Biowaste ligninsulfonate functionalized cathode of lithium-sulfur battery for immobilization and catalyzation of polysulfides

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 305, P. 141279 - 141279

Published: Feb. 18, 2025

Language: Английский

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Dual‐Aspect Control of Lithium Nucleation and Growth with Hydroxyapatite and Liquid Crystal Polymers for High‐Performance Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Lithium (Li) metal is a promising anode material for next‐generation high‐energy‐density batteries. However, safety concerns and the limited lifespan due to Li dendrite formation hinder its practical application. The complex process involves nonuniform nucleation radial growth, requiring holistic strategy simultaneously regulate both processes. In this work, dual‐aspect control developed by designing protective layer composed of hydroxyapatite (HA) liquid crystal polymer (LCP). Electrochemical, microstructural, computational analyses revealed that HA provides homogenous 0 adsorption sites, enhancing kinetics uniformity. Meanwhile, LCP self‐assembles into cation‐selective channels, promoting Li‐ion diffusion regulating growth direction. This significantly improved plating mitigated formation. Benefiting from strategy, symmetric cell achieved critical current density 5 mA cm −2 maintained 500 h at 3 . Furthermore, in Li–sulfur batteries, exhibited exceptional high‐rate cycling performance (>10 ) with an average capacity decay rate only 0.056% over 1000 cycles. These results highlight effectiveness suppressing dendrites improving stability.

Language: Английский

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Conformational entropy modulation of the work function for the construction of efficient ohmic contacts to accelerate the catalytic conversion of lithium polysulfide

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161666 - 161666

Published: March 1, 2025

Language: Английский

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Coupling Ultrafine Transition Metal and Rare Earth Oxide Nanocrystals toward Highly Active and Stable Catalysts for Lithium–Sulfur Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Electrocatalysts are extremely important for accelerating the redox reaction kinetics in lithium-sulfur (Li-S) batteries. As two kinds of competitive electrocatalysts, however, transition metals (TMs) usually react with sulfur species resulting passivated surfaces, while stable rare earth oxides (REOs) exhibit low catalytic activity. Therefore, developing promising catalysts long-term activity and stability is a crucial task. Herein, TMs-REOs heterojunction catalyst consisting N-doped carbon shell containing embedded ultrafine Gd2O3 Co nanocrystals (named as Gd2O3/Co@NC) elaborately designed fabricated. Experimental theoretical results reveal that strong coupling between large number heterojunctions endows moderate adsorption satisfactory durability. Consequently, cells assembled Gd2O3/Co@NC modified separator high rate capacity (628.0 mAh g-1 at 4C), cycling (504.2 after 500 cycles 2C), utilization (4.8 cm-2 under loading 5.1 mg cm-2). This study highlights invalidation mechanism TMs Li-S batteries will inspire design advanced through REOs.

Language: Английский

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Sodium‐Ion Pump Enhanced Composite Sodium Anode Toward Fast‐Charging and Practical N/P Ratio Solid‐State Sodium Metal Batteries

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Abstract Solid‐state sodium metal batteries (SSSMBs) employing NASICON‐type solid‐state electrolytes and anodes promise enhanced safety high‐energy density, yet the poor anodic interface compatibility induced growth of Na dendrites excessive consumption still hinder their application. In this work, a 3D porous carbon‐supported ultrathin anode with superionic conductivity high diffusivity is designed on surface NASICON electrolytes, which serve as sodium‐ion pump to improve sodium‐ion‐transfer kinetics. The fast ion/electron transfer within composite effectively solved problem rapid + local charge accumulation at interface, thereby achieving dendrite‐free deposition. A critical current density 3.5 mA cm −2 long cycling life 6000 h 0.2 are achieved for symmetrical cells. Coupled 3 V 2 (PO 4 ) cathode, full cells exhibit high‐capacity retention 90.2% after 5100 cycles 10 C. Most importantly, SSSMBs using limited paired 17.3 mg cathode (1.05 negative/positive capacity ratio) deliver an outstanding 97% 100 cycles. This work demonstrates promising toward development practical sustainable high‐performance SSSMBs.

Language: Английский

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Synergistic coordination effect of Co@N active sites and multilevel porous carbon confinement engineering for boosting catalytic conversion kinetics of lithium polysulfides in Li-S batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163176 - 163176

Published: April 1, 2025

Language: Английский

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Fine‐Grain Strengthened Vanadium‐Based Electrocatalysts via Recrystallization Maneuver for Lithium‐Sulfur Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract The rational design of abundant and efficient active sites for lithium‐sulfur electrocatalysis remains a long‐standing challenge, wherein the optimization catalyst activity by manipulating their sizes has stimulated extensive exploration. Herein, fine‐grain strengthening strategy is proposed vanadium‐nitrogen‐carbon (VNC) comprising vanadium (V)‐based units, throughout modulating size surface energy via salt‐template recrystallization. recrystallization frequency dictated to precisely tune effect. Through rigorous procedure 5‐time recrystallization, V‐based units realize reduction from 209 99 Å, increase 0.16 0.32 eV Å −2 , along with specific area adjustment 41.5 206.3 m 2 g −1 . Accordingly, effect effectively activates in i) enhancing sulfur species adsorption propelling Li S nucleation/decomposition reaction kinetics; ii) guiding high‐flux uniform lithium‐ions thus promoting lithium plating/stripping behaviors. Consequently, battery demonstrates an initial discharge capacity 1236.4 mA h at 0.2 C. Even after 600 cycles 2.0 C, cycle‐to‐cycle attenuation merely 0.048%. Furthermore, pouch cell strengthened VNC can proceed stable cycling operation 1.0 ensuring reliable consistent power supply electronic gadgets.

Language: Английский

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Towards improved P2-type Na0.67Ni0.5Mn0.5O2 with fast Na ion diffusion via a metal organic framework coating for sodium ion batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 109, P. 115151 - 115151

Published: Dec. 29, 2024

Language: Английский

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