Advancements and Prospects of Graphite Anode for Potassium‐Ion Batteries

Small Methods, Journal Year: 2023, Volume and Issue: 7(11)

Published: Aug. 21, 2023

Potassium-ion batteries (KIBs) have recently attracted considerable attention owing to their resource abundance, low cost and environmental friendliness. Graphite as a mature commercial anode material for lithium-ion batteries, has been proved promising candidate KIBs by reversible forming potassium-graphite intercalation compounds. However, large volume expansion sluggish K+ kinetics caused the incompatibility between radius of small interlayer spacing graphite, result in poor cycle stability rate performances, hindering its practical application. Extensive research efforts focused on improving potassium storage performance graphite anodes. This review provides an overview recent advances addressing these challenges optimizing electrochemical anodes KIBs. Various strategies improve graphitic carbon anodes, such microcrystalline regulation, heteroatom doping, morphological adjustment, coating modification, are discussed, while critical issues associated with prospects advancement highlighted. The offers valuable guidelines rational structural design promotes development high-performance materials

Language: Английский

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Recent advancements in hydrometallurgical recycling technologies of spent lithium-ion battery cathode materials

Rare Metals, Journal Year: 2023, Volume and Issue: 43(3), P. 879 - 899

Published: Dec. 2, 2023

Language: Английский

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A Stress Self‐Adaptive Silicon/Carbon “Ordered Structures” to Suppress the Electro‐Chemo‐Mechanical Failure: Piezo‐Electrochemistry and Piezo‐Ionic Dynamics

Advanced Science, Journal Year: 2023, Volume and Issue: 10(29)

Published: Aug. 21, 2023

Abstract Construction of ordered structures that respond rapidly to environmental stimuli has fascinating possibilities for utilization in energy storage, wearable electronics, and biotechnology. Silicon/carbon (Si/C) anodes with extremely high densities have sparked widespread interest lithium‐ion batteries (LIBs), while their implementation is constrained via mechanical structure deterioration, continued growth the solid electrolyte interface (SEI), cycling instability. In this study, a piezoelectric Bi 0.5 Na TiO 3 (BNT) layer facilely deposited onto Si/C@CNTs drive fields upon large volume expansion electrode materials, resulting modulation interfacial Li + kinetics during providing an electrochemical reaction mechanically robust chemically stable substrate. In‐depth investigations into theoretical computation, multi‐scale in/ex situ characterizations, finite element analysis reveal improved structural stability, suppressed variations, controlled ion transportation are responsible improvement mechanism BNT decorating. These discoveries provide insight surface coupling technique between electric control behavior improve stability alloy‐based anodes, which will also spark great deal attention from researchers technologists multifunctional engineering systems.

Language: Английский

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Built-In Electric Field-Driven Ultrahigh-Rate K-Ion Storage via Heterostructure Engineering of Dual Tellurides Integrated with Ti3C2Tx MXene

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Oct. 13, 2023

Abstract Exploiting high-rate anode materials with fast K + diffusion is intriguing for the development of advanced potassium-ion batteries (KIBs) but remains unrealized. Here, heterostructure engineering proposed to construct dual transition metal tellurides (CoTe 2 /ZnTe), which are anchored onto two-dimensional (2D) Ti 3 C T x MXene nanosheets. Various theoretical modeling and experimental findings reveal that can regulate electronic structures CoTe /ZnTe interfaces, improving adsorption. In addition, different work functions between induce a robust built-in electric field at interface, providing strong driving force facilitate charge transport. Moreover, conductive elastic effectively promote electrode conductivity alleviate volume change heterostructures upon cycling. Owing these merits, resulting /ZnTe/Ti (CZT) exhibit excellent rate capability (137.0 mAh g −1 10 A ) cycling stability (175.3 after 4000 cycles 3.0 , high capacity retention 89.4%). More impressively, CZT-based full cells demonstrate energy density (220.2 Wh kg −1) power (837.2 W ). This provides general effective strategy by integrating 2D material nanocompositing designing next-generation KIBs."Image missing"

Language: Английский

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Zwitterionic ionogels with water-mediated stiffness transition for shape memory and moisture electric generation

Nano Energy, Journal Year: 2023, Volume and Issue: 120, P. 109166 - 109166

Published: Dec. 8, 2023

Language: Английский

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