Mullite Mineral‐Derived Robust Solid Electrolyte Enables Polyiodide Shuttle‐Free Zinc‐Iodine Batteries

Advanced Materials, Год журнала: 2024, Номер 36(38)

Опубликована: Июль 25, 2024

Zinc dendrite, active iodine dissolution, and polyiodide shuttle caused by the strong interaction between liquid electrolyte solid electrode are chief culprits for capacity attenuation of aqueous zinc-iodine batteries (ZIBs). Herein, mullite is adopted as raw material to prepare Zn-based solid-state (Zn-ML) ZIBs through zinc ion exchange strategy. Owing merits low electronic conductivity, diffusion energy barrier, adsorption capability, Zn-ML can effectively isolate redox reactions anode AC@I

Язык: Английский

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Ultrastable Electrolytic Zn–I₂ Batteries Based on Nanocarbon Wrapped by Highly Efficient Single‐Atom Fe‐NC Iodine Catalysts

Advanced Materials, Год журнала: 2024, Номер 36(30)

Опубликована: Май 8, 2024

Aqueous Zn-iodine (Zn-I

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Bidentate Coordination Structure Facilitates High‐Voltage and High‐Utilization Aqueous Zn‐I2 Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Июнь 13, 2024

Abstract The aqueous zinc‐iodine battery is a promising energy storage device, but the conventional two‐electron reaction potential and density of iodine cathode are far from meeting practical application requirements. Given that rich in redox reactions, activating high‐valence has become research direction for developing high‐voltage batteries. In this work, by designing multifunctional electrolyte additive trimethylamine hydrochloride (TAH), stable four‐electron‐transfer I − /I 2 + reactions with high theoretical specific capacity achieved through unique amine group, Cl bidentate coordination structure (TA)ICl. Characterization techniques such as synchrotron radiation, situ Raman spectra, DFT calculations used to verify mechanism structure. This stabilizes zinc anode promoting desolvation process shielding mechanism, enabling cycle steadily at maximum areal 57 mAh cm −2 97 % utilization rate. Finally, Zn−I full cell achieves 5000 cycles an N/P ratio 2.5. contributes further development

Язык: Английский

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Urea Chelation of I⁺ for High-Voltage Aqueous Zinc–Iodine Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

The multielectron conversion electrochemistry of I–/I0/I+ enables high specific capacity and voltage in zinc–iodine batteries. Unfortunately, the I+ ions are thermodynamically unstable highly susceptible to hydrolysis. Current endeavors primarily focus on exploring interhalogen chemistry activate I0/I+ couple. However, practical working is below theoretical level. In this study, redox couple fully activated, efficiently stabilized by a chelation agent cost-effective urea conventional aqueous electrolyte. A record-high plateau 1.8 V vs Zn/Zn2+ has been realized. Theoretical calculations combined with spectroscopy studies electrochemical tests reveal that coordination between electron-deficient electron-rich O N atoms molecules favorable for inhibits self-disproportionation I+, which turn promotes rapid kinetics excellent reversibility I0/I+. Moreover, decreases water activity electrolyte forming hydrogen bonds further suppress hydrolysis I+. Accordingly, 419 mAh g–1 delivered at 1C, 147 retained after 10,000 cycles 5C. This work offers effective insights into formulating halogen-free electrolytes high-performance

Язык: Английский

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Immobilizing Polyiodides with Expanded Zn²⁺ Channels for High‐Rate Practical Zinc‐Iodine Battery

Advanced Energy Materials, Год журнала: 2023, Номер 14(3)

Опубликована: Дек. 3, 2023

Abstract Aqueous zinc‐iodine battery (AZIB) has the advantage of low cost and high specific capacity but suffer from soluble polyiodides shuttling sluggish redox kinetics. Herein, these two limitations are addressed by employing a cathode additive (zirconium hydrogen phosphate, denoted as EI‐ZrP) which provides dual functions: an agent for polyiodide confinement, abundant channels zinc ion transport. An enlarged crystalline interlayer (from typical 7.5 to 18.3 Å) EI‐ZrP significantly enhances ionic conductivity simultaneously immobilizes polyiodides, leading accelerated conversion process. AZIB with in iodine exhibits retention over 10,000 cycles (with 0.02‰ decay rate per cycle). Quasi‐solid‐state Zn‐I 2 pouch cell been constructed using hydrogel‐paper separator additive, delivers areal under repeated bending. As proof‐of‐concept demonstration, paper is integrated power wireless flexible pressure sensor system (WFPSS). This strategy may shed light on rational design conversion‐type materials both energy storage portable electronics.

Язык: Английский

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Recent research on aqueous zinc-ion batteries and progress in optimizing full-cell performance

Chinese Chemical Letters, Год журнала: 2024, Номер unknown, С. 110039 - 110039

Опубликована: Май 1, 2024

Язык: Английский

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Built-in electrocatalytic nanoreactors anchoring ultrahigh iodine utilization for long-lasting zinc-iodine batteries

Chemical Engineering Journal, Год журнала: 2024, Номер 483, С. 149320 - 149320

Опубликована: Фев. 6, 2024

Язык: Английский

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Unleashing the high energy potential of zinc–iodide batteries: high-loaded thick electrodes designed with zinc iodide as the cathode

Chemical Science, Год журнала: 2024, Номер 15(12), С. 4581 - 4589

Опубликована: Янв. 1, 2024

An optimized, fully zincified zinc iodide loaded onto a hierarchical carbon scaffold with high active component loading and content (82 wt%) to prepare thick cathode for enabling high-energy Zn–I 2 batteries was proposed.

Язык: Английский

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Catalytical cobalt phthalocyanine/carbon nanotube cathode for high-performance zinc-iodine batteries

Energy storage materials, Год журнала: 2024, Номер 69, С. 103372 - 103372

Опубликована: Март 29, 2024

Язык: Английский

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Holistic optimization strategies for advanced aqueous zinc iodine batteries

Energy storage materials, Год журнала: 2024, Номер 72, С. 103596 - 103596

Опубликована: Июнь 25, 2024

Zinc-based batteries are gaining prominence as promising alternatives to lithium-ion (LIBs) in the pursuit of Net-Zero goals, owing their cost-effectiveness, scalability, and reduced resource dependency. Aqueous rechargeable zinc-iodine (Zn-I2) batteries, particular, emerging an enticing choice for future energy storage systems, thanks eco-friendly nature, impressive theoretical capacity, energy/power density. Nevertheless, several challenges, including well-known polyiodide shuttling phenomenon, suboptimal thermodynamic stability, issues like corrosion dendrite formation on Zn metal anodes, impede practical implementation. Tremendous progress has been achieved circumvent these recent years, though a comprehensive review article both entry-level experienced researchers is still lacking up date. This aims at discussing fundamentals, solutions enable understanding electrochemistry mechanisms, systematically summarizing past, present, technologies strategies involving iodine cathode design modification, interlayer construction/separator electrolytes optimization, anodes protection. Additionally, based achievements, some directions efforts developing high-performance Zn−I2 proposed accelerate commercial applications.

Язык: Английский

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