Engineering Strategies for Suppressing the Shuttle Effect in Lithium–Sulfur Batteries

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 10, 2023

Lithium-sulfur (Li-S) batteries are supposed to be one of the most potential next-generation owing their high theoretical capacity and low cost. Nevertheless, shuttle effect firm multi-step two-electron reaction between sulfur lithium in liquid electrolyte makes much smaller than value. Many methods were proposed for inhibiting polysulfide, improving corresponding redox kinetics enhancing integral performance Li-S batteries. Here, we will comprehensively systematically summarize strategies from all components First, electrochemical principles/mechanism origin described detail. Moreover, efficient strategies, including boosting conversion rate sulfur, confining or polysulfides (LPS) within cathode host, LPS shield layer, preventing contacting anode, discussed suppress effect. Then, recent advances inhibition cathode, electrolyte, separator, anode with aforementioned have been summarized direct further design materials Finally, present prospects development directions

Language: Английский

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Chlorine bridge bond-enabled binuclear copper complex for electrocatalyzing lithium–sulfur reactions

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 15, 2024

Abstract Engineering atom-scale sites are crucial to the mitigation of polysulfide shuttle, promotion sulfur redox, and regulation lithium deposition in lithium–sulfur batteries. Herein, a homonuclear copper dual-atom catalyst with proximal distance 3.5 Å is developed for batteries, wherein two adjacent atoms linked by pair symmetrical chlorine bridge bonds. Benefiting from their unique coordination, increased active interface concentration synchronously guide evolutions species. Such delicate design breaks through activity limitation mononuclear metal center represents concept battery realm. Therefore, remarkable areal capacity 7.8 mA h cm −2 achieved under scenario content 60 wt. %, mass loading 7.7 mg electrolyte dosage 4.8 μL −1 .

Language: Английский

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From Liquid to Solid-State Lithium Metal Batteries: Fundamental Issues and Recent Developments

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 20, 2023

The widespread adoption of lithium-ion batteries has been driven by the proliferation portable electronic devices and electric vehicles, which have increasingly stringent energy density requirements. Lithium metal (LMBs), with their ultralow reduction potential high theoretical capacity, are widely regarded as most promising technical pathway for achieving batteries. In this review, we provide a comprehensive overview fundamental issues related to reactivity migrated interfaces in LMBs. Furthermore, propose improved strategies involving interface engineering, 3D current collector design, electrolyte optimization, separator modification, application alloyed anodes, external field regulation address these challenges. utilization solid-state electrolytes can significantly enhance safety LMBs represents only viable approach advancing them. This review also encompasses variation design transition from liquid solid electrolytes. Particularly noteworthy is that introduction SSEs will exacerbate differences electrochemical mechanical properties at interface, leading increased inhomogeneity-a critical factor contributing failure all-solid-state lithium Based on recent research works, perspective highlights status developing high-performance

Language: Английский

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Development of Synergistically Efficient Ni–Co Pair Catalytic Sites for Enhanced Polysulfide Conversion in Lithium–Sulfur Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: March 29, 2024

Abstract The performance of Lithium–sulfur (Li–S) batteries is constrained by the migration lithium polysulfide (LiPS), slow conversion LiPS, and significant reaction barrier encountered during precipitation/dissolution Li 2 S throughout discharge/charge cycle. In this contribution, study presents Ni–Co dual‐atom catalytic sites on hollow nitrogen‐doped carbon (NiCoNC). Theoretical calculations experimental data reveal that catalysts (DACs) accelerate kinetic LiPSs facilitate formation/decomposition discharging charging, which minimizes LiPS migration. Consequently, utilization S/NiCoNC cathodes manifests a substantial initial capacity 1348.5 mAh g −1 at 0.1 C, exceptional cycling stability with an average degradation rate 0.028% per cycle over 900 cycles 0.5 noteworthy capability 626 C. Electrodes higher sulfur loading 4.5 mg cm −2 low electrolyte/sulfur ratio 8 µL exhibit specific capacities up to 1236 as well retention 494.2 after 200 0.2 This effectively showcases potential DACs for cathodes, thereby enhancing overall Li–S batteries.

Language: Английский

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Electronic Spin Alignment within Homologous NiS₂/NiSe₂ Heterostructures to Promote Sulfur Redox Kinetics in Lithium‐Sulfur Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: April 3, 2024

Abstract The catalytic activation of the Li‐S reaction is fundamental to maximize capacity and stability batteries (LSBs). Current research on catalysts mainly focuses optimizing energy levels promote adsorption conversion, while frequently overlooking electronic spin state influence charge transfer orbital interactions. Here, hollow NiS 2 /NiSe heterostructures encapsulated in a nitrogen‐doped carbon matrix (NiS @NC) are synthesized used as additive sulfur cathodes. heterostructure promotes splitting 3d orbital, driving Ni 3+ transformation from low high spin. This configuration raises level activates state. accelerates optimizes energy, lowering barrier polysulfides conversion. Benefiting these characteristics, LSBs based @NC/S cathodes exhibit initial (1458 mAh·g⁻ 1 at 0.1C), excellent rate capability (572 5C), stable cycling with an average decay only 0.025% per cycle 1C during 500 cycles. Even loadings (6.2 mg·cm⁻ ), capacities 1173 (7.27 mAh·cm⁻ ) measured 0.1C, 1058 retained after 300

Language: Английский

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A Review on Engineering Design for Enhancing Interfacial Contact in Solid-State Lithium–Sulfur Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 4, 2024

Abstract The utilization of solid-state electrolytes (SSEs) presents a promising solution to the issues safety concern and shuttle effect in Li–S batteries, which has garnered significant interest recently. However, high interfacial impedances existing between SSEs electrodes (both lithium anodes sulfur cathodes) hinder charge transfer intensify uneven deposition lithium, ultimately result insufficient capacity poor cycling stability. Hence, reduction resistance is paramount importance pursuit efficacious batteries. In this review, we focus on experimental strategies employed enhance contact electrodes, summarize recent progresses their applications Moreover, challenges perspectives rational design practical batteries are outlined as well. We expect that review will provide new insights into further technique development

Language: Английский

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Exploring advances in sulfur composite cathodes for lithium-sulfur batteries: A comprehensive review

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 94, P. 112347 - 112347

Published: June 13, 2024

Language: Английский

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Synergistic Pyridinic N/Pyrrolic N configurations in rGO/CNT composite sulfur hosts for high-performance lithium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150872 - 150872

Published: March 31, 2024

Language: Английский

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CoFe Alloy Coated with Nitrogen-Doped Porous Carbon as both the Electrocatalyst and Lithium-Ion Accelerator for Lithium–Sulfur Batteries

ACS Applied Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Language: Английский

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Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Advanced Science, Journal Year: 2024, Volume and Issue: 11(31)

Published: June 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

Language: Английский

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