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

Chemical Engineering Journal, Год журнала: 2023, Номер 460, С. 141672 - 141672

Опубликована: Фев. 2, 2023

Язык: 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, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 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.

Язык: Английский

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

Materials Today Nano, Год журнала: 2022, Номер 18, С. 100216 - 100216

Опубликована: Май 31, 2022

Язык: 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, Год журнала: 2022, Номер 41(8), С. 2844 - 2852

Опубликована: Июнь 23, 2022

Язык: 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, Год журнала: 2022, Номер 649, С. 129356 - 129356

Опубликована: Июнь 13, 2022

Язык: Английский

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

Chemical Engineering Journal, Год журнала: 2022, Номер 450, С. 137938 - 137938

Опубликована: Июль 6, 2022

Язык: Английский

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

Advanced Science, Год журнала: 2023, Номер 10(9)

Опубликована: Янв. 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.

Язык: Английский

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

Energy & environment materials, Год журнала: 2023, Номер 6(4)

Опубликована: Фев. 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

Язык: 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, Год журнала: 2023, Номер 198, С. 116664 - 116664

Опубликована: Апрель 7, 2023

Язык: Английский

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Revealing the Valence Evolution of Metal Element in Heterostructures for Ultra‐High Power Li‐Ion Capacitors

Advanced Energy Materials, Год журнала: 2023, Номер 13(35)

Опубликована: Июль 27, 2023

Abstract The difficulty in matching cathode and anode kinetics due to slow ion transport anodes constrains the development of lithium‐ion capacitors. Heterogeneous structures with built‐in electric field can promote migration improve reaction kinetics. However, valence evolution metal elements heterostructures during charging/discharging processes is often overlooked. Inspired by theoretical calculations, transition selenides (FeSe 2 /CoSe ) low energy barriers ( E b = 0.35 eV) are successfully engineered fabricated. As expected, designed heterostructure material exhibits outstanding rate performance (512 mAh g −1 at 30 A ultra‐high pseudocapacitance contribution (98.02% 1.0 mV s ), exceeding state‐of‐the‐art values for anodes. Impressively, synchrotron X‐ray absorption spectroscopy (SXAS) ex situ XPS find that states Fe Co heterogeneous structure gradually increase as charging discharging proceeds, inducing a continuous climb reversible specific capacity, while further reducing barrier 0.20 eV). This work reveals iron cobalt providing guidance improving revealing capacity rise mechanism other compounds.

Язык: Английский

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