribute formation CEI with LiB x O y Li PO F z outer layer LiF‐ 3 4 ‐rich inner part. Such effectively inhibits lattice oxygen loss facilitates + migration smoothly guaranteeing deliver superior cycling rate performance. As expected, Li||LRMO batteries such achieve capacity retention 85.7% average Coulomb efficiency (CE) 99.64% after 300 cycles 4.8 V/0.5 C, even obtain 87.4% 100 higher cut‐off voltage V. Meanwhile, 9 Ah‐class show over thirty‐eight stable life energy density 576 Wh kg −1

Language: Английский

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Designing Current Collectors to Stabilize Li Metal Anodes

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.

Language: Английский

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