Atomically Dispersed Zincophilic Sites in N,P-Codoped Carbon Macroporous Fibers Enable Efficient Zn Metal Anodes

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(22), С. 12333 - 12341

Опубликована: Май 26, 2023

Zn dendrite growth and undesired parasitic reactions severely restrict the practical use of deep-cycling metal anodes (ZMAs). Herein, we demonstrate an elaborate design atomically dispersed Cu sites anchored on N,P-codoped carbon macroporous fibers (denoted as Cu/Zn-N/P-CMFs) a three-dimensional (3D) versatile host for efficient ZMAs in mildly acidic electrolyte. The 3D frameworks can alleviate structural stress suppress by spatially homogenizing Zn2+ flux. Moreover, well-dispersed atoms N P maximize utilization abundant active nucleation plating. As expected, Cu/Zn-N/P-CMFs presents low overpotential, high reversibility, dendrite-free deposition. Cu/Zn-N/P-CMFs-Zn electrode exhibits stable plating/stripping with polarization 630 h at 2 mA cm-2 mAh cm-2. When coupled MnO2 cathode, fabricated full cell also shows impressive cycling performance even when tested under harsh conditions.

Язык: Английский

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Recent advances in electrode engineering strategies for aqueous Zn-based batteries

Chem, Год журнала: 2023, Номер 9(5), С. 1118 - 1146

Опубликована: Апрель 25, 2023

Язык: Английский

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Pre‐intercalation of Ammonium Ions in Layered δ‐MnO₂ Nanosheets for High‐Performance Aqueous Zinc‐Ion Batteries

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

Опубликована: Ноя. 6, 2023

Abstract Layered manganese dioxide is a promising cathode candidate for aqueous Zn‐ion batteries. However, the narrow interlayer spacing, inferior intrinsic electronic conductivity and poor structural stability still limit its practical application. Herein, we report two‐step strategy to incorporate ammonium ions into (named as AMO) nanosheets boosted Zn ion storage. K + ‐intercalated δ ‐MnO 2 (KMO) grown on carbon cloth are chosen self‐involved precursor. Of note, could replace via facile hydrothermal reaction enlarge lattice space form hydrogen‐bond networks. Compared with KMO, transfer kinetics of layered AMO enhanced. As expected, obtained exhibits remarkable electrochemical properties in terms high reversible capacity, decent rate performance superior cycling over 10000 cycles.

Язык: Английский

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Carbon Nitride Pillared Vanadate Via Chemical Pre‐Intercalation Towards High‐Performance Aqueous Zinc‐Ion Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(26)

Опубликована: Май 3, 2023

Vanadium based compounds are promising cathode materials for aqueous zinc (Zn)-ion batteries (AZIBs) due to their high specific capacity. However, the narrow interlayer spacing, low intrinsic conductivity and vanadium dissolution still restrict further application. Herein, we present an oxygen-deficient vanadate pillared by carbon nitride (C3 N4 ) as AZIBs through a facile self-engaged hydrothermal strategy. Of note, C3 nanosheets can act both nitrogen source pre-intercalation species transform orthorhombic V2 O5 into layered NH4 V4 O10 with expanded spacing. Owing structure abundant oxygen vacancies, Zn2+ ion (de)intercalation kinetics ionic in promoted. As result, delivers exceptional Zn-ion storage ability capacity of about 370 mAh g-1 at 0.5 A , high-rate capability 194.7 20 stable cycling performance 10 000 cycles.

Язык: Английский

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Epitaxial Core–Shell MnFe Prussian Blue Cathode for Highly Stable Aqueous Zinc Batteries

ACS Energy Letters, Год журнала: 2023, Номер 8(10), С. 4085 - 4095

Опубликована: Сен. 8, 2023

The high-safety aqueous zinc battery is regarded as a desirable alternative to lithium-ion batteries; however, it still lacks sufficient cycling capability. primary impediment structural distortion of cathode materials in electrolytes. Here we propose an epitaxial Fe- on Mn-hexacyanoferrate construct core–shell double-atom-redox Prussian blue analogue (PBA). shell Fe-PBA shows small volumetric change, inclined toward surface amorphization upon ion-insertion, leading the low-strain core–double structure. situ reorganization effectively suppresses Jahn–Teller and prevents Mn dissolution into electrolyte core Mn-PBA. Consequently, design that facilitates high-voltage full cells (over 1.8 V vs Zn2+/Zn) enables high discharge capacity 166 117 mAh g–1 retention 72.4% 83.9% over 400 4800 cycles at 0.1 2 A g–1, respectively. pouch cell operates successfully under harsh conditions from −30 60 °C.

Язык: Английский

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

Advanced Energy Materials, Год журнала: 2023, Номер 14(8)

Опубликована: Дек. 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.

Язык: Английский

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Defect-Free Prussian Blue Analogue as Zero-Strain Cathode Material for High-Energy-Density Potassium-Ion Batteries

ACS Nano, Год журнала: 2024, Номер 18(9), С. 7287 - 7297

Опубликована: Фев. 19, 2024

Prussian blue analogues (PBAs) have been widely studied as cathodes for potassium-ion batteries (PIBs) due to their three-dimensional framework structure and easily adjustable composition. However, the phase transition behavior [Fe(CN)6]4– anionic defects severely deteriorate electrochemical performances. Herein, we propose a defect-free potassium iron manganese hexacyanoferrate (K1.47Fe0.5Mn0.5[Fe(CN)6]·1.26H2O, KFMHCF-1/2) cathode material PIBs. The Fe–Mn binary synergistic effects can inhibit cell volume change octahedral slip during K-ion insertion/extraction process, so that transformation (monoclinic ↔ cubic) is effectively inhibited, achieving zero-strain solid solution mechanism employing Fe Mn dual active-sites. Thus, KFMHCF-1/2 contributes highest initial capacity of 155.3 mAh·g–1 with an energy density 599.5 Wh·kg–1 at 10 mA·g–1 among reported PBA cathodes, superior rate capability, cyclic stability over 450 cycles. assembled full battery using K deposited on graphite (K@G) anode also delivers high reversible specific 131.1 20 ultralong lifespans 1000 cycles 50 lowest decay 0.044% per cycle. This work will promote rapid application high-energy-density

Язык: Английский

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Sustainable regeneration of spent cathodes for lithium-ion and post-lithium-ion batteries

Nature Sustainability, Год журнала: 2024, Номер 7(6), С. 776 - 785

Опубликована: Май 14, 2024

Язык: Английский

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Facilitating the Electrochemical Oxidation of ZnS through Iodide Catalysis for Aqueous Zinc‐Sulfur Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(9)

Опубликована: Янв. 10, 2024

Aqueous zinc-sulfur (Zn-S) batteries show great potential for unlocking high energy and safety aqueous batteries. Yet, the sluggish kinetic poor redox reversibility of sulfur conversion reaction in solution challenge development Zn-S Here, we fabricate a high-performance battery using highly water-soluble ZnI

Язык: Английский

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Crystallographic types depended energy storage mechanism for zinc storage

Nano Energy, Год журнала: 2024, Номер 125, С. 109524 - 109524

Опубликована: Март 26, 2024

Язык: Английский

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