Synergistically Inducing Ultrafast Ion Diffusion and Reversible Charge Transfer in Lithium Metal Batteries Using Bimetallic Molybdenum–Titanium MXenes

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Metal batteries have captured significant attention for high-energy applications, owing to their superior theoretical energy densities. However, practical viability is impeded by severe dendrite formation and poor cycling stability. To alleviate these issues, a 3D-structured bimetallic-Mo2Ti2C3Tx based fiber electrode was fabricated in this study analyzed experimentally computationally. The bimetallic Mo–Ti composition of MXenes synergistically achieved low binding energies with lithium. In particular, the minimal lattice mismatch between deposited Li metal Mo2Ti2C3Tx MXene anode substrate led improved respect surface. Moreover, synergy helped amplify ion diffusion reversible charge transfer. Consequently, exhibited an impressive Coulombic efficiency (99.08%) even at high current density (5 mA cm–2) fixed cutoff capacity 1 h cm–2 prolonged cycle life (650 cycles). This report highlights promising advancement addressing critical challenges facing battery operation, thereby offering approach improving performance applications.

Language: Английский

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Synergistically Tailoring Kongming-Lock Morphology and Li+/Ni2+ intermixing to Achieve Ultrahigh-Volumetric-Energy-Density Layered Li-Rich Oxide Cathodes

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104019 - 104019

Published: Jan. 1, 2025

Language: Английский

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Synergizing Interfacial Electric Field Regulation and In‐situ Robust Interphases for Stable Lithium Metal Batteries at High Currents

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Efficient cycling of lithium (Li) metal batteries (LMBs) under extremely high current conditions is critical for their practical applications. Here, we report a novel additive containing fluorine, nitrogen, and iodine elements (designated as FCS) to stabilize Li anodes in glyme-based ether electrolytes conditions. Experimental results molecular dynamics (MD) simulations demonstrate that the cation FCS selectively adsorbs on electrode surface, optimizing inner Helmholtz plane (IHP) structure effectively regulating surface electric field, thereby promoting homogeneous deposition. Simultaneously, preferential decomposition produces mechanically robust ionically conductive solid electrolyte interphase (SEI) comprising LiF, Li3N, LiI components. Consequently, with additive, Li||Cu cells remarkably average Coulombic efficiency (CE) 98.12 % at an 20 mA cm-2 over 400 cycles. Additionally, Li||SPAN maintain reversible capacity 1126 mAh g-1 0.5 A after 200 This work presents new approach simultaneously tune SEI using trace amounts paving way stable efficient LMBs high-current

Language: Английский

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Kinetics-Boosted and Dissolution-Suppressed Molybdenum-Doped vanadium dioxide for Long-Life Zinc-Ion batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160160 - 160160

Published: Feb. 1, 2025

Language: Английский

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Regulating Homogeneous Reactions for Stable Lithium Metal Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Discontinuous and uneven Li+ flux leads to inhomogeneous reactions, accelerating lithium (Li) dendrite growth reducing the utilization of active materials, which severely impacts performance metal batteries (LMBs). To address this challenge, we propose an effective homogeneous reaction design facilitated by all-aligned nanofibrous architecture, establishes continuous, uniform, rapid pathways throughout battery. This enhances diffusion dynamics ensures a uniform distribution current density, hence promoting Li nucleation at anode efficient insertion/extraction cathode. Moreover, architecture exhibits superior mechanical strength flexibility, maintaining structural stability during long-term cycling suppressing growth, thereby minimizing risk short circuits. As result, LMBs incorporating exhibit exceptional electrochemical performance. work provides valuable insights into reactions for high-performance LMBs.

Language: Английский

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Insights into Hyper-Efficient Construction of Compact Artificial SEI for Highly Reversible Mg Metal Anode

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 5616 - 5626

Published: Oct. 29, 2024

Language: Английский

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Defect-rich hard carbon designed by heteroatom escape assists sodium storage performance for sodium-ion batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156115 - 156115

Published: Sept. 1, 2024

Language: Английский

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Photoexcitation‐Enhanced High‐Ionic Conductivity in Polymer Electrolytes for Flexible, All‐Solid‐State Lithium‐Metal Batteries Operating at Room Temperature

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 29, 2024

Abstract Designing solid polymer electrolytes (SPEs) with high ionic conductivity for room‐temperature operation is essential advancing flexible all‐solid‐state energy storage devices. Innovative strategies are urgently required to develop SPEs that safe, stable, and high‐performing. In this work, we introduce photoexcitation‐modulated heterojunctions as catalytically active fillers within SPEs, guided by photocatalytic design principles, meanwhile employ natural bacterial cellulose improve the compatibility poly(ethylene oxide), coordination environment of lithium salts, optimize both ion transport mechanical properties. situ photothermal experiments theoretical calculations reveal strong photogenerated electric field produced trace oxide) under photoexcitation significantly enhances salt dissociation, increasing concentration mobile Li + . This results in a substantial increase conductivity, reaching 0.135 mS cm −1 at 25 °C, transference number 0.46. The lithium‐metal pouch cells exhibit an impressive discharge capacity 178.8 mAh g even after repeated bending folding, demonstrate exceptional long‐term cycling stability, retaining 86.7 % their initial 250 cycles 1 C (25 °C). research offers novel approach developing high‐performance batteries.

Language: Английский

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All-Solid-State Lithium–Sulfur Batteries with Robust Interphases by Utilizing Elastomeric Polymer-in-Salt Electrolytes

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: 8(1), P. 452 - 460

Published: Jan. 2, 2025

All-solid-state lithium–sulfur (Li–S) batteries have emerged as one of the most promising alternative energy storage solutions ascribed to their potentials high density, cost-effectiveness, and enhanced safety. Herein, elastomeric polymer-in-salt electrolytes (PISEs) been developed by incorporation highly dielectric curable cyclic carbonate pendent groups into polyether backbone fabricate sulfurized polyacrylonitrile (SPAN)/Li batteries. The PISEs with an intrinsic saturation coordination sites exhibit effective inhibitions dissolution lithium polysulfides growth dendrites show favorable compatibility both SPAN cathode metal anode. robust LiF-rich interphases formed between electrodes are capable effectively passivating accommodating volume expansion, enabling all-solid-sate SPAN/PISE/Li a specific capacity ∼1300 mAh gsulfur–1 long-term cycling stability (over 4 months) at ambient temperature. This work provides strategic framework for design high-performance polymer-based all-solid-state Li–S

Language: Английский

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Enhancing Polysulfide Conversion in Lithium–Sulfur Batteries through the Synergistic Effect of 2,6-Dihydroxyanthraquinone and Co Atoms

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

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