Calcium Alginate Hydrogel Coating Comprehensively Optimizes Zn Deposition Behavior of Aqueous Zinc-Ion Batteries Anode

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(31), P. 13611 - 13622

Published: July 29, 2024

Aqueous zinc-ion batteries (AZIBs) with Zn metal as the anode have great potential for large-scale energy storage due to their unique advantages. However, anodes face unfavorable conditions such hydrogen evolution reaction (HER) and dendrite growth, which limit practical application of AZIBs. We constructed a calcium alginate (CA) hydrogel protective layer on foil surface. The carboxyl hydroxyl groups in CA can form bonds H2O inhibit HER. Meanwhile, coating also promotes desolvation process Zn(H2O)62+, results uniform dispersion Zn2+ flux. homogenize electric field distribution surface growth dendrites. Therefore, CA-Zn symmetric be stably cycled 2200 h at 0.5 mA cm–2, showing excellent cycling performance. Overall, introduction effectively optimized faced by anode.

Language: Английский

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A comparative study on the structural, chemical, morphological and electrochemical properties of α-MnO2, β-MnO2 and δ-MnO2 as cathode materials in aqueous zinc-ion batteries

Materials for Renewable and Sustainable Energy, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 17, 2025

Abstract Aqueous zinc-ion batteries (AZIBs) are considered to be highly promising electrochemical energy storage device due their affordability, inherent safety, large zinc resources, and optimal specific capacity. Among various cathode materials, manganese dioxide (MnO 2 ) stands out for its high voltage, environmental benignity, theoretical This study systematically investigates the phase formation structural parameters of α-MnO , β-MnO δ-MnO synthesized via hydrothermal method, employing Rietveld refinement. FTIR Raman spectroscopy confirms Mn-O O-H bond formation. BET analysis reveals surface areas, pore size distribution is calculated with BJH method. High-resolution XPS spectra exhibit a spin split ~ 11.9 eV Mn 2p confirming presence MnO . Electrochemical studies shows an initial discharge capacities 230.5, 188.74 263.30 mAh g − 1 at 0.1 A The EIS revealed capacitive behaviour electrode reaction kinetics where R cT value 484.14, 327.6, 162.5 Ω These give insights into relation properties performance viability in grid applications. Graphical

Language: Английский

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N-doped VS2 cathode with shell-anchored structure for enhancing the storage performance of Zn-Ion batteries

Journal of Electroanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 119007 - 119007

Published: Feb. 1, 2025

Language: Английский

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MOF-Based Construction of Oxygen Vacancies ZnMn₂O₄ for Superior Zinc Storage

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13997 - 14007

Published: Feb. 19, 2025

Manganese-based oxides are widely used as cathode materials for aqueous zinc-ion batteries (ZIBs) due to their high theoretical specific capacity, abundant reserves, and operating voltage. However, practical applications limited by inherent issues such active material dissolution, structural collapseor changes, slow reaction kinetics. In this study, a zinc batteries, ZnO–ZnMn2O4 (MZ), is synthesized based on metal–organic framework (MOF). Synergistic strategies involving atomic composition modulation defect engineering employed address the of ZnMn2O4, stabilize structure, inhibit disproportionation Mn3+, reduce Jahn–Teller effect. Additionally, benefits from enhanced oxygen vacancies smaller particle size, which promote faster Electrochemical tests show that MZ-550 delivers capacity 314.5 mA h g–1 at 100 cycling stability, with retention 96.6% after 1500 cycles 1000 g–1. addition, demonstrates outstanding electrochemical performance under extreme conditions, capacities 86.4 −20 °C 331.1 40 °C. This study provides insights development high-performance ZIBs in advanced energy storage systems.

Language: Английский

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Non-Destructive Electrochemical Diagnosis of Failure Mechanisms in Aqueous Zinc Batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104190 - 104190

Published: March 1, 2025

Language: Английский

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Solvent-Free Ion-Conductive Xerogels with High Conductivity and Adhesion Enable Multimodal Sensing

Gels, Journal Year: 2025, Volume and Issue: 11(4), P. 242 - 242

Published: March 26, 2025

Ion-conductive gels (ICGs) are essential for achieving human–machine interfaces, bioelectronic applications, or durable wearable sensors. However, traditional solvent-dependent ICGs face bottlenecks such as dehydration-induced failure and challenges in a balance between conductivity mechanical properties. Here, this work developed novel ternary ion-conductive xerogel (PEM-Li ICXG) system based on polyethylene glycol (PEG), poly (2-methoxyethyl acrylate) (PMEA), LiTFSI. PEM-Li ICXGs exhibit high (2.7 × 10−2 S/m), adhesive capability (0.34 MPa), solvent-free characteristics. Remarkably, the incorporation of ions into simultaneously optimizes their performance. We demonstrate application flexible sensors strain temperature sensing. The proposed synthesis strategy is straightforward may further inspire design high-performance ICXGs.

Language: Английский

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High‐Energy‐Density Aqueous Zinc‐Ion Batteries: Recent Progress, Design Strategies, Challenges, and Perspectives

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

Published: April 25, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) are emerging as a promising energy storage technique supplementary to Li‐ion batteries, attracting much research attention owing their intrinsic safety, cost economy, and environmental friendliness. However, densities for AZIBs still do not fulfill practical requirements because of the low specific areal capacity, limited working potential, excessive negative‐to‐positive electrode capacity (N/P) ratio. In this review, comprehensive overview basic major challenges achieving high‐energy‐density is provided. Following that, recent progress in optimization each component overall configuration summarized, crucial design principles discussed. Apart from conventional emphasis on part, especially cathode materials, separately, discussion about synergistic interactions among all components conducted. Finally, outlook direction given provide valuable guidance further holistic development aqueous batteries.

Language: Английский

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Production of eco-friendly cathode materials from cellulose skeleton induced manganese dioxide to produce zinc ion battery: Physicochemical, morphological, and electrochemical study

Carbohydrate Polymer Technologies and Applications, Journal Year: 2024, Volume and Issue: unknown, P. 100583 - 100583

Published: Oct. 1, 2024

Language: Английский

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Unraveling a High-Performance Self-Supported Flexible Zinc-Ion Battery Cathode with Tailored Electrospun MnO_x/N-Doped Carbon Nanofibers

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(16), P. 7064 - 7073

Published: Aug. 15, 2024

The increasing demand for wearable and bendable electronics has generated significant interest in flexible zinc-ion batteries. However, their development been hindered by the inadequate capacity cycling stability of electrodes under repeated mechanical deformation. Herein, we present a self-supported, binder-free, manganese oxide-based cathode This innovation leverages an optimum amount well-dispersed oxide nanoparticles within nitrogen-doped carbon nanofiber matrix, achieved fine-tuning mass ratio polyacrylonitrile acetate during electrospinning. sample exhibits robustness desirable morphology without any bead formations. synergistic interfaces between matrix facilitate rapid charge transfer minimize active material detachment, leading to unprecedented combination high-rate capability stability. Consequently, free-standing can deliver high specific 392 mA h g–1 at 0.1 A maintain stable (∼200 g–1) up 1800 cycles current density 2.0 g–1. Furthermore, employing obtained with quasi-solid gel electrolyte, batteries achieve performance average ∼186 over 140 cycles, even extreme bending angles 180°. finding surpasses existing offers promising path advanced energy storage solutions electronics.

Language: Английский

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The Utilization of Ionic Liquid in Aqueous Electrolyte with Nitrogen and Sulfur Co-Doped Reduced Graphene Oxide Combination with Carbon Nanotubes for Improving Charge Storage and Long-Life Zinc Ion Batteries

Published: Jan. 1, 2024

Rechargeable aqueous Zn||MnO2 batteries are promising alternatives to lithium-ion because of their safety, environmental friendliness, recyclable, and low cost. However, unstable pure α-MnO2 causes poor practical performance a short life cycle. In this work, firstly, we design synthesize nanofibers nitrogen sulfur co-doped reduced graphene oxide (N&S-rGO) using simple hydrothermal process. Then, /N&S-rGO/CNT composite was fabricated ball milling process as cathode material for zinc ion (ZIBs). Secondly, modified the water-based electrolyte by adding 1-ethyl-3-methylimidazolium ethyl sulfate ([EMIM][SO4]) improve cycle stability suppressing dendrite ZIBs. As result, electrochemical performances ZIBs with 5% (w/v) [EMIM][SO4] containing possessed high specific capacity, reaching 110 mAh g-1 at 25 mAg-1. addition, excellent 150 mA exhibited utilization 5–15% in could be extended 1000 cycles. The cylindrical cell ZIB achieved discharge capacity 80.2 100 maintained capacitive retention 70% over cycles 300 mA. findings open way ZIBs' application.

Language: Английский

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