Electrochemical Processes and Reactions In Rechargeable Battery Materials Revealed via In Situ Transmission Electron Microscopy

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(2)

Published: Nov. 16, 2023

Abstract Rechargeable batteries that make renewable energy resources feasible for electrification technologies have been extensively investigated. Their corresponding performance is strongly dependent on the structural characteristics and chemical dynamics of internal electrode electrolyte materials under operating conditions. To enhance battery lifetime, a comprehensive understanding structure‐dynamics‐performance correlation such different working conditions great significance. Fortunately, in situ transmission electron microscopy (TEM) encompassing high‐resolution imaging, diffraction, spectroscopic analysis, offers unprecedented insights into nano/atomic scale changes degradation pathways rechargeable operational Such are pivotal deep‐rooted reaction mechanisms structure‐activity interplay within materials. This work, therefore, highlights advances TEM's utility unveiling dynamic physical real‐time batteries. Electrochemical processes systematically explored summarized. Moreover, technical progress, challenges, valuable provided by TEM techniques addressing critical issues underscored. The work concludes with discussion emerging research directions hold potential to revolutionize field near future.

Language: Английский

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Si-doped ZnAl-LDH nanosheets by layer-engineering for efficient photoelectrocatalytic water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123706 - 123706

Published: Jan. 8, 2024

Language: Английский

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Designing Compatible Ceramic/Polymer Composite Solid‐State Electrolyte for Stable Silicon Nanosheet Anodes

Small, Journal Year: 2024, Volume and Issue: 20(25)

Published: Jan. 18, 2024

Abstract The commercialization of silicon anode for lithium‐ion batteries has been hindered by severe structure fracture and continuous interfacial reaction against liquid electrolytes, which can be mitigated solid‐state electrolytes. However, rigid ceramic electrolyte suffers from large electrolyte/electrode resistance, polymer undergoes poor ionic conductivity, both are worsened volume expansion silicon. Herein, dispersing Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) into poly(vinylidene fluoride)‐hexafluoropropylene (PVDF‐HFP) poly(ethylene oxide) (PEO) matrix, the PVDF‐HFP/PEO/LATP (PHP‐L) with high conductivity (1.40 × 10 −3 S cm −1 ), tensile strength flexibility is designed, achieving brilliant compatibility nanosheets. chemical interactions between PVDF‐HFP PEO, LATP increase amorphous degree polymer, accelerating + transfer. Good PHP‐L contributes to adaptive variation expansion/shrinkage, ensuring swift ions Moreover, solid membrane limits electrode structural degradation eliminates growth form stable 2D interface (SEI) film, superior cyclic performance Si//PHP‐L15//LiFePO full‐cell exhibits lithium storage 81% capacity retention after 100 cycles. This work demonstrates effectiveness composite in addressing fundamental challenges anodes.

Language: Английский

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Advancements in Silicon Anodes for Enhanced Lithium‐Ion Batteries Performance: Innovations Toward Next‐Gen Superbatteries

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

ABSTRACT Silicon (Si)‐based materials have emerged as promising alternatives to graphite anodes in lithium‐ion (Li‐ion) batteries due their exceptionally high theoretical capacity. However, practical deployment remains constrained by challenges such significant volume changes during lithiation, poor electrical conductivity, and the instability of solid electrolyte interphase (SEI). This review critically examines recent advancements Si‐based nanostructures enhance stability electrochemical performance. Distinct from prior studies, it highlights application Si commercial domains, including electric vehicles, consumer electronics, renewable energy storage systems, where prolonged cycle life improved power density are crucial. Special emphasis is placed on emerging fabrication techniques, particularly scalable cost‐effective methods electrospinning sol–gel processes, which show promise for industrial adoption. By addressing both technical innovations economic considerations surrounding anodes, this provides a comprehensive roadmap overcoming existing barriers, paving way next‐generation, high‐performance batteries.

Language: Английский

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Molecular Engineering toward Robust Solid Electrolyte Interphase for Lithium Metal Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(14)

Published: Dec. 12, 2023

Lithium-metal batteries (LMBs) with high energy density are becoming increasingly important in global sustainability initiatives. However, uncontrollable dendrite seeds, inscrutable interfacial chemistry, and repetitively formed solid electrolyte interphase (SEI) have severely hindered the advancement of LMBs. Organic molecules been ingeniously engineered to construct targeted SEI effectively minimize above issues. In this review, multiple organic molecules, including polymer, fluorinated organosulfur, comprehensively summarized insights into how corresponding elastic, fluorine-rich, organosulfur-containing SEIs provided. A variety meticulously selected cases analyzed depth support arguments molecular design SEI. Specifically, evolution molecules-derived is discussed principles proposed, which beneficial guiding researchers understand architect based on molecules. This review provides a guideline for constructing molecule-derived will inspire more concentrate exploitation

Language: Английский

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Bimetallic metal-organic frameworks -derived lithiophilic and conductive MnO/Co/C enabled intermittent deposition model for high-performance lithium metal anode

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 607, P. 234597 - 234597

Published: April 27, 2024

Language: Английский

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Amorphous lithiophilic cobalt‐boride@rGO interlayer for dendrite‐free and highly stable lithium metal batteries

EcoEnergy, Journal Year: 2024, Volume and Issue: 2(2), P. 299 - 310

Published: May 13, 2024

Abstract Lithium metal batteries (LMBs) are recognized to be crucial for secondary battery technology targeting electric vehicles and portable electronic devices. However, the undesirable growth of lithium dendrites would result in reduced capacity, short‐circuit, overheating, seriously hindering practical applications LMBs. To address this issue, a neoteric lithiophilic interlayer on commercial polypropylene separator is presented first time, which constructed by amorphous CoB nanoparticles decorated graphene oxide nanosheets (CoB@rGO). Density Functional Theory calculations experimental analysis reveal remarkable lithiophilicity features CoB@rGO provide multiple Li deposition sites improved electrolyte wettability, facilitates formation durable solid interphase (SEI), reduces side reactions, improves + flux regulation long‐term cycling stability Taking advantage these merits, symmetric Li//Li cell with CoB@rGO/PP exhibits stable up 1600 h at 1 mA cm −2 mAh . Employed separator, Li//LiFePO 4 full high LiFePO loading 11 mg delivers initial specific capacity 115.3 g −1 low decay rate 0.08% per cycle after 200 cycles even 2C.

Language: Английский

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Progress in modification of micron silicon-based anode materials for lithium-ion battery

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 93, P. 112286 - 112286

Published: June 4, 2024

Language: Английский

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Robust Solid-State Na-CO₂ Battery with Na_2.7Zr₂Si₂PO_11.7F_0.3-PVDF-HFP Composite Solid Electrolyte and Na₁₅Sn₄/Na Anode

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(10), P. 12706 - 12716

Published: March 3, 2024

Solid-state Na-CO2 batteries are a kind of energy storage devices that can immobilize and convert CO2. They have the advantages both solid-state metal–air batteries. High-performance solid electrolyte electrode materials important for improving performance In this work, we investigate influence fluorine doping on structure ionic conductivity Na3Zr2Si2PO12 (NZSP). An conductive membrane was prepared by compositing inorganic Na2.7Zr2Si2PO11.7F0.3 (NZSPF3) with poly(vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP). It shows an up to 2.17 × 10–4 S cm–1 at room temperature, high sodium transfer number ∼0.70, broad electrochemical window ∼5.18 V, better mechanical strength. Furthermore, studied Na15Sn4/Na composite foil ability inhibit dendrite as anode Through density functional theory (DFT) calculations, Na15Sn4 particle has been verified strong sodiophilic property, which reduces nucleation barrier during deposition process, leading lower overpotential. The symmetric cell assembled NZSPF3-PVDF-HFP growth Na dendrites effectively maintain stability whole structure. Ru-carbon nanotube (Ru-CNTs) cathode catalysts exhibit discharge capacity 6371.8 mAh g–1 200 mA g–1, excellent cycling 1100 h, good rate performance. This work provides promising strategy designing high-performance

Language: Английский

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Enhanced Li-ion battery performance based on multisite oxygen vacancies in WO3-x@rGO negative electrode

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155383 - 155383

Published: Aug. 30, 2024

Language: Английский

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