Self-assembled multilayers direct a buffer interphase for long-life aqueous zinc-ion batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(8), С. 3381 - 3390

Опубликована: Янв. 1, 2023

A self-assembled multilayer was used to homogenize ion flux and accelerate charge transfer through area-induced deposition effects strong dipole moments. The molecular domains act as a buffer interphase achieve long-term stability.

Язык: Английский

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Comprehensive Review of Electrolyte Modification Strategies for Stabilizing Zn Metal Anodes

Advanced Functional Materials, Год журнала: 2023, Номер 33(51)

Опубликована: Авг. 24, 2023

Abstract In response to the need of sustainable development, there is an increasing demand for electrical energy storage, leading a stimulated pursuit advanced batteries. Aqueous zinc ion batteries (AZIBs) have attracted much attention due their low cost, high safety, and environmental friendliness. Despite great efforts made by researchers in designing developing high‐performance AZIBs, several challenges remain. Particularly Zn anode, growth dendrites occurance various side reactions significantly hinder advancement AZIBs. This review article aims discuss principles electrolyte's structure properties, faced AZIBs anodesm strategies improve battery performance through electrolyte modification systematic manner. conclusion, potential future directions aimed at enhancing stability anodes cathodes are proposed ensure that research geared toward achieving realistic targets commercializing

Язык: Английский

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Reunderstanding aqueous Zn electrochemistry from interfacial specific adsorption of solvation structures

Energy & Environmental Science, Год журнала: 2023, Номер 16(7), С. 2910 - 2923

Опубликована: Янв. 1, 2023

Reunderstanding the faradaic reaction mechanism at electrode/electrolyte interface from specific adsorption of solvation structures towards advanced aqueous Zn–Mn batteries.

Язык: Английский

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A robust gradient solid electrolyte interphase enables fast Zn dissolution and deposition dynamics

Energy & Environmental Science, Год журнала: 2023, Номер 17(2), С. 680 - 694

Опубликована: Дек. 5, 2023

A robust gradient rigid–soft coupling SEI layer on the Zn surface results in ultra-long cycling stability and high zinc utilization rate of AZIBs.

Язык: Английский

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Engineering Fluorine‐rich Double Protective Layer on Zn Anode for Highly Reversible Aqueous Zinc‐ion Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(51)

Опубликована: Ноя. 4, 2023

Abstract The high thermodynamic instability and side reactions of Zn‐metal anode (ZMA), especially at current densities, greatly impede the commercialization aqueous zinc‐ion batteries (AZIBs). Herein, a fluorine‐rich double protective layer strategy is proposed to obtain reversibility AZIBs through introduction versatile tetradecafluorononane‐1,9‐diol (TDFND) additive in electrolyte. TDFND molecule with large adsorption energy (−1.51 eV) preferentially absorbs on Zn surface form Zn(OR) 2 − (R=−CH −(CF ) 7 −CH −) cross‐linking complex network, which balances space electric field controls 2+ ion flux, thus enabling uniform compact deposition (002) crystal planes. Meanwhile, low Lowest unoccupied molecular orbital (LUMO, 0.10 level priorly decomposed regulate interfacial chemistry ZMA by building ZnF ‐rich solid electrode/electrolyte interface (SEI) layer. It found that 14 nm‐thick SEI delivers excellent structural integrity suppress parasitic blocking direct contact active water ZMA. Consequently, electrode exhibits superior cycling life over 430 h 10 mA cm −2 average Coulombic efficiency 99.8 % 5 . Furthermore, 68 mAh pouch cell 80.3 capacity retention for 1000 cycles.

Язык: Английский

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Unraveling the Solvation Structure and Electrolyte Interface through Carbonyl Chemistry for Durable and Dendrite‐Free Zn Anode

Advanced Functional Materials, Год журнала: 2023, Номер 33(46)

Опубликована: Июль 6, 2023

Abstract Aqueous Zn ion batteries are appealing systems owing to their safety, low cost, and environmental friendliness; however, practical applicability is impeded by the growth of dendrites side reactions. Herein, a dual‐functional electrolyte additive, namely acetylacetone (AT) utilized for simultaneous regulation solventized structure anode–electrolyte interface (AEI) achieve durable, dendrite‐free anode. Theoretical calculations experimental characterizations reveal that AT molecule can be adsorbed onto metal surface reconstruct AEI allow primordial desolvation [Zn(H 2 O) 6 ] 2+ at locations away from anode during deposition, which attributed strong polarity carbonyl functional group. In addition, two carbonyls replace H O molecules in primary reduce number active molecules, efficiently suppressing dendrite detrimental As proof concept, Zn//Cu cell constructed ZnSO 4 containing 3 vol.% electrolyte, delivering stable cycling over 1800 cycles while maintaining high Coulombic efficiency 99.74%. This study provides approach inhibiting reactions harnessing chemistry.

Язык: Английский

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Electrolyte Additives for Stable Zn Anodes

Advanced Science, Год журнала: 2023, Номер 11(4)

Опубликована: Ноя. 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.

Язык: Английский

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Adaptive Ionization-Induced Tunable Electric Double Layer for Practical Zn Metal Batteries over Wide pH and Temperature Ranges

ACS Nano, Год журнала: 2023, Номер 17(22), С. 23181 - 23193

Опубликована: Ноя. 13, 2023

The violent side reactions of Zn metal in aqueous electrolyte lead to sharp local-pH fluctuations at the interface, which accelerate anode breakdown; thus, development an optimization strategy accommodate a wide pH range is particularly critical for improving batteries. Herein, we report pH-adaptive electric double layer (EDL) tuned by glycine (Gly) additive with pH-dependent ionization, exhibits excellent capability stabilize anodes wide-pH electrolytes. It discovered that Gly-ionic EDL facilitates directed migration charge carriers both mildly acidic and alkaline electrolytes, leading successful suppression local saturation. worth mentioning regulation effect concentration on inner Helmholtz plane (IHP) structure electrodes clarified depth. revealed Gly additives without dimerization can develop orderly dense vertical adsorption within IHP effectively reduce repulsive force Zn2+ isolate H2O from surface. Consequently, they tunable superior electrochemical performance temperature, involving prodigious cycle reversibility 7000 h symmetric cells ZnSO4-Gly electrolytes extended lifespan 50 times KOH-Gly Moreover, powder||MnO2 pouch cells, high-voltage Zn||Ni0.8Co0.1Mn0.1O2 Zn||NiCo-LDH also deliver cycling reversibility. enables ultrahigh depth discharge (DOD) 93%. This work elucidates design compatible might cause inspiration fields practical multiapplication scenarios anodes.

Язык: Английский

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Maximizing Electrostatic Polarity of Non‐Sacrificial Electrolyte Additives Enables Stable Zinc‐Metal Anodes for Aqueous Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(40)

Опубликована: Авг. 16, 2023

Abstract Although additives are widely used in aqueous electrolytes to inhibit the formation of dendrites and hydrogen evolution reactions on Zn anodes, there is a lack rational design principles systematic mechanistic studies how select suitable additive regulate reversible plating/stripping chemistry. Here, using saccharides as representatives, we reveal that electrostatic polarity non‐sacrificial critical descriptor for their ability stabilize anodes. Non‐sacrificial found continuously modulate solvation structure ions form molecular adsorption layer (MAL) uniform deposition, avoiding thick solid electrolyte interphase due decomposition sacrificial additives. A high renders sucrose best hydrated 2+ desolvation facilitates MAL formation, resulting cycling stability with long‐term cycle life thousands hours. This study provides theoretical guidance screening optimal high‐performance ZIBs.

Язык: Английский

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

Advanced Functional Materials, Год журнала: 2024, Номер 34(30)

Опубликована: Март 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

Язык: Английский

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