Understanding the Catalytic Kinetics of Polysulfide Redox Reactions on Transition Metal Compounds in Li–S Batteries

ACS Nano, Год журнала: 2022, Номер 16(10), С. 15734 - 15759

Опубликована: Окт. 12, 2022

Because of their high energy density, low cost, and environmental friendliness, lithium–sulfur (Li–S) batteries are one the potential candidates for next-generation energy-storage devices. However, they have been troubled by sluggish reaction kinetics insoluble Li2S product capacity degradation because severe shuttle effect polysulfides. These problems overcome introducing transition metal compounds (TMCs) as catalysts into interlayer modified separator or sulfur host. This review first introduces mechanism redox reactions. The methods studying TMC in Li–S provided. Then, recent advances TMCs (such oxides, sulfides, selenides, nitrides, phosphides, carbides, borides, heterostructures) some helpful design modulation strategies highlighted summarized. At last, future opportunities toward presented.

Язык: Английский

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Sulfur Reduction Reaction in Lithium–Sulfur Batteries: Mechanisms, Catalysts, and Characterization

Advanced Energy Materials, Год журнала: 2022, Номер 12(44)

Опубликована: Сен. 18, 2022

Abstract Lithium–sulfur batteries are one of the most promising alternatives for advanced battery systems due to merits extraordinary theoretical specific energy density, abundant resources, environmental friendliness, and high safety. However, sluggish sulfur reduction reaction (SRR) kinetics results in poor utilization, which seriously hampers electrochemical performance Li–S batteries. It is critical reveal underlying mechanisms accelerate SRR kinetics. Herein, issues reviewed. The conversion pathways initially introduced give an overview SRR. Subsequently, recent advances catalyst materials that can summarized detail, including carbon, metal compounds, metals, single atoms. Besides, various characterization approaches discussed, be divided into three categories: measurements, spectroscopic techniques, calculations. Finally, conclusion outlook part gives a summary proposes several key points future investigations on activities. This review provide cutting‐edge insights

Язык: Английский

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Porous and graphitic structure optimization of biomass-based carbon materials from 0D to 3D for supercapacitors: A review

Chemical Engineering Journal, Год журнала: 2023, Номер 460, С. 141607 - 141607

Опубликована: Янв. 30, 2023

Язык: Английский

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Recent Progress for Concurrent Realization of Shuttle‐Inhibition and Dendrite‐Free Lithium–Sulfur Batteries

Advanced Materials, Год журнала: 2023, Номер 35(32)

Опубликована: Март 24, 2023

Lithium-sulfur (Li-S) batteries have become one of the most promising new-generation energy storage systems owing to their ultrahigh density (2600 Wh kg-1 ), cost-effectiveness, and environmental friendliness. Nevertheless, practical applications are seriously impeded by shuttle effect soluble lithium polysulfides (LiPSs), uncontrolled dendrite growth metallic Li, which result in rapid capacity fading battery safety problems. A systematic comprehensive review cooperative combination tackling fundamental problems terms cathode anode synchronously is still lacking. Herein, for first time, strategies inhibiting behavior dendrite-free Li-S simultaneously summarized classified into three parts, including "two-in-one" S-cathode Li-anode host materials toward full cell, "two birds with stone" modified functional separators, tailoring electrolyte stabilizing sulfur electrodes. This also emphasizes chemistry mechanism catalyst principles improving electrochemical performance; advanced characterization technologies monitor real-time LiPS evolution discussed detail. The problems, perspectives, challenges respect issues as well application proposed.

Язык: Английский

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Dynamic Intercalation–Conversion Site Supported Ultrathin 2D Mesoporous SnO₂/SnSe₂ Hybrid as Bifunctional Polysulfide Immobilizer and Lithium Regulator for Lithium–Sulfur Chemistry

ACS Nano, Год журнала: 2022, Номер 16(7), С. 10783 - 10797

Опубликована: Июнь 27, 2022

The practical application of lithium-sulfur batteries is impeded by the polysulfide shuttling and interfacial instability metallic lithium anode. In this work, a twinborn ultrathin two-dimensional graphene-based mesoporous SnO2/SnSe2 hybrid (denoted as G-mSnO2/SnSe2) constructed immobilizer regulator for Li-S chemistry. as-designed G-mSnO2/SnSe2 possesses high conductivity, strong chemical affinity (SnO2), dynamic intercalation-conversion site (LixSnSe2), inhibits shuttle behavior, provides rapid Li-intercalative transport kinetics, accelerates LiPS conversion, decreases decomposition energy barrier Li2S, which evidenced ex situ XAS spectra, in Raman, XRD, DFT calculations. Moreover, with lithiophilic characteristics enables homogeneous Li-ion deposition Li dendrite growth. Therefore, separator achieve favorable electrochemical performance, including sulfur utilization (1544 mAh g-1 at 0.2 C), high-rate capability (794 8 long cycle life (extremely low attenuation rate 0.0144% each 5 C over 2000 cycles). Encouragingly, 1.6 g S/Ah-level pouch cell realizes density up to 359 Wh kg-1 under lean E/S usage 3.0 μL mg-1. This work sheds light on design roadmap tackling S-cathode Li-anode challenges simultaneously toward long-durability

Язык: Английский

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A review on lithium-sulfur batteries: Challenge, development, and perspective

Nano Research, Год журнала: 2023, Номер 16(6), С. 8097 - 8138

Опубликована: Янв. 5, 2023

Язык: Английский

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Growth of uniform CuCo2O4 porous nanosheets and nanowires for high-performance hybrid supercapacitors

Journal of Energy Storage, Год журнала: 2022, Номер 52, С. 105048 - 105048

Опубликована: Июнь 9, 2022

Язык: Английский

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Transition Metal Compounds Family for Li–S Batteries: The DFT‐Guide for Suppressing Polysulfides Shuttle

Advanced Functional Materials, Год журнала: 2023, Номер 33(32)

Опубликована: Апрель 29, 2023

Abstract Lithium–sulfur batteries (LSBs) are considered as one of the best candidates for next generation high‐energy‐density storage devices owing to their superior theoretical energy density, high specific capacity, and sufficient sulfur reservoirs. However, shuttle effect soluble polysulfides sluggish LiPSs redox kinetics restrict further application LSBs. The can be efficiently alleviated conversion accelerated by designing optimal transition metal compounds (TMCs) multifunctional catalyst materials. Herein, recent advances about TMCs in LSBs systematically summarized analyzed. First all, intrinsic structural characteristics relevant on works adsorption energies studies described detail. Second, bonding manners properties analyzed density functional theory (DFT)‐guided calculations, focusing diffusion behavior between LiPSs. Furthermore, mechanism reaction is studied from aspects, thus developing continuous dynamic analysis “adsorption–diffusion–conversion” toward Eventually, this study particularly highlights importance modification engineering provides a forward‐looking overview its prospects introduction previous advanced

Язык: Английский

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Electronic structure adjustment of lithium sulfide by a single-atom copper catalyst toward high-rate lithium-sulfur batteries

Energy storage materials, Год журнала: 2022, Номер 51, С. 890 - 899

Опубликована: Июль 17, 2022

Язык: Английский

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ZnFe₂O₄–Ni₅P₄ Mott–Schottky Heterojunctions to Promote Kinetics for Advanced Li–S Batteries

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(20), С. 23546 - 23557

Опубликована: Май 17, 2022

The practical progress of lithium–sulfur batteries is hindered by the serious shuttle effect and slow oxidation–reduction kinetics polysulfides. Herein, ZnFe2O4–Ni5P4 Mott–Schottky heterojunction material prepared to address these issues. Benefitting from a self-generated built-in electric field, as an efficient bidirectional catalysis regulates charge distribution at interface accelerates electron transfer. Meanwhile, synergy strong adsorption capacity derived metal oxides outstanding catalytic performance that comes phosphides strengthens polysulfides, reduces energy barrier during reaction, conversion between sulfur species, further reaction kinetics. Hence, cell with ZnFe2O4–Ni5P4/S harvests high discharge 1132.4 mAh g–1 0.5C displays Coulombic efficiency 99.3% after 700 cycles. battery still maintains 610.1 84.4% retention 150 cycles 0.1C under loading 3.2 mg cm–2. This work provides favorable reference advanced guidance for developing heterojunctions in batteries.

Язык: Английский

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