Low‐Cost Multi‐Function Electrolyte Additive Enabling Highly Stable Interfacial Chemical Environment for Highly Reversible Aqueous Zinc Ion Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(49)

Published: Sept. 1, 2023

Abstract The practicality of aqueous zinc ion batteries (AZIBs) for large‐scale energy storage is hindered by challenges associated with anodes. In this study, a low‐cost and multi‐function electrolyte additive, cetyltrimethyl ammonium bromide (CTAB), presented to address these issues. CTAB adsorbs onto the anode surface, regulating Zn 2+ deposition orientation inhibiting dendrite formation. It also modifies solvation structure reduce water reactivity minimize side reactions. Additionally, optimizes key physicochemical parameters electrolyte, enhancing stability electrode/electrolyte interface promoting reversibility in AZIBs. Theoretical simulations combined operando synchrotron radiation‐based situ Fourier transform infrared spectra electrochemical impedance further confirm modified coordination environment adsorption effect cations at anode/electrolyte interface. As result, assembled Zn‐MnO 2 battery demonstrates remarkable specific capacity 126.56 mAh g −1 high current density 4 A after 1000 cycles. This work highlights potential as promising solution improving performance AZIBs applications.

Language: Английский

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Covalent triazine frameworks for advanced energy storage: challenges and new opportunities

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(8), P. 3181 - 3213

Published: Jan. 1, 2023

This Review provides a comprehensive overview of recent advancements in CTF materials and CTF-based batteries. The aims to make batteries viable for next-generation high-energy battery systems.

Language: Английский

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An Aqueous Electrolyte Regulator for Highly Stable Zinc Anode Under −35 to 65 °C

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(40)

Published: Sept. 13, 2023

Abstract The reversibility and long‐term cycling stability of aqueous zinc‐ion batteries (AZIBs) in a wide temperature range have rarely been explored. Herein, diethylene glycol monoethyl ether (DG) is introduced as an electrolyte additive to enhance Zn performance within −35 65 °C. Operando synchrotron Fourier transform infrared spectroscopy analysis combined with molecular dynamics simulations reveal that the introduction DG disrupts initial hydrogen bonding network electrolyte, restructuring solvation structure surrounding 2+ ions mitigating water‐induced parasitic reactions. Adding reduces freezing point without compromising its incombustibility. Moreover, operando electrochemical quartz crystal microbalance dissipation monitoring (EQCM‐D) X‐ray photoelectron demonstrated coordinated OTF − undergo reductive decomposition, forming self‐healing solid interphase comprising inorganic/organic ZnF 2 ‐ZnS, which can effectively suppress notorious side reactions guide uniform deposition. Consequently, symmetric Zn/Zn cells demonstrate excellent for 3500 h under 1 mA cm −2 at 25 °C, 1000 both Full DG‐containing exhibit long lifespan 5000 cycles A g −1 .

Language: Английский

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Hydrated Eutectic Electrolyte Induced Bilayer Interphase for High‐Performance Aqueous Zn‐Ion Batteries with 100 °C Wide‐Temperature Range

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 13, 2023

Abstract The practical implementation of aqueous zinc‐ion batteries (AZIBs) encounters challenges such as dendrite growth, parasitic reactions, and severe decay in battery performance under harsh environments. Here, a novel hydrated eutectic electrolyte (HEE) composed Zn(ClO 4 ) 2 ·6H O, ethylene glycol (EG), InCl 3 solution is introduced to effectively extend the lifespan AZIBs over wide temperature range from −50 50 °C. Molecular dynamics simulations spectroscopy analysis demonstrate that H O molecules are confined within liquid network through dual‐interaction, involving coordination with Zn 2+ hydrogen bonding EG, thus weakening activity free water extending electrochemical window. Importantly, cryo‐transmission electron microscopy techniques reveal HEE situ forms zincophobic/zincophilic bilayer interphase by dissociation‐reduction molecules. Specifically, zincophilic reduces energy barrier for nucleation, promoting uniform deposition, while zincophobic prevents active contacting surface, inhibiting side reactions. Furthermore, relationships between structural evolution interfacial chemistry at electrode/electrolyte further discussed this work. scalability design strategy can bring benefits operating range.

Language: Английский

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Toward Low‐Temperature Zinc‐Ion Batteries: Strategy, Progress, and Prospect in Vanadium‐Based Cathodes

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(8)

Published: Dec. 28, 2023

Abstract Low‐temperature vanadium‐based zinc ion batteries (LT‐VZIBs) have attracted much attention in recent years due to their excellent theoretical specific capacities, low cost, and electrochemical structural stability. However, working temperature surrounding often results retarded transport not only the frozen aqueous electrolyte, but also at/across cathode/electrolyte interface inside cathode interior, significantly limiting performance of LT‐VZIBs for practical applications. In this review, a variety strategies solve these issues, mainly including interface/bulk structure engineering electrolyte optimizations, are categorially discussed systematically summarized from design principles in‐depth characterizations mechanisms. end, several issues about future research directions advancements characterization tools prospected, aiming facilitate scientific commercial development LT‐VZIBs.

Language: Английский

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Anion Receptor Weakens ClO₄⁻ Solvation for High‐Temperature Sodium‐Ion Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(5)

Published: May 17, 2023

Abstract Sodium‐ion batteries (SIBs) with wide operating temperature are regarded as promising candidates for large‐scale energy storage systems. However, SIBs under elevated aggravate the electrolyte decomposition unstable cathode‐electrolyte interphase (CEI), causing a rapid capacity degradation. Herein, anion receptor tris(pentafluorophenyl)borane (TPFPB) is selected additive to construct robust NaF‐rich CEI. The strong interactions between and TPFPB via electron‐deficient boron atoms weaken ClO 4 − solvation promote coordination capability solvents Na + cations, demonstrating greatly improved oxidative stability. 3 V 2 (PO ) cathode in TPFPB‐containing delivers long‐term stability retention of 86.9% after 100 cycles at high cut‐off voltage 4.2 (vs. /Na) 60 °C. Besides, also works well enhanced performance over range from −30 This study proposes prospective method by manipulating chemistry constructing high‐temperature rechargeable SIBs.

Language: Английский

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Single‐Atom Zinc Sites with Synergetic Multiple Coordination Shells for Electrochemical H₂O₂ Production

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(47)

Published: Oct. 4, 2023

Abstract Precise manipulation of the coordination environment single‐atom catalysts (SACs), particularly simultaneous engineering multiple shells, is crucial to maximize their catalytic performance but remains challenging. Herein, we present a general two‐step strategy fabricate series hollow carbon‐based SACs featuring asymmetric Zn−N 2 O moieties simultaneously modulated with S atoms in higher shells Zn centers (n≥2; designated as −S). Systematic analyses demonstrate that synergetic effects between N species first shell and lead robust discrete sites optimal electronic structure for selective reduction H . Remarkably, moiety second possesses nearly ideal Gibbs free energy key OOH* intermediate, which favors formation desorption on generation. Consequently, −S SAC exhibits impressive electrochemical production high selectivity 96 %. Even at current density 80 mA cm −2 flow cell, it shows rate 6.924 mol g cat −1 h an average Faradaic efficiency 93.1 %, excellent durability over 65 h.

Language: Английский

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Constructing π–π Superposition Effect of Tetralithium Naphthalenetetracarboxylate with Electron Delocalization for Robust Dual‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(22)

Published: March 25, 2024

Abstract Organics are gaining significance as electrode materials due to their merits of multi‐electron reaction sites, flexible rearrangeable structures and redox reversibility. However, organics encounter finite electronic conductivity inferior durability especially in organic electrolytes. To circumvent above barriers, we propose a novel design strategy, constructing conductive network with extended π–π superposition effect by manipulating intermolecular interaction. Tetralithium 1,4,5,8‐naphthalenetetracarboxylate (LNTC) interwoven carbon nanotubes (CNTs) forms LNTC@CNTs composite firstly for Li‐ion storage, where multiple conjugated carboxyls contribute sufficient storage the unique feature enables electrolyte charge mobility conveniently combining electron delocalization π‐conjugated system, enhanced between LNTC CNTs endows laudable structural robustness. Accordingly, maintain an excellent capacity retention 96.4 % after 400 cycles. Electrochemical experiments theoretical simulations elucidate fast kinetics reversible stability owing effect, while reversibly rearranged into enolates during charging/discharging. Consequently, dual‐ion battery this anode expanded graphite cathode exhibits peak specific 122 mAh g −1 long cycling life 84.2 900

Language: Английский

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Rationally Designed Cyclooctatetrathiophene‐Based Porous Aromatic Frameworks (COTh‐PAFs) for Efficient Photocatalytic Hydrogen Peroxide Production

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: March 7, 2024

Constructing stable and efficient photocatalysts for H

Language: Английский

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A covalent organic framework as a dual-active-center cathode for a high-performance aqueous zinc-ion battery

Chemical Science, Journal Year: 2024, Volume and Issue: 15(12), P. 4341 - 4348

Published: Jan. 1, 2024

Organic electrode materials have shown significant potential for aqueous Zn ion batteries (AZIBs) due to their flexible structure designability and cost advantage. However, sluggish ionic diffusion, high solubility, low capacities limit practical application. Here, we designed a covalent organic framework (TA-PTO-COF) generated by covalently bonding tris(4-formylbiphenyl)amine (TA) 2,7-diaminopyrene-4,5,9,10-tetraone (PTO-NH

Language: Английский

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