Chemical Communications, Journal Year: 2024, Volume and Issue: 60(75), P. 10245 - 10264
Published: Jan. 1, 2024
As industries and consumption patterns evolve, new electrical appliances are increasingly playing critical roles in national production, defense, cognitive exploration. However, the slow development of energy storage devices with ultra-high density (beyond 500 W h kg
Language: Английский
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(21)
Published: April 14, 2023
Abstract The key means to improve the performance of lithium–sulfur batteries (LSBs) is reduce internal resistance by building an electronic/ionic pathway and accelerate conversion kinetics lithium polysulfides (LiPSs) through modulation interface functions. Herein, inspired a grass root system, flexible hierarchical CNF‐CNT (carbon nanofiber‐carbon nanotube) membrane decorated with Co‐doped NiS 2 nanoparticles (Co‐NiS @CNF‐CNT) designed as interlayer for LSBs, in which situ grown CNTs (root hairs) are wound on CNF (roots). Density functional theory (DFT) calculations show that Co doping introduces electron‐deficient regions at sites , thus improving chemical adsorption catalytic activities toward LiPSs. cell pairs Co‐NiS @CNF‐CNT exhibit high rate 951.4 mAh g −1 3 C, reversible capacity 944.1 after 500 cycles 0.2 prolonged cycle life 3000 5 C. More importantly, areal 7.96 cm −2 achieved sulfur loading 9.6 mg . This work provides strategy enhancing electrochemical LSBs combining 3D conductive skeletons catalysis materials.
Language: Английский
Citations
100
National Science Review, Journal Year: 2023, Volume and Issue: 10(7)
Published: April 25, 2023
The relative natural abundance of potassium and potentially high energy density has established potassium-ion batteries as a promising technology for future large-scale global storage. However, the anodes' low capacity discharge platform lead to density, which impedes their rapid development. Herein, we present possible co-activation mechanism between bismuth (Bi) tin (Sn) that enhances K-ion storage in battery anodes. co-activated Bi-Sn anode delivered 634 mAh g
Language: Английский
Citations
79
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
46
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)
Published: July 27, 2023
Abstract The localized reaction heterogeneity of the sulfur cathode and uneven Li deposition on anode are intractable issues for lithium–sulfur (Li–S) batteries under practical operation. Despite impressive progress in separately optimizing or anode, a comprehensive understanding highly coupled relationship between is still lacking. In this work, inspired by Butler–Volmer equation, binary descriptor ( I BD ) assisting rational structural design simultaneously considering mass‐transport index mass charge‐transfer charge identified, subsequently morphological evolution established. Guided , scalable electrode providing interpenetrated flow channels efficient mass/charge transfer, full utilization active sulfur, mechanically elastic support aggressive electrochemical reactions conditions reported. These characteristics induce homogenous distribution local current densities reduced both sides anode. Impressive energy density 318 Wh kg −1 473 L an Ah‐level pouch cell can be achieved concept. This work offers promising paradigm unlocking interaction designing high‐energy Li–S batteries.
Language: Английский
Citations
44
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 664, P. 617 - 625
Published: March 11, 2024
Language: Английский
Citations
34
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: Jan. 29, 2024
Abstract Spin-engineering with electrocatalysts have been exploited to suppress the “shuttle effect” in Li–S batteries. Spin selection, spin-dependent electron mobility and spin potentials activation barriers can be optimized as quantum exchange interactions leading a significant reduction of electronic repulsions orbitals catalysts. Herein, we anchor MgPc molecules on fluorinated carbon nanotubes (MgPc@FCNT), which exhibits single active Mg sites axial displacement. According density functional theory calculations, polarization MgPc@FCNT not only increases adsorption energy toward LiPSs intermediates but also facilitates tunneling process As result, provides an initial capacity 6.1 mAh cm −2 even when high sulfur loading is 4.5 mg , still maintains 5.1 after 100 cycles. This work new perspective extend main group single-atom catalysts enabling high-performance
Language: Английский
Citations
23
Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 94, P. 112347 - 112347
Published: June 13, 2024
Language: Английский
Citations
21
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 10, 2025
Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.
Language: Английский
Citations
9
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(28)
Published: April 8, 2023
Metal-free carbon-based catalysts are crucial for the electrocatalytic chlorine evolution reaction (CER) to reduce usage of noble metals and industrial cost. However, corresponding catalytic activity high overpotential low durability hinders their wide application. Here, a hollow porous carbon (HPC) nanocage with controlled oxygen electronic state around designed defects CER is reported. Alkali etching can bring in zeolite structure. In hard template strategy, type directly related degree template. More importantly, atoms be "borrowed" from framework by defective carbon. The electron density unsaturated O decreased on minor compared that large which favorable adsorption Cl- . Consequently, as-synthesized HPC nanocages show excellent performance 94 mV at current 10 mA cm-2 good stability, superior commercial precious metal catalyst dimensionally stable anode (DSA), best reported materials. materials provide an option metal-free significant activities.
Language: Английский
Citations
40
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146531 - 146531
Published: Oct. 11, 2023
Language: Английский
Citations
31