Revealing the Potential and Challenges of High‐Entropy Layered Cathodes for Sodium‐Based Energy Storage

Advanced Energy Materials, Год журнала: 2024, Номер 14(20)

Опубликована: Март 10, 2024

Abstract Sodium‐ion batteries (SIBs) reflect a strategic move for scalable and sustainable energy storage. The focus on high‐entropy (HE) cathode materials, particularly layered oxides, has ignited scientific interest due to the unique characteristics effects tackle their shortcomings, such as inferior structural stability, sluggish reaction kinetics, severe Jahn‐Teller induced lattice distortion, poor oxygen reversibility at high voltage. This review focuses oxide highlighting fundamentals, design principles, application in cathodes SIBs. It delves into growth mechanism, composition‐properties correlations, functional roles of enhancing performance cathodes. Furthermore, it furnishes comprehensive survey recent advancements persisting challenges within domain well offers insights potential future research directions line with current state knowledge.

Язык: Английский

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Three Birds with One Stone: Multifunctional TiN‐MXene‐Co@CNTs Network as Sulfur/Lithium Host for High‐Areal‐Capacity Lithium‐Sulfur Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(35)

Опубликована: Июнь 13, 2024

Abstract The inevitable shuttling and slow redox kinetics of lithium polysulfides (LiPSs) as well the uncontrolled growth Li dendrites have strongly limited practical applications lithium‐sulfur batteries (LSBs). To address these issues, we innovatively constructed carbon nanotubes (CNTs) encapsulated Co nanoparticles in situ grown on TiN‐MXene nanosheets, denoted TiN‐MXene‐Co@CNTs, which could serve simultaneously both sulfur/Li host to kill “three birds with one stone” (1) efficiently capture soluble LiPSs expedite their conversion, (2) accelerate nucleation/decomposition solid 2 S, (3) induce homogeneous deposition. Benefiting from synergistic effects, TiN‐MXene‐Co@CNTs/S cathode a sulfur loading 2.5 mg cm −2 show high reversible specific capacity 1129.1 mAh g −1 after 100 cycles at 0.1 C, ultralong cycle life over 1000 1.0 C. More importantly, it even achieves areal 6.3 50 under 8.9 low E/S ratio 5.0 μL . Besides, TiN‐MXene‐Co@CNTs deliver stable plating/striping behavior h.

Язык: Английский

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Multi-heterostructured MXene/NiS₂/Co₃S₄ with S-Vacancies to Promote Polysulfide Conversion in Lithium–Sulfur Batteries

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(19), С. 24502 - 24513

Опубликована: Май 6, 2024

The severe shuttle effect of polysulfides (LiPSs) and the slow liquid–solid phase conversion are main obstacles hindering practical application lithium–sulfur (Li–S) batteries. Separator modification with a high-activity catalyst can boost LiPSs suppress their effect. In this work, multi-heterostructured MXene/NiS2/Co3S4 rich S-vacancies was constructed facilely hydrothermal high-temperature annealing strategy for separator modification. MXene sheet not only provides physical barrier but also ensures high conductivity adsorption capacity catalyst; dual active centers NiS2 Co3S4 catalyze conversion. addition, vacancies heterostructures modulate electronic structure catalyst, improve its intrinsic activity, reduce reaction barrier, thus facilitating ion/electron transport inhibiting Benefiting from these advantages, Li–S battery modified exhibits exciting discharge capacities (1495.4 mAh g–1 at 0.1C 549.0 6C) an excellent ultra-long cycle life (average decay rate 0.026% 2000 cycles 2C); sulfur loading 10.0 mg cm–2, operates nearly 80 0.2C, giving retention 75.76%. This work

Язык: Английский

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Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Advanced Science, Год журнала: 2024, Номер 11(31)

Опубликована: Июнь 18, 2024

Abstract Lithium–sulfur (Li–S) batteries have attracted significant attention in the realm of electronic energy storage and conversion owing to their remarkable theoretical density cost‐effectiveness. However, Li–S continue face challenges, primarily severe polysulfides shuttle effect sluggish sulfur redox kinetics, which are inherent obstacles practical application. Metal‐organic frameworks (MOFs), known for porous structure, high adsorption capacity, structural flexibility, easy synthesis, emerged as ideal materials separator modification. Efficient interception/conversion ability rapid lithium‐ion conduction enabled by MOFs modified layers demonstrated batteries. In this perspective, objective is present an overview recent advancements utilizing pristine MOF modification separators The mechanisms behind enhanced electrochemical performance resulting from each design strategy explained. viewpoints crucial challenges requiring resolution also concluded Moreover, some promising concepts based on proposed enhance investigate adsorption/conversion mechanisms. These efforts expected contribute future advancement advanced

Язык: Английский

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Constructing metal telluride-grafted MXene as electron “donor–acceptor” heterostructure for accelerating redox kinetics of high-efficiency Li–S batteries

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(21), С. 12691 - 12701

Опубликована: Янв. 1, 2024

An electron modulation strategy of “donor–acceptor” is constructed by uniformly grafting NiTe 2 onto MXene, serving as a catalyst for shuttling blockers.

Язык: Английский

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A Highly Dispersed Cobalt Electrocatalyst with Electron‐Deficient Centers Induced by Boron toward Enhanced Adsorption and Electrocatalysis for Room‐Temperature Sodium–Sulfur Batteries

Small, Год журнала: 2024, Номер 20(31)

Опубликована: Март 8, 2024

Abstract As vitally prospective candidates for next‐generation energy storage systems, room‐temperature sodium–sulfur (RT‐Na/S) batteries continue to face obstacles in practical implementation due the severe shuttle effect of sodium polysulfides and sluggish S conversion kinetics. Herein, study proposes a novel approach involving design B, N co‐doped carbon nanotube loaded with highly dispersed electron‐deficient cobalt (Co@BNC) as conductive host S, aiming enhance adsorption catalyze redox reactions. Crucially, pivotal roles substrate prompting electrocatalytic activity Co are elucidated. The experiments density functional theory (DFT) calculations both demonstrate that after B doping, stronger chemical toward (NaPSs), lower polarization, faster kinetics, more complete transformation achieved. Therefore, as‐assembled RT‐Na/S S/Co@BNC deliver high reversible capacity 626 mAh g −1 over 100 cycles at 0.1 C excellent durability (416 600 0.5 C). Even 2 C, retention remains 61.8%, exhibiting an outstanding rate performance. This work offers systematic way develop electrocatalyst batteries, which can also be effectively applied other transition metallic electrocatalysts.

Язык: Английский

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In-situ chemical state transition of Ni nano-metal catalytic site promotes the reaction kinetics of lithium-sulfur battery

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 153812 - 153812

Опубликована: Июль 7, 2024

Язык: Английский

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Electrospinning Meets Heterostructures in Lithium‐Sulfur Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Abstract Lithium‐sulfur (Li‐S) batteries are recognized as a most promising energy storage technology for their high theoretical density, abundant sulfur resources, and environmental friendliness. Nonetheless, practical applications of Li‐S currently hindered by obstacles such the shuttle effect lithium polysulfides (LiPSs), sluggish reaction kinetics, formation Li dendrites. Heterostructured electrocatalysts can achieve synergistic adsorption‐catalysis LiPSs regulating component composition to accelerate electrochemical guide uniform deposition Li. Electrospinning has emerged versatile approach precise fabrication heterostructured nanomaterials, advantages including tunable composition, controlled fiber diameter, diverse pore structures, flexible morphological heterogeneous interfacial design. In this contribution, latest research progress on heterostructures constructed electrospinning is reviewed. Initially, definition outlined mechanisms promote kinetics in analyzed. Subsequently, principles influencing factors constructing based discussed. The application cathodes, separators, anodes further comprehensively Finally, issues identified, corresponding effective solutions provided. This review intended inspire design construction efficient batteries.

Язык: Английский

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Hydrangea-like NiCo2O4 enable fast lithium ions transportation for high-performance reduced graphene oxide-based freestanding lithium-sulfur battery cathode

Journal of Power Sources, Год журнала: 2025, Номер 639, С. 236682 - 236682

Опубликована: Март 2, 2025

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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