A Double‐Charged Organic Molecule Additive to Customize Electric Double Layer for Super‐Stable and Deep‐Rechargeable Zn Metal Pouch Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(8)

Published: Nov. 12, 2023

Abstract The electrochemical performance of aqueous zinc metal batteries (AZMBs) is highly dependent on the electric double layer (EDL) properties at Zn electrode/electrolyte interface. Herein, a novel reconfigured EDL constructed via double‐charged theanine (TN) additive for super‐stable and deep‐rechargeable AZMBs. Experiments theoretical computations unravel that positively charged TN not only serves as preferential anchor to form water‐poor Helmholtz plane onto anode, but also its anionic end could coordinate with 2+ tailor solvation structure in diffusion further reconstruct inner H‐bonds networks, thus effectively guiding uniform deposition suppressing water‐induced side reactions. Consequently, Zn//Zn cells acquire outstanding cycling stabilities nearly 800 h high depth discharge 80%. Moreover, Zn//VOX full deliver substantial capacity retention (94.12% after 1400 cycles 2 A g −1 ) under practical conditions. Importantly, designed 2.7 Ah pouch cell harvests recorded energy density 42.3 Wh Kg 79.5 L –1 , remarkable 85.93% 220 50 mA . This innovative design concept reshape chemistry would inject fresh vitality into developing advanced AZMBs beyond.

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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Highly Compact Zinc Metal Anode and Wide‐Temperature Aqueous Electrolyte Enabled by Acetamide Additives for Deep Cycling Zn Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 25, 2024

Abstract Rechargeable aqueous zinc (Zn) batteries are a promising candidate for large‐scale energy storage, but the noncompact and dendritic Zn deposition, water‐induced parasitic reaction, narrow operating temperature range severely hinder their practical application. Here, it is demonstrated that these challenges can be conquered by introducing low‐cost acetamide (Ace) into electrolytes. The non‐sacrificial Ace molecules with both donor acceptor groups disrupt original H‐bonded network of water, replace solvating‐H 2 O in 2+ ‐solvation sheath, form dynamic adsorption on Zn, create an H O‐poor electrical double‐layer. Consequently, presence suppresses water erosion homogenizes nucleation/growth, reduces reactivity, depresses freezing point electrolyte. formulated Ace‐containing electrolyte features wide from −20 to 60 °C enables highly compact dendrite‐free electrodeposition even at 25 mAh cm −2 using non‐pressure electrolytic cell. Moreover, allows electrodes achieve long‐term lifespan across −20–60 excellent deep cycling stability under 85.3% depth‐of‐discharge (25 ) over 400 h, supports stable operation Zn–Iodine full harsh conditions.

Language: Английский

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Gel polymer electrolytes for rechargeable batteries toward wide-temperature applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 5291 - 5337

Published: Jan. 1, 2024

Design principles, engineering strategies, challenges, and opportunities of gel polymer electrolytes for rechargeable batteries toward wide-temperature applications are thoroughly reviewed.

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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A Trifunctional Electrolyte Enables Aqueous Zinc Ion Batteries with Long Cycling Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(30)

Published: March 25, 2024

Abstract Aqueous zinc ion batteries hold promise as alternative systems to lithium‐based batteries. However, practical development faces critical challenges due parasitic side reactions and dendrite growth in anodes. While introducing electrolyte additives is promising, monofunctional offer limited protection the anode from a single aspect. Herein, disodium succinate additive presented establish hydrophobic zincophilic dual electric layer structure on Zn surface, regulate solvation of 2+ , act pH buffer during cycling. As result, symmetrical cell with an containing 0.2 m SADS shows durable life over 2200 h, Zn||MnO 2 full still maintains 80% capacity retention after 1000 cycles. In addition, both show wide applicability match NVO I cathode. This work provides low‐cost multifunctional additive, facilitating high‐performance aqueous

Language: Английский

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Interfacial Engineering of Zn Metal via a Localized Conjugated Layer for Highly Reversible Aqueous Zinc Ion Battery

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 3, 2024

Abstract Aqueous zinc‐ion batteries are regarded as promising and efficient energy storage systems owing to remarkable safety satisfactory capacity. Nevertheless, the instability of zinc metal anodes, characterized by issues such dendrite growth parasitic side reactions, poses a significant barrier widespread applications. Herein, we address this challenge designing localized conjugated structure comprising cyclic polyacrylonitrile polymer (CPANZ), induced Zn 2+ ‐based Lewis acid (zinc trifluoromethylsulfonate) at temperature 120 °C. The CPANZ layer on anode, enriched with appropriate pyridine nitrogen‐rich groups (conjugated −C=N−), exhibits notable affinity for ample deposition sites. This zincophilic skeleton not only serves protective guide but also functions proton channel blocker, regulating flux mitigate hydrogen evolution. Additionally, strong adhesion strength guarantees its sustained protection during long‐term cycling. As result, modified electrode demonstrates long cycle life high durability in both half‐cell pouch cells. These findings present feasible approach performance aqueous anodes introducing layer.

Language: Английский

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A Polyanionic Hydrogel Electrolyte with Ion Selective Permeability for Building Ultra‐Stable Zn/I₂ Batteries with 100 °C Wide Temperature Range

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 10, 2024

Abstract The practical applications of aqueous Zn/I 2 batteries (AZIBs) operating within a wide temperature range are severely hindered by the uncontrolled shutting polyiodide ions (I 3 − / I 5 ) and rampant side reactions. In this study, tolerant polyanionic hydrogel (borax‐bacteria cellulose p (AMPS‐AM)) with ion selective permeability is designed for inhibiting effect reactions under extreme temperatures from −50 to 50 °C. zincophilic R−SO significantly enhances transport Zn 2+ cations promotes uniform growth metal along (002) plane. Moreover, abundant hydrophilic groups in hydrogels effectively suppress both hydrogen evolution reaction formation by‐products reducing water reactivity. Furthermore, theoretical calculations, visualization experiment situ Raman spectroscopy confirm that group hinders shuttle process /I anions through electrostatic repulsion. Consequently, gel electrolyte facilitates ultra‐stable full cell at low current density C over 100 A pouch negative/positive capacity ratio 3.3 exhibits stable performance 350 cycles an impressive high‐areal 2.03 mA h cm −2 , thereby establishing solid foundation its applications.

Language: Английский

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Unveiling Organic Electrode Materials in Aqueous Zinc-Ion Batteries: From Structural Design to Electrochemical Performance

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: May 14, 2024

Aqueous zinc-ion batteries (AZIBs) are one of the most compelling alternatives lithium-ion due to their inherent safety and economics viability. In response growing demand for green sustainable energy storage solutions, organic electrodes with scalability from inexpensive starting materials potential biodegradation after use have become a prominent choice AZIBs. Despite gratifying progresses molecules electrochemical performance in AZIBs, research is still infancy hampered by certain issues underlying complex electrochemistry. Strategies designing electrode AZIBs high specific capacity long cycling life discussed detail this review. Specifically, we put emphasis on unique electrochemistry different redox-active structures provide in-depth understanding working mechanisms. addition, highlight importance molecular size/dimension regarding profound impact performances. Finally, challenges perspectives developing point view future We hope valuable evaluation our context give inspiration rational design high-performance

Language: Английский

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Refining the inner Helmholtz plane adsorption for achieving a stable solid-electrolyte interphase in reversible aqueous Zn-ion pouch cells

Energy storage materials, Journal Year: 2024, Volume and Issue: 65, P. 103190 - 103190

Published: Jan. 21, 2024

Language: Английский

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