Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 351, P. 124012 - 124012
Published: April 24, 2024
Language: Английский
ACS Nano, Journal Year: 2023, Volume and Issue: 17(2), P. 1653 - 1662
Published: Jan. 6, 2023
Lithium–sulfur (Li–S) batteries exhibit unparalleled theoretical capacity and energy density than conventional lithium ion batteries, but they are hindered by the dissatisfactory "shuttle effect" sluggish conversion kinetics owing to low transport kinetics, resulting in rapid fading. Herein, a catalytic two-dimensional heterostructure composite is prepared evenly grafting mesoporous carbon on MXene nanosheet (denoted as OMC-g-MXene), serving interfacial kinetic accelerators Li–S batteries. In this design, grafted can not only prevent stack of nanosheets with enhanced mechanical property also offer facilitated pump for accelerating diffusion. Meanwhile, exposed defect-rich OMC-g-MXene inhibits polysulfide shuttling chemical interactions between polysulfides thus simultaneously enhances electrochemical efficiency, fully investigated situ/ex situ characterizations. Consequently, cells pumps achieve high cycling (966 mAh g–1 at 0.2 C after 200 cycles), superior rate performance (537 5 C), an ultralow decaying 0.047% per cycle 800 cycles 1 C. Even employed sulfur loading 7.08 mg cm–2 under lean electrolyte, ultrahigh areal 4.5 acquired, demonstrating future practical application.
Language: Английский
Citations
162
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(36)
Published: May 19, 2023
Abstract Lithium–sulfur (Li–S) batteries are famous for their high energy density and low cost, but prevented by sluggish redox kinetics of sulfur species due to depressive Li ion diffusion kinetics, especially under low‐temperature environment. Herein, a combined strategy electrocatalysis pore sieving effect is put forward dissociate the + solvation structure stimulate free diffusion, further improving reaction kinetics. As protocol, an electrocatalytic porous diffusion‐boosted nitrogen‐doped carbon‐grafted‐CoP nanosheet designed via forming NCoP active release more react with species, as fully investigated electrochemical tests, theoretical simulations in situ/ex situ characterizations. result, cells booster achieve desirable lifespan 800 cycles at 2 C excellent rate capability (775 mAh g −1 3 C). Impressively, condition mass loading or environment, cell 5.7 mg cm −2 stabilizes areal capacity 3.2 charming 647 obtained 0 °C after 80 cycles, demonstrating promising route providing ions toward practical high‐energy Li–S batteries.
Language: Английский
Citations
57
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(39)
Published: June 21, 2023
Abstract The lithium‐metal anode is a promising candidate for realizing high‐energy‐density batteries owing to its high capacity and low potential. However, several rate‐limiting kinetic obstacles, such as the desolvation of Li + solvation structure liberate , 0 nucleation, atom diffusion, cause heterogeneous spatial Li‐ion distribution fractal plating morphology with dendrite formation, leading Coulombic efficiency depressive electrochemical stability. Herein, differing from pore sieving effect or electrolyte engineering, atomic iron anchors cation vacancy‐rich Co 1− x S embedded in 3D porous carbon (SAFe/CVRCS@3DPC) proposed demonstrated catalytic promoters. Numerous free ions are electrocatalytically dissociated complex uniform lateral diffusion by reducing barriers via SAFe/CVRCS@3DPC, smooth dendrite‐free morphologies, comprehensively understood combined situ/ex situ characterizations. Encouraged SAFe/CVRCS@3DPC promotor, modified Li‐metal anodes achieve long lifespan (1600 h) without any formation. Paired LiFePO 4 cathode, full cell (10.7 mg cm −2 ) stabilizes retention 90.3% after 300 cycles at 0.5 C, signifying feasibility using interfacial catalysts modulating behaviors toward practical applications.
Language: Английский
Citations
57
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(8)
Published: Dec. 28, 2023
Abstract Low‐temperature vanadium‐based zinc ion batteries (LT‐VZIBs) have attracted much attention in recent years due to their excellent theoretical specific capacities, low cost, and electrochemical structural stability. However, working temperature surrounding often results retarded transport not only the frozen aqueous electrolyte, but also at/across cathode/electrolyte interface inside cathode interior, significantly limiting performance of LT‐VZIBs for practical applications. In this review, a variety strategies solve these issues, mainly including interface/bulk structure engineering electrolyte optimizations, are categorially discussed systematically summarized from design principles in‐depth characterizations mechanisms. end, several issues about future research directions advancements characterization tools prospected, aiming facilitate scientific commercial development LT‐VZIBs.
Language: Английский
Citations
56
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(17)
Published: Feb. 2, 2023
Non-flammable ionic liquid electrolytes (ILEs) are well-known candidates for safer and long-lifespan lithium metal batteries (LMBs). However, the high viscosity insufficient Li+ transport limit their practical application. Recently, non-solvating low-viscosity co-solvents diluting ILEs without affecting local solvation structure employed to solve these problems. The diluted electrolytes, i.e., locally concentrated (LCILEs), exhibiting lower viscosity, faster transport, enhanced compatibility toward anodes, feasible options next-generation high-energy-density LMBs. Herein, progress of recently developed LCILEs summarised, including physicochemical properties, solution structures, applications in LMBs with a variety high-energy cathode materials. Lastly, perspective on future research directions further understanding achieve improved cell performances is outlined.
Language: Английский
Citations
52
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(12)
Published: Feb. 2, 2023
Abstract Metallic lithium is a fascinating anode for the next‐generation energy‐dense rechargeable batteries owing to highest theoretical specific capacity and lowest electrochemical potential. Nevertheless, sluggish desolvation kinetics notorious dendritic growth hinder its performance safe operation. Herein, an interlamellar Li + conductor of Ag‐montmorillonite (AMMT) proposed as interfacial ion‐transport‐rectifying pump induce rapid reversible plating/stripping metal. Joint experimental computational analyses reveal that AMMT with negative charge layers inherent channels can lower energy boost transport. The resultant endowed low nucleation barrier (22.2 mV) dendrite‐free features, leading high density (8 mA cm ‐2 ) long lifespan (2500 h). Moreover, corresponding Li||LiFePO 4 achieve steady circulation (500 cycles@82%, 1 C) N/P ratio. This strategy offers fresh insight into constructing robust multifunctional electrolyte/Li interface metal batteries.
Language: Английский
Citations
52
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(47)
Published: Sept. 6, 2023
High interconversion energy barriers, depressive reaction kinetics of sulfur species, and sluggish Li+ transport inhibit the wide development high-energy-density lithium (Li-S) batteries. Herein, differing from random mixture selected catalysts, composite catalyst with outer delocalized isoelectronic heterostructure (DIHC) is proposed optimized, enhancing catalytic efficiency for decreasing related barriers. As a proof-of-content, FeCoOx Sy composites different degrees sulfurization are fabricated by regulating atoms ratio between O S. The relationship principal mechanism in DIHCs deeply understood electrochemical experiments to situ/operando spectral spectroscopies i.e., Raman, XRD UV/Vis. Consequently, polysulfide conversion Li2 S precipitation/dissolution strongly demonstrate volcano-like various DIHCs. Furthermore, -decorated cell delivers high performance (1413 mAh g-1 at 0.1 A ). Under low electrolyte/sulfur ratio, loading stabilizes areal capacity 6.67 cm-2 0.2 . Impressively, even resting about 17 days possible shuttling, high-mass-loading same capacity, showing practical application improving reaching performance.
Language: Английский
Citations
50
eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100281 - 100281
Published: May 1, 2024
The growth of dendrites in Li/Na metal batteries is a multifaceted process that controlled by several factors such as electric field, ion transportation, temperature, and pressure. Rational design battery components has become viable approach to address this challenge. Among the various strategies, heterogeneous structures have been demonstrated be effective mitigating uneven deposition reducing local current density regulating sites. In review, we discuss comprehensively underlying principles influence dendrite growth, well synthesis approaches for structures. Furthermore, provide an overview diverse applications components. Finally, highlight existing challenges future directions use deposition.
Language: Английский
Citations
30
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)
Published: April 15, 2024
High-energy-density lithium metal batteries (LMBs) are limited by reaction or diffusion barriers with dissatisfactory electrochemical kinetics. Typical conversion-type sulfur battery systems exemplify the kinetic challenges. Namely, before diffusing reacting in electrode surface/interior, Li(solvent)
Language: Английский
Citations
29
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(24)
Published: Jan. 23, 2024
Abstract Lithium (Li) metal has emerged as a viable alternative anode material to address the current energy density shortfalls in Li batteries. However, its integration into widespread implementation remains somewhat constrained due substandard reversibility issues and safety concerns arising from erratic deposition. To effectively tackle these obstacles, considerable endeavors have been exerted modulate morphology of Nevertheless, it is exceedingly challenging for nuclei that tend dendritic growth thermodynamically transform dense morphologies during their process. Therefore, crucial understand what influences formation process how improve state nuclei. Herein, nucleation mechanisms involving mass transport across solid electrolyte interface electrode interfacial reactions are elucidated. Inspired by understanding nucleation, corresponding design principles, including enhancing homogenizing transport, stabilizing film, regulating surface interaction/selection, summarized optimizing further inducing dendrite‐free In light competition among perspective on existing challenges opportunities promoting application batteries proposed.
Language: Английский
Citations
26