Anthraquinone derivatives supported by Ti3C2(MXene) as cathode materials for aluminum-organic batteries

Journal of Energy Chemistry, Journal Year: 2022, Volume and Issue: 74, P. 174 - 183

Published: July 23, 2022

Language: Английский

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Multielectron Conversion: Peculiar Transition Metal Sulfides with Mixed Vulcanized States toward High‐Capacity Metal‐Ion Storage

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(26)

Published: May 26, 2023

Abstract Transition metal sulfides with mixed vulcanized states (TMS‐mVs) possess tremendous potential to realize highcapacity, superior redox reactions, and structural reversibility for metal‐ion (M n + ) storage owing their multielectron reactions caused by the simultaneous participation of transition (TM) cations S 2 2− anions as well multifarious TM or valence states. Here, recent advances are systematically introduced regarding mainstream TMS‐mVs that can be applied M storage. These divided into two categories TMS, those sulfur‐valence (TMS‐mSs) metal‐valence (TMS‐mMs). It is found TMS‐mV anodes mainly experience three reaction mechanisms, inculding insertion‐accompanied conversion, insertion, conversion reactions. During reversible charge process, Li possibly oxidized polysulfides even S. have ability transfer more electrons than other homogeneous TMSs. TMS‐mS usually present higher theoretical specific capacities TMS‐mM anodes. In these anodes, Mo‐based, V‐based, Co‐based exhibit good electrochemical reversibility, Ni‐based moderate Fe‐based poor reversibility. The strategies enhancement performance classified composite, coating, nanostructure, heterointerface, lattice engineering.

Language: Английский

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Modified Solid Electrolyte Interphases with Alkali Chloride Additives for Aluminum–Sulfur Batteries with Enhanced Cyclability

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(20)

Published: Feb. 14, 2023

Abstract Aluminum–sulfur batteries employing high‐capacity and low‐cost electrode materials, as well non‐flammable electrolytes, are promising energy storage devices. However, the fast capacity fading due to shuttle effect of polysulfides limits their further application. Herein, alkaline chlorides, for example, LiCl, NaCl, KCl proposed electrolyte additives promoting cyclability aluminum–sulfur batteries. Using NaCl a model additive, it is demonstrated that its addition leads formation thicker, Na x Al y O 2 ‐containing solid interphase on aluminum metal anode (AMA) reducing deposition polysulfides. As result, specific discharge 473 mAh g −1 delivered in an battery with NaCl‐containing after 50 dis‐/charge cycles at 100 mA . In contrast, additive‐free only 313 under same conditions. A similar result also observed LiCl additives. When KCl‐containing employed, increases 496 h can be achieved The additive strategy insight into beneficial development long‐life

Language: Английский

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Enhanced Al‐Storage Performance by Electronic Properties Optimization and Structural Customization in MOF‐Derived Heterostructure

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Jan. 15, 2024

Abstract Chalcogenide cathodes with multi‐electron transfer characteristics are indispensable to aluminum‐ion batteries (AIBs). Nevertheless, their grievous capacity degradation and sluggish reaction kinetics remain fundamental challenges for the practical application. Herein, a Cu 2 S/Ni 3 S multiphase structure within metal‐organic frame (MOF) derived carbon decoration layer (CNS@MC) is constructed elevate intrinsic electronic properties of chalcogenide cathode realize high‐performance AIBs. The existence outer strong orbital interaction at inner heterointerfaces eliminates bandgap arises more electrons Fermi level, efficiently reducing energy barrier electron achieving high reactivity cathodes. CNS@MC also presents active solvent groups, which beneficial capture Al 3+ facilitate three‐electron charge‐storage reactions. Experimental results demonstrate that tailored possesses superior redox due sufficient surface area rapid Al‐ion diffusion during cycling. Meanwhile, robust delivers ultra‐high electrochemical stability (131.1 mAh g −1 over 3500 cycles) coulombic efficiency outstanding rate performance. This work offers new opportunities optimizing electrodes based on MOF derivatives heterostructure, providing novel thoughts designing

Language: Английский

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Surficial modification enabling planar Al growth toward dendrite-free metal anodes for rechargeable aluminum batteries

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(4), P. 1341 - 1351

Published: Feb. 4, 2024

Language: Английский

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