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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Tetraphenylporphyrin‐based Chelating Ligand Additive as a Molecular Sieving Interfacial Barrier toward Durable Aqueous Zinc Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(46)

Published: Sept. 29, 2023

The sustained water consumption and uncontrollable dendrite growth strongly hamper the practical applications of rechargeable zinc (Zn) metal batteries (ZMBs). Herein, for first time, we demonstrate that trace amount chelate ligand additive can serve as a "molecular sieve-like" interfacial barrier achieve highly efficient Zn plating/stripping. As verified by theoretical modeling experimental investigations, benzenesulfonic acid groups on molecular not only facilitates its solubility selective adsorption anode, but also effectively accelerates de-solvation kinetics Zn2+ . Meanwhile, central porphyrin ring expels free molecules from via chemical binding against hydrogen evolution, reversibly releases captured to endow dendrite-free deposition. By virtue this non-consumable additive, high average plating/stripping efficiency 99.7 % over 2100 cycles together with extended lifespan suppressed decomposition in Zn||MnO2 full battery were achieved, thus opening new avenue developing durable ZMBs.

Language: Английский

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Tailoring desolvation strategies for aqueous zinc-ion batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 4819 - 4846

Published: Jan. 1, 2024

This review provides a comprehensive overview detailing the advancements in desolvation strategies pertaining to aqueous zinc-ion batteries (AZIBs) performances, addressing applications and working mechanisms of AZIBs.

Language: Английский

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Electrolyte Additives for Stable Zn Anodes

Advanced Science, Journal Year: 2023, Volume and Issue: 11(4)

Published: Nov. 27, 2023

Abstract Zn‐ion batteries are regarded as the most promising for next‐generation, large‐scale energy storage because of their low cost, high safety, and eco‐friendly nature. The use aqueous electrolytes results in poor reversibility leads to many challenges related Zn anode. Electrolyte additives can effectively address such challenges, including dendrite growth corrosion. This review provides a comprehensive introduction major current strategies used anode protection. In particular, an in‐depth fundamental understanding is provided various functions electrolyte additives, electrostatic shielding, adsorption, situ solid interphase formation, enhancing water stability, surface texture regulation. Potential future research directions also discussed.

Language: Английский

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A review on zinc electrodes in alkaline electrolyte: Current challenges and optimization strategies

Energy storage materials, Journal Year: 2023, Volume and Issue: 61, P. 102903 - 102903

Published: July 28, 2023

Language: Английский

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Fundamental Understanding of Hydrogen Evolution Reaction on Zinc Anode Surface: A First-Principles Study

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

Published: Feb. 6, 2024

Hydrogen evolution reaction (HER) has become a key factor affecting the cycling stability of aqueous Zn-ion batteries, while corresponding fundamental issues involving HER are still unclear. Herein, mechanisms on various crystalline surfaces have been investigated by first-principle calculations based density functional theory. It is found that Volmer step rate-limiting Zn (002) and (100) surfaces, while, rates (101), (102) (103) determined Tafel step. Moreover, correlation between activity generalized coordination number ([Formula: see text]) at revealed. The relatively weaker surface can be attributed to higher [Formula: text] atom. atomically uneven shows significantly than flat as atom lowered. proposed descriptor activity. Tuning would vital strategy inhibit anode presented theoretical studies. Furthermore, this work provides basis for in-depth understanding surface.

Language: Английский

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Recent advances on charge storage mechanisms and optimization strategies of Mn-based cathode in zinc–manganese oxides batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 66, P. 103206 - 103206

Published: Jan. 20, 2024

Language: Английский

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Interfacial Dual‐Modulation via Cationic Electrostatic Shielding and Anionic Preferential Adsorption toward Planar and Reversible Zinc Electrodeposition

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: March 29, 2024

Abstract Rechargeable aqueous zinc‐ion batteries (ZIBs) with low cost and high safety arouse most promises as next‐generation energy storage configurations. Yet the heterogeneous electric field distributions interfacial side reactions are considered stumbling roadblocks toward commercialization of ZIBs. Here, these challenges via cationic electrostatic shielding anionic preferential adsorption by sodium gluconate (SG) additive addressed. The polar functional groups (─COO − ) SG anions preferentially anchor to Zn anode, which can alter 2+ migration pathways restrain reactions. Moreover, per smaller effective reduction potential, separated cations (Na + from serve a dynamic armor provide strong effect for uniform deposition on [002] crystal plane, radically eliminating dendrite growth promoting anti‐corrosion behaviors Zn. Consequently, Zn//Zn symmetric cell modified electrolyte confers lifespan up 600 h at 80% depth discharge. Furthermore, even under record‐low negative/positive ratio 2.11 lean 30 µL mAh −1 , Zn//VOX full remains enhanced capacity retention 84.37% after 800 cycles 1 A g . This work develops an dual‐modulation strategy provides unique insights enlighten practical application

Language: Английский

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A Bifunctional Electrolyte Additive Features Preferential Coordination with Iodine toward Ultralong‐Life Zinc–Iodine Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(21)

Published: Feb. 27, 2024

Abstract Aqueous zinc–iodine (Zn‐I 2 ) battery is one of the most promising candidates for large‐scale energy storage due to its cost‐effectiveness, environmental friendliness, and recyclability. Its practical application hindered by challenges including polyiodide “shuttle effect” in cathode anode corrosion. In this study, a zinc pyrrolidone carboxylate bifunctional additive introduced simultaneously tackle issues Zn anode. It revealed that anions decrease concentration preferential coordination between I based on Lewis acid‐base effect, suppressing shuttle effect therefore improving conversion kinetics iodine redox process. Meanwhile, adsorbed inhibit corrosion promote non‐dendritic plating, contributing impressive Coulombic efficiency long‐term cycling stability. As result, Zn‐I full with realizes high specific capacity 211 mAh g −1 (≈100% utilization rate), an ultralong life >30 000 cycles 87% retention. These findings highlight significant potential as transformative aqueous batteries, marking critical advancement field technologies.

Language: Английский

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Optimal Molecular Configuration of Electrolyte Additives Enabling Stabilization of Zinc Anodes

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 8, 2024

Abstract For the development of electrolyte additives as an effective strategy to improve performance zinc‐ion batteries (ZIBs), most researchers focus on functional groups but overlook crucial molecular configuration. Herein, six stereoisomers 2,3,4,5‐tetrahydroxyvaleraldehyde with identical various spatial arrangements are studied additive in ZIBs. Based experimental analysis and theoretical calculations, adsorption Zn (002) plane is found be important dominant for stereoisomer enhance anode performance. Among these stereoisomers, D‐Arabinose preferential strongest chemisorption effect modifies anode/electrolyte interface effectively, leading highest stability reversibility anode. The adsorbed shows multifunctional effects at interface, which not only regulates 2+ solvation structure reconfigures hydrogen bond framework, also facilitates uniform deposition by promoting 3D diffusion homogenizing electric field. Therefore, ZnSO 4 electrolyte, undesired dendrite growth side reactions including evolution reaction, corrosion, passivation significantly limited during plating/stripping processes. This work proposes a new insight toward optimal configuration designing engineering stable

Language: Английский

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