Strategy for Using Electrolyte Additives to Regulate Zinc-Ion Battery Anode Interfaces via Tautomerism

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

Published: March 14, 2025

The performance of zinc-ion batteries (ZIBs) is often hindered by issues such as dendrite formation, hydrogen evolution, and limited cycling stability. 1,3-Dihydroxyacetone (DHA) not only stabilizes the anode modulating anode/electrolyte interface (AEI) but also enhances electrochemical battery through its spontaneous reversible keto-enol tautomerization, reducing concentration gradient on surface. Using a combination DFT calculations experimental characterization, regulation hydrated Zn2+ structure adsorption at AEI this additive investigated. Overall, incorporating DHA extends stability Zn||Zn symmetric to 400 h, even depth discharge 56.7% (DOD). Zn||VNNC full exhibit stable for 700 cycles 5 A g-1 with low N/P ratio (2.69), while Zn||AC capacitors (ZICs) significantly enhanced. This study evaluates potential in ZIBs dynamic characteristics molecular structures.

Language: Английский

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Vanadium-Based Prussian blue analogue for high energy aqueous Zinc-Iodine batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161720 - 161720

Published: March 1, 2025

Language: Английский

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Dual ions regulation strategy realizes long-life aqueous Zn-ion batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161633 - 161633

Published: March 1, 2025

Language: Английский

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Interhalogen and the salting-out effect enable high-capacity and long-cycle Zn//I2 aqueous microbatteries

Matter, Journal Year: 2025, Volume and Issue: unknown, P. 102104 - 102104

Published: April 1, 2025

Language: Английский

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Surface Electron Affinity Modulation: Balancing Iodine Oxidation and Reduction Reaction Kinetics on Mo₂C Cathode Host Catalyst toward Efficient Zn‐I₂ Batteries

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

Published: April 13, 2025

Abstract The energy efficiency of aqueous Zn‐I 2 batteries (AZIBs) is traditionally enhanced by cathode host catalysts with high electron affinity, based on the consensus that stronger affinity improves electron‐rich polyiodides adsorption and prevents shuttle effects, thus promoting I /I⁻ conversion reaction. Herein, carbon‐coated Mo C nanocrystals supported carbon spheres (CS/Mo C@C) as an iodine catalyst developed. Interestingly, a deviation from expectation observed: moderate CS/Mo C@C, rather than higher C, actually leads to faster reaction kinetics, while maintaining stable species. This phenomenon can be attributed optimal electron‐donating properties charge transfer dynamics associated lower affinity. Through systematic electrochemical spectroscopic analysis, it uncovered conformal layer covering key adjusting capability, enhancing transfer, improving interfacial kinetics C@C catalyst. Consequently, assembled AZIBs employing C@C/I demonstrate smaller overpotential gap (0.06 V) superior cyclic stability (89.6% capacity retention after 25 000 cycles at 5 A g⁻ 1 ) compared C/I (0.09 V/40.6% 5000 cycles). study highlights significance modulating surface in design for high‐efficiency AZIBs.

Language: Английский

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Optimizing Amphoteric Cellulose Additives with Complexation–Adsorption Mechanisms to Stabilize the Zn Anode

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

Published: April 15, 2025

The growth of Zn dendrites and interfacial side reactions are two critical challenges impeding the commercial application aqueous zinc batteries (AZBs). amphoteric electrolyte additive is considered a convenient efficient strategy to stabilize anode. However, most studies overlook impacts their charge compositions corresponding mechanisms on Zn2+ electroplating behavior. Here, we use cellulose as an exemplary research object, number positive/negative groups can be easily effectively controlled. We elucidate in detail interplay between complexation adsorption AZBs. Specifically, not only guides regulates deposition but also forms uniform protective layer surface. As result, optimal enables dendrite-free side-reaction-suppressed AZBs, leading Zn||Zn cell with high depth discharge 68.4%, Zn||NH4V4O10 reversible specific capacity 310 mAh g-1. This work demonstrates promising by elucidating role composition design, advancing development stable

Language: Английский

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Self-assembly of super-hydrophobic and zincophilic surface monolayer for durable Zn anodes

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104281 - 104281

Published: April 1, 2025

Language: Английский

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Weak Dipole Effect Customized Zinc Ion‐Rich Protective Layer for Lean‐Electrolyte Zinc Metal Batteries

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

Published: April 25, 2025

Abstract The industrial development of Zn‐ion batteries requires high performance even with lean‐electrolyte. Nevertheless, lean‐electrolyte can exacerbate concentration polarization at the interface electrode/electrolyte, leading to significant Zn corrosion and battery failure. Here, a stable ion‐rich protective layer (TMAO‐Zn) is constructed by unique zwitterion structure trimethylamine N‐oxide (TMAO). TMAO characterized direct connection between positive negative charges (N + ‐O − ) minimal dipole moment, which renders weak interactions form TMAO‐Zn 2+ , thereby reducing promoting rapid uniform deposition . Furthermore, O exhibits higher electrophilic index, indicating stronger propensity for hydrogen bond active free water in inner Helmholtz (IHL), mitigating under extreme conditions low electrolyte‐to‐capacity ratio (E/C ratio). Consequently, symmetrical enables cycling over 250 h 15 µL mA −1 Additionally, Zn/I₂ pouch E/C 21.2 provides ultra‐high specific capacity 96 cycles (capacity retention rate 98.3%). This study offers new concept propel practical application

Language: Английский

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Theoretical calculations-driven rational screening of d-block single-atom electrocatalysts based on d-p orbital hybridization for durable aqueous zinc-iodine batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Nb–NC single-atom electrocatalysts are rationally screened by theoretical calculations based on d–p orbital hybridization towards long-lasting aqueous Zn–I 2 batteries.

Language: Английский

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A MXene Modulator Enabled High‐Loading Iodine Composite Cathode for Stable and High‐Energy‐Density Zn‐I₂ Battery

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

Abstract Achieving both high iodine loading cathode and Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential energy‐dense Zn‐I 2 batteries. However, this combination exacerbates detrimental shuttle effect polyiodide intermediates, significantly impairing battery's reversibility stability. Herein, study reports an advanced high‐loading (denoted as MX‐AB@I) enabled by a multifunctional Ti 3 C T x MXene modulator, which presents stability energy density in Through comprehensive experimental theoretical analyses, intrinsic regulating mechanisms are elucidated modulator effectively suppresses shuttling, enhances conversion kinetics, dramatically improves reversibility. With aid MX‐AB@I composite achieves mass 23 mg cm −2 realizes practically areal capacity 4.0 mAh . When paired with thin (10 µm), configuration DOD 78.7% 171.3 Wh kg −1 , surpassing majority battery systems reported literature. This effective approach designing cathodes for batteries leveraging modulators regulate critical electrochemical reaction processes.

Language: Английский

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