Additives for Aqueous Zinc‐Ion Batteries: Recent Progress, Mechanism Analysis, and Future Perspectives

Small, Год журнала: 2024, Номер 20(33)

Опубликована: Апрель 8, 2024

Aqueous zinc-ion batteries (ZIBs) stand out as a promising next-generation electrochemical energy storage technology, offering notable advantages such high specific capacity, enhanced safety, and cost-effectiveness. However, the application of aqueous electrolytes introduces challenges: Zn dendrite formation parasitic reactions at anode, well dissolution, electrostatic interaction, by-product cathode. In addressing these electrode-centric problems, additive engineering has emerged an effective strategy. This review delves into latest advancements in electrolyte additives for ZIBs, emphasizing their role resolving existing issues. Key focus areas include improving morphology reducing side during battery cycling using synergistic effects modulating anode interface regulation, zinc facet control, restructuring hydrogen bonds solvation sheaths. Special attention is given to efficacy amino acids zwitterions due multifunction improve performance concerning cycle stability lifespan. Additionally, recent are studied low-temperature extreme weather applications meticulously. concludes with holistic look future engineering, underscoring its critical advancing ZIB amidst complexities challenges additives.

Язык: Английский

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Molecule Engineering of Sugar Derivatives as Electrolyte Additives for Deep‐Reversible Zn Metal Anode

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(35)

Опубликована: Июнь 6, 2024

Abstract The cycling performance of zinc‐ion batteries is greatly affected by dendrite formation and side reactions on zinc anode, particularly in scenarios involving high depth discharge (DOD) low negative/positive capacity (N/P) ratios full cells. Herein, drawing upon principles host–guest interaction chemistry, we investigate the impact molecular structure electrolyte additives, specifically −COOH −OH groups, negative electrode through design. Our findings reveal that molecules containing these groups exhibit strong adsorption onto anode surfaces chelate with Zn 2+ , forming a H 2 O‐poor inner Helmholtz plane. This effectively suppresses promotes dendrite‐free deposition exposed (002) facets, enhancing stability reversibility an average coulombic efficiency 99.89 % introduction Lactobionic acid (LA) additive. Under harsh conditions 92 DOD, Zn//Zn cells stable at challenging current densities 15 mA ⋅ cm −2 . Even N/P ratio 1.3, Zn//NH 4 V O 10 LA high‐capacity retention 73 after 300 cycles, significantly surpassing blank electrolyte. Moreover, conversion type Zn//Br static battery areal (~5 mAh ), sustains improved 700 cycles.

Язык: Английский

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Comprehensive Insights into Aqueous Potassium‐Ion Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 9, 2024

Abstract Aqueous potassium‐ion batteries (AKIBs) with mild aqueous electrolytes can significantly mitigate the safety and environmental issues raised from traditional nonaqueous batteries, positioning them as promising candidates for grid‐scale applications. Nonetheless, progression of AKIBs is currently impeded by insufficient energy density, largely attributed to limited voltage window electrolytes. This review aims introduce foundational knowledge about illustrates recent advancements in AKIBs, offers valuable perspectives on designing electrode materials optimizing To provide a systematic overview, focus following seven key sections: i) development history, ii) materials, iii) electrolyte design, iv) current collectors, v) interphase chemistry, vi) full cell configurations, vii) future prospects. Finally, constructive insights suggestions are provided higher density.

Язык: Английский

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Collagen‐Mediated Solvent Sheathing and Derived Interfacial Manipulation Toward Ultrahigh‐Rate Zn Anodes

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

Abstract The zinc (Zn) anode in zinc‐ion batteries suffers from potential defects such as wild dendrite growth, severe Zn corrosion, and violent hydrogen evolution reaction, inducing erratic interfacial charge transfer kinetics, which eventually leads to electrochemical failure. Here, collagen, a biomacromolecule, is added achieve the reconstruction of electrolyte hydrogen‐bonding network modification derived interface. Benefiting electronegativity advantage amino groups (‐NH 2 ) (002) crystal plane preferentially exposed solid interface (SEI) rich ZnF 3 N promotes rapid anode. Thence, an impressive cumulative capacity 7,500 mAh cm −2 at 30 mA achieved assembled Zn|VO cell exhibited robust cycle reversibility even when subject maximum current 100 A g −1 ultra‐long life 20,000 cycles 50 , with single‐cycle loss low 0.0021%. Such convenient strategy solvent sheathing regulation manipulation opening up promising universal approach toward long‐life high‐rate anodes.

Язык: Английский

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Anion-promoted CB[6] macromolecule dissolution for stable Zn-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(13), С. 4758 - 4769

Опубликована: Янв. 1, 2024

CB[6] not only forms complexes with SO 4 2− anions to enhance its solubility, but also adsorbs horizontally on the Zn surface form an H 2 O/SO shielding layer and induces epitaxial deposition of 2+ along (002) lattice plane.

Язык: Английский

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