Inhibition of Vanadium Cathodes Dissolution in Aqueous Zn‐Ion Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(14)

Published: Jan. 16, 2024

Aqueous zinc-ion batteries (AZIBs) have experienced a rapid surge in popularity, as evident from the extensive research with over 30 000 articles published past 5 years. Previous studies on AZIBs showcased impressive long-cycle stability at high current densities, achieving thousands or tens of cycles. However, practical low densities (<1C) is restricted to merely 50-100 cycles due intensified cathode dissolution. This genuine limitation poses considerable challenge their transition laboratory industry. In this study, leveraging density functional theory (DFT) calculations, an artificial interphase that achieves both hydrophobicity and restriction outward penetration dissolved vanadium cations, thereby shifting reaction equilibrium suppressing dissolution following Le Chatelier's principle, described. The approach has resulted one best cycling stabilities date, no noticeable capacity fading after more than 200 (≈720 h) mA g

Language: Английский

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Tailoring desolvation strategies for aqueous zinc-ion batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 4819 - 4846

Published: Jan. 1, 2024

This review provides a comprehensive overview detailing the advancements in desolvation strategies pertaining to aqueous zinc-ion batteries (AZIBs) performances, addressing applications and working mechanisms of AZIBs.

Language: Английский

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Crystallographic Manipulation Strategies toward Reversible Zn Anode with Orientational Deposition

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(25)

Published: April 24, 2024

Abstract The reversibility and sustainability of Zn anode are greatly hampered by the dendrite growth side reactions. Orientational deposition, which allows assembly deposits in a highly ordered compact manner, offers solution to these issues enabling dendrite‐free anodes. Moreover, orientational deposition can effectively inhibit reaction reducing exposed surface area electrode. Despite significant progress field there is still lack clear guidelines for regulating orientation, underlying mechanisms remain rather elusive. Therefore, comprehensive review urgently needed provide mechanistic insight into deposition. This summarizes burgeoning strategies steering categorizing corresponding five aspects: heteroepitaxial homoepitaxial interfacial cultivation, crystal facet anchoring, current density regulation. distinct advantages limitations each mechanism controlling orientation discussed detail. Finally, challenges future trends pertaining envisaged, aiming essence realize reversible anodes ultimately bridge gap between reality ideal aqueous Zn‐ion batteries.

Language: Английский

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Charged organic ligands inserting/supporting the nanolayer spacing of vanadium oxides for high-stability/efficiency zinc ion batteries

National Science Review, Journal Year: 2024, Volume and Issue: 11(10)

Published: Sept. 18, 2024

ABSTRACT Given their high safety, environmental friendliness and low cost, aqueous zinc-ion batteries (AZIBs) have the potential for high-performance energy storage. However, issues with structural stability electrochemical kinetics during discharge/charge limit development of AZIBs. In this study, vanadium oxide electrodes organic molecular intercalation were designed based on intercalating 11 kinds charged carboxylic acid ligands between 2D layers to regulate interlayer spacing. The negatively group can neutralize Zn2+, reduce electrostatic repulsion enhance kinetics. intercalated molecules increased Among them, 0.028EDTA · 0.28NH4+ V2O5 0.069H2O was employed as cathode a specific capacity (464.6 mAh g−1 at 0.5 A g−1) excellent rate performance (324.4 10 g−1). Even current density 20 g−1, after 2000 charge/discharge cycles 215.2 (capacity retention 78%). results study demonstrate that modulation spacing through properties vanadium-based materials.

Language: Английский

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Vanadium‐Based Cathodes Modification via Defect Engineering: Strategies to Support the Leap from Lab to Commercialization of Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(31)

Published: June 4, 2024

Abstract In advancing aqueous zinc‐ion batteries (AZIBs) toward commercial viability, vanadium (V)‐based cathodes are pivotal, offering broad redox ranges, and compatibility with water's electrochemical limits. Despite their great potentials, V‐based face challenges in transitioning from lab to commercialization. Defect engineering is exploited as a pivotal technique that endows the unexpected physical chemical properties break intrinsic bottleneck and, turn, enhance performances. This review delves into role of defect on materials, underscoring its potential mitigating critical challenges. It starts by encapsulating current characteristics AZIBs. Research efforts related various defects, such oxygen vacancies, cation cationic doping, anionic water intercalation, lattice disorders/amorphization, then rationalized discussed. The fabrication characterization techniques also summarized. By integrating conclusions existing works tailoring strategies, few perspectives provided for systematically employing pave way more efficient transition these promising materials laboratory breakthroughs commercially viable energy storage solutions.

Language: Английский

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Heterojunction tunnelled vanadium-based cathode materials for high-performance aqueous zinc ion batteries

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 665, P. 564 - 572

Published: March 25, 2024

Language: Английский

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Regulating the Gibbs Free Energy to Design Aqueous Battery‐Compatible Robust Host

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(31)

Published: May 21, 2024

Abstract Low‐cost, high‐voltage‐platform, and high‐capacity MnO 2 is the most promising cathode candidate for developing high‐energy‐density aqueous zinc‐ion batteries. However, Buckets effect of runaway phase transition irreversible dissolution restricts electrochemical performance . To address this issue, report presents a bottom‐up targeted assembly concept driven by Gibbs free energy design robust Ni‐MnO 2‐x F x host via Ni 2+ pre‐intercalation coupled with fluorine doping. The regulated coordination interlayer reinforcement interfacial defect repair, which prevents “layer‐to‐spinel” inhibits during long‐term cycling. As expected, provides superior H + /Zn storage across wide temperature range. A capacity 180.4 mAh g −1 retained after 1000 cycles at , high specific 293.9 250 50 °C 144.5 3000 0 0.5 This work new insights into stable battery‐compatible hosts batteries as well other battery chemistries.

Language: Английский

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Ambient Synthesis of Vanadium‐Based Prussian Blue Analogues Nanocubes for High‐Performance and Durable Aqueous Zinc‐Ion Batteries with Eutectic Electrolytes

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(45)

Published: Aug. 1, 2024

Abstract Prussian blue analogues (PBAs) have been widely studied in aqueous zinc‐ion batteries (AZIBs) due to the characteristics of large specific surface area, open aperture, and straightforward synthesis. In this work, vanadium‐based PBA nanocubes were firstly prepared using a mild situ conversion strategy at room temperature without protection noble gas. Benefiting from multiple‐redox active sites V 3+ /V 4+ , 5+ Fe 2+ /Fe cathode exhibited an excellent discharge capacity 200 mAh g −1 AZIBs, which is much higher than those other metal‐based PBAs nanocubes. To further improve long‐term cycling stability V‐PBA cathode, high concentration water‐in‐salt electrolyte (4.5 M ZnSO 4 +3 Zn(OTf) 2 ), water‐based eutectic (5.55 glucose+3 ) designed successfully inhibit dissolution vanadium deposition Zn onto zinc anode. More importantly, assembled AZIBs maintained 55 % their highest even after 10000 cycles 10 A with superior rate capability. This study provides new for preparation pure nanostructures direction enhancing PBA‐based current densities industrialization prospects.

Language: Английский

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Antioxidant Interfaces Enabled by Self‐Deoxidizing and Self‐Dehydrogenating Redox Couple for Reversible Zinc Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(29)

Published: May 11, 2024

Abstract Parasitic electrolyte reactions and dendrite growth make Zn metal anodes with high utilization rates (ZURs) more inaccessible, holding back the advance of aqueous zinc batteries (AZMBs). Here, sodium isoascorbate (SIA) is introduced to electrolytes as a self‐deoxidizing self‐dehydrogenating additive. Coexisting C 6 H 7 O − /C 5 couple spontaneously captures dissolved oxygen eliminates generated hydrogen by acting redox buffer, which leads creation antioxidant Interfaces due an in situ formed ZnCO 3 ‐dominated solid interphase (SEI). This SEI enables (100) faceted electrode dendrite‐free non‐corrosive plating/stripping, thus yielding Coulombic efficiency 99.7% up 1100 h at mAh cm −2 , well stable cycle sustaining for over 335 under ZUR 85.5%. Full‐cell properties are demonstrated matching poly(3,4‐ethylenedioxythiophene) intercalated vanadium oxide (PEDOT‐V 2 ) cathode, harvests capacity 302 g −1 (at 0.01 A holds 94.2% retention 600 cycles 1 practical conditions (N/P = 4.2 E/C 7.6 µL mg ). These findings provide new solution design industrializing AZMBs.

Language: Английский

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Decoding the mechanism of self-discharge and optimal electrolyte reconfiguration for advanced vanadium-based aqueous zinc batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 4304 - 4318

Published: Jan. 1, 2024

The self-discharge of aqueous zinc batteries during idle periods remains elusive, and warranting adequate voltage sufficient capacity is not trivial, due to the components battery system reciprocal influence among them.

Language: Английский

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