Radial Pores in Nitrogen/Oxygen Dual‐Doped Carbon Nanospheres Anode Boost High‐Power and Ultrastable Potassium‐Ion Batteries

Advanced Functional Materials, Год журнала: 2021, Номер 31(51)

Опубликована: Сен. 19, 2021

Abstract Constructing electrode materials with fast ions and electrons transport channels is an effective solution to achieve high‐power‐density long‐cycle potassium‐ion batteries (PIBs). Herein, completely opening radial pores in N/O dual‐doped carbon nanospheres (RPCNSs) are constructed as anode for high‐power PIBs. The RPCNS hierarchical structure (micro/meso/macropores channels) dual‐doping permits speedy transportation within the anode, achieving a reversible capacity of 346 mAh g −1 at 50 mA after 360 cycles long‐term cycling life over 2000 without obvious attenuation. situ Raman kinetic analysis (in electrochemical impedance spectroscopy galvanostatic intermittent titration) suggest that exquisitely designed pore heterodoping enable highly reaction de/intercalation kinetics. Moreover, full cells packaged can be fully charged 10 s exhibit highest charge power density 24 866 W kg longest endurance 5000 reported unique structural engineering provides new way storage devices.

Язык: Английский

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2D Material‐Based Heterostructures for Rechargeable Batteries

Advanced Energy Materials, Год журнала: 2021, Номер 12(4)

Опубликована: Июнь 26, 2021

Abstract 2D materials are regarded as promising electrode for rechargeable batteries because of their advantages in providing ample active sites and improving electrochemical reaction kinetics. However, it remains a great challenge to fulfill all requirements high‐performance energy storage devices terms electronic conductivity, the number accessible sites, structural stability, mass production capability. Recent advances constructing material‐based heterostructures offer opportunities utilizing synergistic effects between individual blocks achieve optimized properties enhanced performance. In this perspective, latest summarized, with particular emphasis on multifunctional roles batteries. Synthetic strategies, features mixed dimensionalities, structure engineering distinct functionalities various applications systematically introduced. Finally, challenges perspectives presented highlight future developing practical storage.

Язык: Английский

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Regulating Mass Transport Behavior for High‐Performance Lithium Metal Batteries and Fast‐Charging Lithium‐Ion Batteries

Advanced Energy Materials, Год журнала: 2021, Номер 11(7)

Опубликована: Янв. 5, 2021

Abstract Mass transport plays an important role in the process of metal deposition and charging/discharging kinetics a rechargeable battery. The rational regulation mass behavior to realize optimum ion‐transfer direction rate can enable uniform nucleation reduced concentration polarization, which is favorable for overcoming dendrite growth lithium plating issues batteries fast‐charging batteries, respectively. Here, recent progress achieved through mass‐transport are summarized. An introduction discussion its decisive battery operation provided, followed by exploration correlation between performance. Some future perspectives research directions regulating high‐performance also discussed.

Язык: Английский

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Covalent Coupling-Stabilized Transition-Metal Sulfide/Carbon Nanotube Composites for Lithium/Sodium-Ion Batteries

ACS Nano, Год журнала: 2021, Номер 15(4), С. 6735 - 6746

Опубликована: Март 19, 2021

Transition-metal sulfides (TMSs) powered by conversion and/or alloying reactions are considered to be promising anode materials for advanced lithium-ion batteries (LIBs) and sodium-ion (SIBs). However, the limited electronic conductivity large volume expansion severely hinder their practical application. Herein, we report a covalent coupling strategy TMS-based using amide linkages bind TMSs carbon nanotubes (CNTs). In synthesis, thiourea acts as not only capping agent morphology control but also linking coupling. As proof of concept, covalently coupled ZnS/CNT composite (CC-ZnS/CNT) has been prepared, with ZnS nanoparticles (∼10 nm) tightly anchored on CNT bundles. The compact ZnS-CNT heterojunctions greatly beneficial facilitating electron/ion transfer ensuring structural stability. Due strong interaction between CNTs, presents prominent pseudocapacitive behavior highly reversible electrochemical processes, thus leading superior long-term stability excellent rate capability, delivering capacities 333 mAh g–1 at 2 A over 4000 cycles LIBs 314 5 after 500 SIBs. Consequently, CC-ZnS/CNT exhibits great competence applications in SIBs, is proposed approach designing high-performance materials.

Язык: Английский

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Recent Progress in Emerging Two-Dimensional Transition Metal Carbides

Nano-Micro Letters, Год журнала: 2021, Номер 13(1)

Опубликована: Авг. 20, 2021

Abstract As a new member in two-dimensional materials family, transition metal carbides (TMCs) have many excellent properties, such as chemical stability, in-plane anisotropy, high conductivity and flexibility, remarkable energy conversation efficiency, which predispose them for promising applications transparent electrode, flexible electronics, broadband photodetectors battery electrodes. However, up to now, their device are the early stage, especially because controllable synthesis is still great challenge. This review systematically summarized state-of-the-art research this rapidly developing field with particular focus on structure, property, applicability of TMCs. Finally, current challenges future perspectives outlined application 2D

Язык: Английский

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Regulating Lithium Salt to Inhibit Surface Gelation on an Electrocatalyst for High-Energy-Density Lithium–Sulfur Batteries

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(32), С. 14638 - 14646

Опубликована: Июль 6, 2022

Lithium-sulfur (Li-S) batteries have great potential as high-energy-density energy storage devices. Electrocatalysts are widely adopted to accelerate the cathodic sulfur redox kinetics. The interactions among electrocatalysts, solvents, and lithium salts significantly determine actual performance of working Li-S batteries. Herein, bis(trifluoromethanesulfonyl)imide (LiTFSI), a commonly used salt, is identified aggravate surface gelation on MoS2 electrocatalyst. In detail, trifluoromethanesulfonyl group in LiTFSI interacts with Lewis acidic sites electrocatalyst generate an electron-deficient center. center high acidity triggers cationic polymerization 1,3-dioxolane solvent generates gel layer that reduces electrocatalytic activity. To address above issue, basic salt iodide (LiI) introduced block interaction between inhibit gelation. Consequently, LiI additive realize ultrahigh density 416 W h kg-1 at pouch cell level. This work affords effective boost activity practical deepens fundamental understanding systems.

Язык: Английский

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Interfacial design of silicon/carbon anodes for rechargeable batteries: A review

Journal of Energy Chemistry, Год журнала: 2022, Номер 76, С. 576 - 600

Опубликована: Сен. 16, 2022

Язык: Английский

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Step by Step Induced Growth of Zinc‐Metal Interface on Graphdiyne for Aqueous Zinc‐Ion Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(8)

Опубликована: Янв. 3, 2023

Rechargeable aqueous zinc ion batteries (AZIBs) promise high energy density, low redox potential, cost and safety; however, their cycle performances are seriously insufficient to restrict the progress in this field. We propose a new concept of atomic electrode formed on graphdiyne (GDY). This idea was synthesized by selectively, uniformly, stably anchoring Zn atoms GDY at beginning plating. The induced grow into larger size clusters, which continue nanoflat. Finally, heterojunction interface is without any dendrites side reactions, even current densities. Such stepwise induction growth greatly suppresses formation dendrites, resulting electroplating/stripping reversibility lifespan AZIBs.

Язык: Английский

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Unveiling unique steric effect of threonine additive for highly reversible Zn anode

Nano Energy, Год журнала: 2022, Номер 97, С. 107145 - 107145

Опубликована: Март 15, 2022

Язык: Английский

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Topochemistry‐Driven Synthesis of Transition‐Metal Selenides with Weakened Van Der Waals Force to Enable 3D‐Printed Na‐Ion Hybrid Capacitors

Advanced Functional Materials, Год журнала: 2021, Номер 32(13)

Опубликована: Дек. 9, 2021

Abstract Hybrid capacitors exhibit promise to bridge the gap between rechargeable high‐energy density batteries and high‐power supercapacitors. This separation is due sluggish ion/electron diffusion inferior structural stability of battery‐type materials. Here, a topochemistry‐driven method for constructing expanded 2D rhenium selenide intercalated by nitrogen‐doped carbon hybrid (E‐ReSe 2 @INC) with strong‐coupled interface weak van der Waals forces, proposed. X‐ray absorption spectroscopy analysis dynamically tracks transformation from ReO into ReC bonds. The bridging bonds act as electron transport channels enable improved conductivity accelerated reaction kinetics. interlayer‐spacing ReSe layer INC facilitates ion ensures stability. As expected, E‐ReSe @INC achieves an rate capability (252.5 mAh g −1 at 20 A ) long‐term cyclability (89.6% over 3500 cycles). Moreover, theoretical simulations reveal favorable Na + storage kinetics can be ascribed its low bonding energy −0.06 eV barrier 0.08 sodium ions. Additionally, it demonstrated that 3D printed sodium‐ion deliver high energies/power densities 81.4 Wh kg /0.32 mWh cm −2 9992.1 W /38.76 mW , well applicability in wide temperature range.

Язык: Английский

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