Single-crystalline Mn2V2O7 with high operating voltage and energy density as a cathode material for aqueous zinc-ion batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 109, P. 115241 - 115241

Published: Jan. 5, 2025

Language: Английский

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Distorting Local Structures to Modulate Ligand Fields in Vanadium Oxide for High-Performance Aqueous Zinc-Ion Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Layered hydrate vanadates are promising cathode materials for aqueous zinc-ion batteries (AZIBs). Various intercalants have been preinserted into the interplanar space of with significantly enhanced kinetics and stabilized structures. However, such an enhancement is induced by various intercalants, relationship between property type intercalant still needs to be revealed. In this work, distortion octahedra preintercalation benzyltrimethylammonium (BTA+) cations vanadium pentoxide (V2O5·nH2O, VOH) change in ligand field studied using synchrotron X-ray pair distribution function (PDF) absorption fine structure (XAFS). Variations local coordination alter field, decreasing energy lowest unoccupied orbitals (e*), which leads increased electrochemical potential. Additionally, introduced BTA+ facilitates fast ion diffusion stabilizes layer structure. A a distorted delivers specific capacity 408 mAh/g at 0.5 A/g, retention 95% after 3000 cycles 8 A/g.

Language: Английский

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V‐O‐Ru Heterogeneous Interphase Reversible Reconstruction Endowing Zn_0.85V₁₀O₂₄·7.4H₂O/0.65RuO₂ Cathode Robust H⁺/Zn²⁺ Storage

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

Published: April 15, 2025

Abstract Intercalation‐type layered vanadium oxides have been widely explored as cathode materials for aqueous zinc–ion batteries (AZIBs). However, attaining both high power density and superior stability remains a formidable challenge. Herein, are pre‐intercalated with Zn 2+ to form 0.85 V 10 O 24 ·7.4H 2 (ZVO), which is then combined RuO nanoparticles construct ZVO/RuO heterostructure featuring interphase V─O─Ru bonds. exhibits dynamic stable coupling at the via chemical bonds reconstruction during discharging/charging processes. The dynamically reversible of provides fast electron transfer channel between ZVO cathode, demonstrated by ex situ X‐ray photoelectron spectroscopy (XPS) functional theory (DFT) calculations, making an additional acceptor donor, accelerating migration H + /Zn in cathode. Therefore, ultra‐high capacity (411 mAh g −1 0.5 A , 225 20 ) long cycling (a retention 92.2% over 20000 cycles) performances achieved. This route promising approach achieving excellent materials.

Language: Английский

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An Active Organic Polymer-Intercalated Vanadium Oxide Enabled Dual-Active High-Performance Cathode Materials for Aqueous Zinc-Ion Batteries

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Language: Английский

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Remote Polyoxometalates Modulated the d/p-Band Center Proximity in Vanadia-Based Catalyst for Simultaneous Elimination of NO_x and Chlorobenzene

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 7470 - 7481

Published: April 21, 2025

Language: Английский

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Synchronous regulation of V2O5 cathode and Zn anode using sodium gluconate as an additive for long-life aqueous zinc-ion batteries

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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