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Lithium metal (Li) has been regarded as one of the most ideal anode materials for next-generation high-energy-density batteries, but the problem of uncontrollable growth of Li dendrites leading to poor cycling stability of Li-metal batteries has seriously limited the practical application and development of Li-metal batteries. Uniform deposition of lithium is the key to solve this problem, but it is difficult to realize on commercial copper collectors (CuCCs). In this study, a simple and efficient strategy is adopted: the lithophilic surface modification of CuCCs with AgNWs, and the innovative introduction of photoluminescent nano-welding technology to achieve the stability of the silver nanowire network structure and improve the electrochemical performance. The results show that the cycling stability is improved by 170 and 140 cycles at 0.5 mA cmand 1.0 mA cm.
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http://dx.doi.org/10.1088/1361-6528/adf95a | DOI Listing |
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September 2025
Key Laboratory of Electrochemical Power Sources of Hubei Province, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
Hybrid artificial layer based on inorganic/polymer composite endows superior toughness and mechanical strength, which can achieve high stability of lithium metal anode. However, the large particle size and uneven distribution of inorganic fillers hinder the uniform flow of lithium ions across the membrane, making it difficult to achieve smooth lithium metal deposition/stripping. In this work, a chemical lithiation-induced defluorination strategy is proposed to engineer poly(vinylidene difluoride) (PVDF)-based artificial layers, enabling in situ incorporation of highly dispersed LiF nanofiller within the polymer matrix and precise control over the LiF content.
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September 2025
School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310027, P. R. China.
High-concentration electrolytes (HCEs) face inherent challenges such as high viscosity and diminished ionic conductivity caused by the formation of three-dimensional (3D) anion networks, which limit their practical applications. In this study, it is demonstrated that encapsulating HCEs within metal-organic frameworks (MOFs) effectively disrupts these 3-D networks, resulting in significantly enhanced ionic conductivity. Raman spectroscopy, nuclear magnetic resonance (NMR), and molecular dynamics (MD) simulations reveal a significant reduction in aggregates (AGGs)-state anion within MOF-confined electrolytes, confirming the reconstruction of the solvation environment.
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September 2025
School of Energy and Chemical Engineering, UNIST, Ulsan, 44919, South Korea.
All-solid-state batteries (ASSBs), equipped with highly ion-conductive sulfide solid electrolytes and utilizing lithium plating/stripping as anode electrochemistry, suffer from 1) chemical vulnerability of the electrolytes with lithium and 2) physical growth of lithium to penetrate the electrolytes. By employing an ordered mesoporous graphitic carbon (OMGC) framework between a sulfide electrolyte layer and a copper current collector in ASSB, the concerns by are addressed 1) minimizing the chemically vulnerable interface (CVI) between electric conductor and solid electrolyte, and 2) allowing lithium ingrowth toward the porous structure via Coble creep, a diffusional deformation mechanism of lithium metal along the lithium-carbon interface. The void volume of the framework is fully filled with lithium metal, despite ionic pathways not being provided separately, even without additional lithiophiles, when an enough amount of lithium is allowed to be plated.
View Article and Find Full Text PDFNatl Sci Rev
September 2025
College of Chemistry, Huazhong Agricultural University, Wuhan 430070, China.
The stress distribution in Li metal strongly affects the interfacial Li-ion diffusion, thereby influencing the morphology of plated Li and the performance of the battery. Here, we report a mechano-electrochemical coupling strategy that utilizes an arched structured carbon aerogel to achieve stable Li-plating/stripping electrochemistry. The arch-structured carbon aerogel can actively regulate stress distributions in response to the compressive stresses induced by Li deposition, generating the transition of stress from compressive on the convex surface to tensile on the concave surface, which can effectively promote the Li-migration kinetics and thus suppress the non-uniform deposition of Li.
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September 2025
College of Chemistry and Materials Engineering, Wenzhou University Wenzhou Zhejiang 325035 P. R. China
Sodium-ion batteries (SIBs) are promising alternatives to lithium-ion batteries (LIBs) owing to abundant resources and cost-effectiveness. However, cathode materials face persistent challenges in structural stability, ion kinetics, and cycle life. This review highlights the transformative potential of high-entropy (HE) strategies that leveraging multi-principal element synergies to address these limitations entropy-driven mechanisms.
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