Lignocellulolytic Bacterial Engineering for Tailoring the Microstructure of Hard Carbon as a Sodium-Ion Battery Anode with Fast Plateau Kinetics

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Lignocellulosic biomass-derived pyrolysis hard carbon (LCB-HC) shows promising commercial potential as an anode material for sodium-ion batteries (SIBs). LCB compromises multiple biopolymer sources, including cellulose, hemicellulose, and lignin, which influence the formation microstructure of HC. However, poor plateau kinetics LCB-HC is one main obstacles that severely limits its energy density with high power density, could be attributed to narrow interlayer distance lack abundant closed pores intercalation/filling Na+. Herein, we proposed a bottom-up approach tailoring by regulating components precursor at molecular level using bioenzymes secreted lignocellulolytic bacteria. This mild efficient enzymatic hydrolysis pathway partially depolymerized biopolymers basswood specifically, thereby enabling construction small curved-graphite domain architecture increased enlarged LCB-HC, benefiting low-voltage Na+ storage accelerated kinetics. As result, basswood-derived HC delivers reversible capacity 366.4 mAh g–1 performed remarkable retainability proportion 74.3% even current 1000 mA g–1. Such microbial-chemistry-assisted provided insights into construct high-performance SIB materials.

Language: Английский

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Dendrite‐Free Li Metal Anode Achieved by Bi‐Functional Host of NH₂‐Modified UiO‐66 on Zn‐Embedded Porous Carbon Nanofibers

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Abstract 3D carbonaceous host is considered as an ideal candidate for stabilizing Li metal anode (LMA) owing to its lightweight and high electronic conductivity. Nonetheless, the surface chemistries of carbon materials at different locations should be regulated modify lithiophilicity ion diffusion. In this study, a metal–organic frameworks‐engaged strategy design core–shell porous with mixed ionic/electronic conducting feature developed. To specific, Zn‐embedded nanofibers (Zn/CF) are designed cores using ZIF‐8 particles precursors pore‐forming agents. Meanwhile, NH 2 ‐functionalized UiO‐66 (NH ‐UiO‐66) nanoparticles in‐situ grown on above fibers promoted ions migration. As result, composite LMA bi‐functional Zn/CF@NH ‐UiO‐66 demonstrates enhanced stability rate performance. Particularly, obtained asymmetric cell delivers stable operation up 500 cycles 1 mA cm −2 . Moreover, corresponding Li‐Zn/CF@NH ‐UiO‐66//LiFePO 4 full shows high‐capacity retention 93.4% over 1700 C (1 ≈169 g −1 ).

Language: Английский

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Dynamic regulation of lithium ions eliminating the lithium dendrite formation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161452 - 161452

Published: March 1, 2025

Language: Английский

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Interfacial structure design enables rapid reaction kinetics for high-voltage NCM 613 cathodes

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161523 - 161523

Published: March 1, 2025

Language: Английский

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Enhancement of Dendrite-Free Lithium Metal Anode Performance through LiF-Rich Protective Layer for Lithium Metal Batteries

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 3240 - 3248

Published: March 21, 2025

Lithium metal batteries represent a cutting-edge class of energy storage devices, yet the high surface diffusion barrier lithium prompts preferential Li+ accumulation and deposition, fostering growth dendrites. To address this challenge, straightforward solvent-based approach is employed to create LiF-rich protective layer on anode. The uniform LiF interface facilitates transport effectively induces plating stripping while inhibiting formation Notably, symmetric battery incorporating anode modified with appropriate demonstrates substantially enhanced cycling performance. Importantly, full cell matched LiFePO4 displays an initial capacity 146.3 mAh g-1 retention rate 92.7% after 300 cycles. Its practical application has also been verified in for PEO solid-state batteries. This work underscores potential boost dendrite-free

Language: Английский

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LiC₆@Li as a Promising Substitution of Li Metal Counter Electrode for Low‐Temperature Battery Evaluation

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Li metal, as a counter electrode, is widely used for electrode materials evaluation in coin type half-cells. However, whether this configuration suitable different working conditions has often been neglected. Herein, the large resistance and high cathodic/anodic over-potential of metal at low temperature are highlighted, revealing its incompetence on cryogenic condition. In view this, novel LiC6@Li composite developed promising substitution evaluation. Li+ de-intercalated from LiC6 preferentially due to interface LiC6, presenting 0.05 V (67 µA cm-2) -20 °C, which ten times lower than that metal. Moreover, rapid lithium replenishment into enables stable potential LiC6@Li. Consequently, LiC6@Li-based half-cells enabled more precise storage specific capacities series temperature. As an extension, KC8@K also successfully prepared superior K This work proposes accurately evaluating subfreezing scenarios, demonstrating necessity specialized systems particular operating conditions.

Language: Английский

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Electrochemical In Situ Characterization Techniques in the Field of Energy Conversion

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract With the proposal of “carbon peak and carbon neutrality” goals, utilization renewable energy sources such as solar energy, wind tidal has garnered increasing attention. Consequently, development corresponding conversion technologies become a focal point. In this context, demand for electrochemical in situ characterization techniques field is gradually increasing. Understanding microscopic reactions their mechanisms depth common concern shared by both academia industry. Therefore, holds critical significance. This paper comprehensively reviews from three aspects: spectral reactions, spatial distribution optical surface refractive index associated with reactions. These characteristics are described detail, future direction technology prospected, aim promoting advancement conversion, facilitating transformation, thus advancing goals neutrality.”

Language: Английский

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Insertion Type Li₃VO₄ Lithiophilic Sites Boosting Dendrite‐Free Lithium Deposition in Trapping‐and‐leveling Model

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Abstract Lithium (Li) metal batteries offer high energy densities but suffer from uncontrolled lithium deposition, causing serious dendrite growth and volume fluctuation. Tailorable Li nucleation uniform early‐stage plating are essential for homogenous deposition. Herein, insertion type 3 VO 4 is first demonstrated as efficient lithiophilic sites trapping + ions nucleation. By homogenizing the distribution of electric field flux via an ingenious architecture design with nanodots grown on carbon fibers (LVO@CNFs), leveling deposition after also realized. These, together, result in smooth dendrite‐free LVO@CNFs a trapping‐and‐leveling model, giving rise to unprecedented performance (highly stable plating/stripping exceeding 2500 h at 2 mA cm −2 under capacity, high‐capacity retention 82.5% over 500 cycles Li@LVO@CNFs//LiFePO battery). The successful host insertion‐type may pave new way long lifespan batteries.

Language: Английский

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Achieving Ultra‐Thin Solid Electrolyte Interphase for High‐Performance Lithium Metal Anodes via Chloride‐Assisted Electrochemical Corrosion

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract The thickness and composition of the solid electrolyte interphase (SEI) on lithium (Li) metal are critical factors influencing dendrite growth. This study introduces a novel selection strategy based electrochemical corrosion principles. By employing LiCl LiNO 3 simultaneously, itself has high donor number, low desolvation energy, Li⁺ transference number conductivity, moderate stability window. In addition, it dynamically reduces SEI reactivates dead Li, forming ≈100 nm enriched with LiF Li 2 O anode, which ensures stable cycling symmetric cells for 2000 h at current density 5 mA cm⁻ . Consequently, using LiFePO 4 (LFP) as cathode ‐LiCl‐added exhibit excellent performance 1600 cycles 680 g⁻ 1 Even thin (5 µm)|LFP cell retains 95% capacity after 70 170 universality feasibility this design also validated in diverse battery chemistries such anode‐free Cu|LFP, Li|LiNi 0.8 Mn 0.1 Co (NMC811), Li|S cells, well pouch high‐loading LFP NMC811 cathodes, showcasing promising batteries.

Language: Английский

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In Situ Optical Observation of Lithium Dendrite Pattern in Solid Polymer Electrolytes

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 3, 2024

Abstract Solid polymer electrolytes (SPEs) have been treated as a viable solution to build high‐performance solid‐state lithium metal batteries (SSLMBs) at the industrial level, bypassing safety and energy density dilemmas experienced by today's lithium‐ion battery technology. To promote wider application of SPEs‐based SSLMBs, chemical electrochemical characteristics (Li°) electrode in SPEs be clearly elucidated. In this work, morphological evolution Li° SSLMBs is comprehensively investigated, via customized cell allowing optical microscopic analyses. The results demonstrate that differing from inorganic solid electrolytes, elastic feature eliminates “memory effect” dendrite formation, which previously formed dendrites can dissolved resulting space simultaneously occupied electrolyte components, instead leaving for second‐round growth dendrites. Furthermore, largely increased electronic conductivities as‐formed interphases between are found responsible notoriously soft short‐circuit behavior observed during cycling. These findings bring fresh understanding formation SPE‐based cells, vital improving long‐term stability other related high‐energy systems.

Language: Английский

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