MOF-derived ultrasmall Ru@RuO2 heterostructures as bifunctional and pH-universal electrocatalysts for 0.79 V asymmetric amphoteric overall water splitting

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 460, P. 141672 - 141672

Published: Feb. 2, 2023

Language: Английский

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3D‐Printed Nanostructured Copper Substrate Boosts the Sodiated Capability and Stability of Antimony Anode for Sodium‐Ion Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)

Published: Jan. 15, 2024

Abstract Sodium‐ion batteries (SIBs) represent a viable substitute to lithium‐ion due their affordability and resource abundance. For SIBs, antimony (Sb) shows potential as anode material but is impeded by the high volumetric variations. Here challenges of Sb sodium storage introducing nanostructured Cu substrate for enhanced adhesion morphology optimization addressed, which realized fused deposition modeling (FDM) printing substrate, subsequent high‐temperature sintering, electrodeposition Sb. In deposited on three dimensional (3D) printed performs improved cycling stability compared with that Sb@Cu commercial foil can be attributed nanostructure 3D‐Cu substrate. Such architecture induces generation pine‐leaf‐like clusters promote kinetics, it aids between cluster preventing detachment restructuring robust porous ligament‐channel framework. The evolution, (de)sodiation mechanism, gas evolution are explored ex situ scanning electron microscope, operando X‐ray diffraction, differential electrochemical mass spectrometry separately. developed Sb@3D‐Cu offers flexible pathway constructing 3D‐printed self‐supported electrodes SIBs.

Language: Английский

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Mo-decorated cobalt phosphide nanoarrays as bifunctional electrocatalysts for efficient overall water/seawater splitting

Materials Today Nano, Journal Year: 2022, Volume and Issue: 18, P. 100216 - 100216

Published: May 31, 2022

Language: Английский

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Silver vanadate (Ag0.33V2O5) nanorods from Ag intercalated vanadium pentoxide for superior cathode of aqueous zinc-ion batteries

Rare Metals, Journal Year: 2022, Volume and Issue: 41(8), P. 2844 - 2852

Published: June 23, 2022

Language: Английский

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Economical preparation of high-performance activated carbon fiber papers as self-supporting supercapacitor electrodes

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 450, P. 137938 - 137938

Published: July 6, 2022

Language: Английский

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From dual-aerogels with semi-interpenetrating polymer network structure to hierarchical porous carbons for advanced supercapacitor electrodes

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2022, Volume and Issue: 649, P. 129356 - 129356

Published: June 13, 2022

Language: Английский

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Quantitative Regulation of Interlayer Space of NH₄V₄O₁₀ for Fast and Durable Zn²⁺ and NH₄⁺ Storage

Advanced Science, Journal Year: 2023, Volume and Issue: 10(9)

Published: Jan. 25, 2023

Layered vanadium-based oxides are the promising cathode materials for aqueous zinc-ion batteries (AZIBs). Herein, an in situ electrochemical strategy that can effectively regulate interlayer distance of layered NH4 V4 O10 quantitatively is proposed and a close relationship between optimal performances with space revealed. Specifically, via increasing cutoff voltage from 1.4, 1.6 to 1.8 V, be well-controlled enlarged 10.21, 11.86, 12.08 Å, respectively, much larger than pristine one (9.5 Å). Among them, being charging V (NH4 -C1.6), demonstrates best Zn2+ storage including high capacity 223 mA h g-1 at 10 A long-term stability retention 97.5% over 1000 cycles. Such superior attributed good balance among active redox sites, charge transfer kinetics, crystal structure stability, enabled by careful control space. Moreover, -C1.6 delivers NH4+ whose reaches 296 0.1 lifespan lasts 3000 cycles 5 . This study provides new insights into understand limitation ion media guides exploration high-performance materials.

Language: Английский

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Low‐Temperature Carbonized Nitrogen‐Doped Hard Carbon Nanofiber Toward High‐Performance Sodium‐Ion Capacitors

Energy & environment materials, Journal Year: 2023, Volume and Issue: 6(4)

Published: Feb. 18, 2023

Carbon nanofiber (CNF) was widely utilized in the field of electrochemical energy storage due to its superiority conductivity and mechanics. However, CNF generally prepared at relatively high temperature. Herein, nitrogen‐doped hard carbon nanofibers (NHCNFs) were by a low‐temperature carbonization treatment assisted with electrospinning technology. Density functional theory analysis elucidates incorporation nitrogen heteroatoms various chemical states into matrix would significantly alter total electronic configurations, leading robust adsorption efficient diffusion Na atoms on electrode interface. The obtained material carbonized 600 °C (NHCNF‐600) presented reversible specific capacity 191.0 mAh g −1 no decay after 200 cycles 1 A . It found that sodium‐intercalated degree had correlation impedance. potential 0.2 V adopted lower constructed sodium‐ion capacitor activated cathode presodiated NHCNF‐600 anode can present an power density 82.1 Wh kg 7.0 kW

Language: Английский

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Effect of precursor selection on the structure and Li-storage properties of wood-based hard carbon thick electrodes

Industrial Crops and Products, Journal Year: 2023, Volume and Issue: 198, P. 116664 - 116664

Published: April 7, 2023

Language: Английский

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Regulating Graphitic Microcrystalline and Single‐Atom Chemistry in Hard Carbon Enables High‐Performance Potassium Storage

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(12)

Published: Dec. 6, 2023

Abstract Hard carbon (HC) has attracted considerable research interest as the most promising anode for potassium‐ion batteries (PIBs) due to its tunable interlayer spacing and abundant voids accommodate K + . However, practical application of hard is severely hampered by low initial Coulombic efficiency (ICE) high plateau potential. Herein, a manganese ion‐catalyzed pyrolysis strategy explored regulate graphitic microcrystalline structure localized electron distribution in that greatly improve storage ICE. Systematic experimental measurements, situ/ex situ observations, dynamic analysis, density functional theory calculations elucidate introduction Mn 2+ ions could catalyze formation short‐ordered nanodomains provide insertions , meanwhile induce through Mn─N 3 ─C coordination enable diffusion transfer kinetics. Consequently, modulated exhibits low‐potential–plateau capacity, excellent rate capability, potassium half‐cell configurations. More importantly, charge mechanism “adsorption–intercalation” proposed based on correlation between structures discharge/charge plateau. This work provides an in‐depth insight into fundamentals microstructure regulation high‐performance PIBs.

Language: Английский

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