Enabling fast diffusion/conversion kinetics by thiourea-induced wrinkled N, S co-doped functional MXene for lithium-sulfur battery

Energy storage materials, Год журнала: 2024, Номер 67, С. 103328 - 103328

Опубликована: Март 1, 2024

Язык: Английский

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P-doped spherical hard carbon with high initial coulombic efficiency and enhanced capacity for sodium ion batteries

Chemical Science, Год журнала: 2024, Номер 15(22), С. 8478 - 8487

Опубликована: Янв. 1, 2024

Hard carbon (HC) is one of the most promising anode materials for sodium-ion batteries (SIBs) due to its cost-effectiveness and low-voltage plateau capacity. Heteroatom doping considered as an effective strategy improve sodium storage capacity HC. However, previous heteroatom strategies are performed at a relatively low temperature, which could not be utilized raise Moreover, extra heteroatoms create new defects, leading initial coulombic efficiency (ICE). Herein, we propose repair based on trace amount P achieve high along with ICE. By employing cross-linked interaction between glucose phytic acid in situ doped spherical hard carbon, obtained PHC-0.2 possesses large interlayer space that facilitates Na+ transportation. In addition, suitable some defects layers. When used material SIBs, exhibits enhanced reversible 343 mA h g-1 20 ICE 92%. Full cells consisting Na2Fe0.5Mn0.5[Fe(CN)6] cathode exhibited average potential 3.1 V discharge 255 85%. The full cell displays excellent cycling stability retention 80.3% after 170 cycles. This method simple low-cost, can extended other energy materials.

Язык: Английский

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Electrochemical Behavior of the Biomass Hard Carbon Derived from Waste Corncob as a Sodium-Ion Battery Anode

Energy & Fuels, Год журнала: 2024, Номер 38(8), С. 7389 - 7398

Опубликована: Апрель 3, 2024

Biomass-derived hard carbon exhibits remarkable potential as an anode material for sodium-ion batteries (SIBs) owing to its inexpensive cost, availability of resources, and excellent electrochemical performance. However, the relatively low initial Coulombic efficiency (ICE) significantly confines realistic application materials in SIBs. In this work, corncob-derived (CDHC) were synthesized from biomass waste corncob. It has been found that interlayer spacing is greater than 0.37 nm, which clearly surpasses layer graphite. This larger favorable intercalation deintercalation ability sodium ions during charging discharging processes. When CDHC applied by batteries, it shows storage performance, with a maximum reversible capacity approximately 311 mAh g–1 first close 80%.

Язык: Английский

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Transformative Catalytic Carbon Conversion Enabling Superior Graphitization and Nanopore Engineering in Hard Carbon Anodes for Sodium‐Ion Batteries

Carbon Energy, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

ABSTRACT Hard carbons are promising anode materials for sodium‐ion batteries (SIBs), but they face challenges in balancing rate capability, specific capacity, and initial Coulombic efficiency (ICE). Direct pyrolysis of the precursor often fails to create a suitable structure storage. Molecular‐level control graphitization with open channels Na + ions is crucial high‐performance hard carbon, whereas closed pores play key role improving low‐voltage (< 0.1 V) plateau capacity carbon anodes SIBs. However, creation these presents significant challenges. This work proposes zinc gluconate‐assisted catalytic carbonization strategy regulate numerous nanopores simultaneously. As temperature increases, trace amounts remain as single atoms featuring uniform coordination structure. mitigates risk electrochemically irreversible sites enhances transport rates. The resulting shows an excellent reversible 348.5 mAh g −1 at 30 mA high ICE 92.84%. Furthermore, sodium storage mechanism involving “adsorption–intercalation–pore filling” elucidated, providing insights into pore dynamic pore‐filling process.

Язык: Английский

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Air-Stable Prussian White Cathode Materials for Sodium-Ion Batteries Enabled by ZnO Surface Modification

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(13), С. 15649 - 15656

Опубликована: Март 25, 2024

Iron-based Prussian white (PW) is one of the promising cathodes for sodium-ion batteries, owing to its high capacity and low cost. However, practical application PW hindered by poor air stability. The metal-oxide coating has been proven be an effective way improve stability electrode materials. Whereas, target materials conventionally need dissolved in aqueous solution obtain precursor composites subsequently calcined at a temperature during process, which could destroy phase structure as result sodium leaching into water thermal decomposition temperature. In this work, we propose facile method construct ZnO surface layer on utilizing ethanol solvent mild post-treatment effectively enhances induces formation stable interface PW. PW-5 wt % ZnO-E (exposed 60% humidity after 30 days) cathode demonstrates much higher retention (94.1%) 1 C 200 cycles than that PW-E (54%). This work lays solid foundation further

Язык: Английский

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A Fast‐Charging and Ultra‐Stable Sodium‐Ion Battery Anode Enabled by N‐Doped Bi/BiOCl in a Carbon Framework

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 24, 2024

Abstract Owing to the abundant reserves and low cost, sodium‐ion batteries (SIBs) have garnered unprecedented attention. However, their widespread adoption is hindered by scarcity of alternative anodes with fast‐charging capability high stability. To overcome this challenge, a SIB anode, N‐doped Bi/BiOCl embedded in carbon framework (Bi/BiOCl@NC) fast Na + transport channel ultra‐high structural stability, developed. During cycling ether electrolyte, Bi/BiOCl@NC undergoes remarkable transformation into 3D porous skeleton, which significantly reduces pathway accommodates volume changes. By employing density functional theory calculations simulate storage behavior structure, theoretically characterized barrier (0.056 eV) outstanding electronic conductivity. Such unique characteristics induce anode an capacity 410 mAh·g −1 at 20 A·g exhibit stability over 2300 cycles 10 . This study provides rational scenario for design will enlighten more advanced research promote exploitation SIBs.

Язык: Английский

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Bridging Structure and Performance: Decoding Sodium Storage in Hard Carbon Anodes

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Amorphous carbon, particularly hard carbon (HC), is widely considered as the most promising anode material for sodium-ion batteries (SIBs) due to its high reversible capacity and cost-effectiveness. However, complex poorly defined structural properties of HC present challenges in understanding underlying sodium storage mechanisms. To facilitate rational design high-performance anodes, a comprehensive correlation between microstructure behavior critical. This Review critically examines interplay features capabilities, focusing on two key factors: pore structure surface functional groups. It begins by outlining fundamental mechanisms HC, followed an in-depth discussion how chemistry influence storage. Finally, strategic insights are provided manipulate these factors optimize performance. aims drive development next-generation anodes support commercialization SIBs.

Язык: Английский

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Design and Optimization of Iron‐Based Superionic‐Like Conductor Anode for High‐Performance Lithium/Sodium‐Ion Batteries

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Сен. 11, 2024

Abstract Metal selenides have received extensive research attention as anode materials for batteries due to their high theoretical capacity. However, significant volume expansion and slow ion migration rate result in poor cycling stability suboptimal performance. To address these issues, the present work utilized multivalent iron ions construct fast pathways similar superionic conductors (Fe‐SSC) introduced corresponding selenium vacancies enhance its Based on first‐principles calculations molecular dynamics simulations, it is demonstrated that addition of presence reduced material's function adsorption energy, lowered barriers, enhances Li + Na . In Li‐ion half batteries, this composite material exhibites reversible capacity 1048.3 mAh g −1 at 0.1 A after 100 cycles 483.6 5.0 1000 cycles. Na‐ion 687.7 200 325.9 It proven based Fe‐SSC great applications both batteries.

Язык: Английский

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Recent advances and perspectives of supramolecular host-guest systems for electrochemical energy storage

Materials Today Chemistry, Год журнала: 2024, Номер 40, С. 102259 - 102259

Опубликована: Авг. 20, 2024

Язык: Английский

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A modified PVDF-HFP/PMMA crosslinked co-polymer for high-performance all-solid-state lithium metal batteries

Particuology, Год журнала: 2024, Номер 93, С. 203 - 210

Опубликована: Июль 9, 2024

Язык: Английский

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