Dual design strategy of carbon nanotubes-modified mixed-phase selenide for high-performance Li S batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 100, P. 113648 - 113648

Published: Sept. 6, 2024

Language: Английский

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Selenide in 3D structure of polyhedra branching out nanotubes for collaborative facilitated conversion and capturing of polysulfide in Li–S batteries

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Language: Английский

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Zif-Derived Hierarchical Quaternary Nicosse Materials for Lithium-Sulfur Batteries: Se Doping Enhances Bimetallic Atomic Synergies to Improve Cathode Reaction Kinetics

Published: Jan. 1, 2025

Language: Английский

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Hollow CoNiFe ternary metal selenide electrocatalysts derived from Prussian blue analogues for boosting the oxygen evolution reaction

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Herein, we report a strategy to fabricate hollow ternary metal selenide (CoNiFe–Se) nanocubes derived from Prussian blue analogues (PBAs) by phytic acid etching and low-temperature gas-phase selenization.

Language: Английский

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Oxygen vacancies-enriched CeO2-CoxOy heterostructures facilitate the “trapping-conversion” process of lithium polysulfides for high-performance Li-S batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162145 - 162145

Published: April 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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Zeolitic imidazolate framework-derived hierarchical quaternary nickel cobalt sulfoselenide materials for lithium-sulfur batteries: Se doping enhances bimetallic atomic synergies to improve cathode reaction kinetics

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 694, P. 137681 - 137681

Published: April 23, 2025

Language: Английский

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Preparation of MoSe2 nanosheets/nitrogen-doped carbon nanotubes and their electrochemical energy storage properties

Applied Surface Science, Journal Year: 2024, Volume and Issue: 678, P. 161087 - 161087

Published: Aug. 30, 2024

Language: Английский

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Pre-carbonizing nickel-metal organic frameworks for enabling lithium–sulfur reactions

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(79), P. 11108 - 11111

Published: Jan. 1, 2024

The pre-carbonization treatment on Ni-MOF increases electron conductivity without structural collapse. Therefore, Ni-carbon not only preserves the polysulfide confinement ability of but also propels direct Li 2 S nucleation/decomposition.

Language: Английский

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Synergistic Interaction of Strongly Polar Zinc Selenide and Highly Conductive Carbon Nanoframeworks Accelerates Redox Kinetics of Polysulfides

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 60356 - 60365

Published: Oct. 26, 2024

Lithium–sulfur batteries (LSBs) have become strong competitors in secondary battery systems because of their superior theoretical capacity and energy density. However, due to the serious shuttle effect soluble long-chain lithium polysulfides (LiPSs) slow solid–solid reaction kinetics, LSBs face some specific challenges, such as a short cycle life low rate performance. The introduction selenide/carbon composites derived from zeolite imidazolate frameworks (ZIFs) into separator coatings is direct effective solution aforementioned problems. Here, zinc catalyst material (ZnSe@C) was constructed employed modify commercial polypropylene (PP) separators accelerate conversion intermediates. highly polar ZnSe effectively fixes active on cathode side by transferring electrons between elements with LiPSs improves utilization sulfur. Concurrently, conductive carbon nanoskeleton generated following pyrolysis ZIF-8 ensures rapid transfer charges during catalytic reaction. prepared ZnSe@C has large surface area (250.07 m2 g–1) mesoporous ratio (78.03%), which not only enhances adsorption catalysis but also promotes penetration electrolyte transport Li+. Based this, ZnSe@C/PP cells exhibit average decay 0.051% per after 500 cycles at 1 C.

Language: Английский

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