Lithium-Ion Cells in Automotive Applications: Tesla 4680 Cylindrical Cell Teardown and Characterization

Journal of The Electrochemical Society, Год журнала: 2023, Номер 170(12), С. 120536 - 120536

Опубликована: Дек. 1, 2023

Battery research depends upon up-to-date information on the cell characteristics found in current electric vehicles, which is exacerbated by deployment of novel formats and architectures. This necessitates open access to characterization data. Therefore, this study examines architecture performance first-generation Tesla 4680 cells detail, both electrical thermal investigations at cell-level disassembling one down material level including a three-electrode analysis. The teardown reveals complex with electrode disks hexagonal symmetry as well an winding consisting double-sided homogeneously coated cathode anode, two separators no mandrel. A solvent-free anode fabrication coating process can be derived. Energy-dispersive X-ray spectroscopy differential voltage, incremental capacity analysis confirm NMC811 pure graphite without silicon. On cell-level, energy densities 622.4 Wh/L 232.5 Wh/kg were determined while characteristic state-of-charge dependencies regarding resistance impedance behavior are revealed using hybrid pulse power electrochemical spectroscopy. comparatively high surface temperature ∼70 °C observed when charging 2C active cooling. All measurement data provided source.

Язык: Английский

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The Role of Lithium-Ion Batteries in the Growing Trend of Electric Vehicles

Materials, Год журнала: 2023, Номер 16(17), С. 6063 - 6063

Опубликована: Сен. 4, 2023

Within the automotive field, there has been an increasing amount of global attention toward usability combustion-independent electric vehicles (EVs). Once considered overly ambitious and costly venture, popularity practicality EVs have gradually due to usage Li-ion batteries (LIBs). Although topic LIBs extensively covered, not yet a review that covers current advancements from economic, industrial, technical perspectives. Specific overviews on aspects such as international policy changes, implementation cloud-based systems with deep learning capabilities, advanced EV-based LIB electrode materials are discussed. Recommendations address challenges in market Furthermore, suggestions for short-term, medium-term, long-term goals LIB-EV industry should follow provided ensure its success near future. Based this literature review, it can be suggested will continue hot years come is still large room their overall advancement.

Язык: Английский

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A high Li-ion diffusion kinetics in multidimensional and compact-structured electrodes via vacuum filtration casting

Journal of Energy Chemistry, Год журнала: 2024, Номер 93, С. 368 - 376

Опубликована: Фев. 28, 2024

Язык: Английский

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Removing electrochemical constraints on polytetrafluoroethylene as dry-process binder for high-loading graphite anodes

Joule, Год журнала: 2024, Номер 8(5), С. 1350 - 1363

Опубликована: Фев. 26, 2024

Язык: Английский

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Development of a feasible and scalable manufacturing method for PTFE-based solvent-free lithium-ion battery electrodes

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 151957 - 151957

Опубликована: Май 6, 2024

Conventional wet-electrode manufacturing encounters challenges in producing thicker electrodes due to issues related solvent evaporation. This study introduces a novel method for fabricating solvent-free dry using polytetrafluoroethylene (PTFE) as binder, representing significant advancement electrode processes. By eliminating the use of solvents, this not only addresses these but also offers scalable and practical solution mass production. The process is meticulously structured into sequential unit operations, each specifically tailored distinct function, utilizing distinctive fibrillation properties PTFE. Intermediate product specifications phase are clearly defined, accompanied by comprehensive analysis both physical electrochemical performances. highlights influence varying PTFE contents on microstructure electrode. Notably, achieves breakthrough with an formulation NCM811/PTFE/carbon black (CB)/carbon nanotube (CNT) = 96/2.0/1.8/0.2, which demonstrates exceptional discharge rate capability 80 % at 0.5 C-rate (5 mA/cm2) under demanding parameters 10 mAh/cm2 3.8 g/cc. approach enhances microstructural paves way environmentally friendly efficient future energy storage applications.

Язык: Английский

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Advanced electrode processing for lithium-ion battery manufacturing

Опубликована: Фев. 3, 2025

Язык: Английский

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Unraveling the impact of the degree of dry mixing on dry-processed lithium-ion battery electrodes

Journal of Power Sources, Год журнала: 2023, Номер 580, С. 233379 - 233379

Опубликована: Июль 11, 2023

Язык: Английский

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Insights into the Chemistry of the Cathodic Electrolyte Interphase for PTFE-Based Dry-Processed Cathodes

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(34), С. 40488 - 40495

Опубликована: Авг. 18, 2023

Dry processing is a promising method for high-performance and low-cost lithium-ion battery manufacturing which uses polytetrafluoroethylene (PTFE) as binder. However, the electrochemical stability of PTFE binder in cathodes generated chemistry cathode electrolyte interphase (CEI) layers are rarely reported. Herein, CEI properties studied via cycling high-loading dry-processed electrodes electrolytes with LiPF6 or LiClO4 salt. Using salt can eliminate other possible F sources, allowing decomposition to be studied. The detection LiF cells confirms that undergoes side reaction(s) cathodes. When compared LiClO4, layer much thicker when used These results provide insights into may potentially enlighten development binders high efficiency long durability DP-based LIBs.

Язык: Английский

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In-situ constructing hetero-structured Mo2C-Mo2N embedded in carbon nanosheet as an efficient separator modifier for high-performance lithium-sulfur batteries

Chemical Engineering Journal, Год журнала: 2023, Номер 475, С. 146133 - 146133

Опубликована: Сен. 19, 2023

Язык: Английский

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Solvent-free NMC electrodes for Li-ion batteries: unravelling the microstructure and formation of the PTFE nano-fibril network

Frontiers in Energy Research, Год журнала: 2024, Номер 11

Опубликована: Янв. 11, 2024

The microstructure and electrochemical performance of solvent-free processed slurry cast Li(Ni 0.6 Co 0.2 Mn )O 2 (NMC622) based electrodes for Li-ion batteries has been investigated. In contrast to a moss-like PVDF-based carbon binder domain in electrodes, the PTFE had hierarchical morphology composed primary fibrils few µm diameter 100’s length that branched into secondary then ever finer fibrils, down diameters 10s nm or below. A mechanism formation branch-like observed PTFE-based is also presented. Even finest were confirmed survive typical cathode cycling conditions. showed progressive improvement capacity with increasing charge-discharge rate (up 150% at 2C) compared equivalents. faded 40% slower over 200 cycles C/3. Impedance analysis enabled reduced charge transfer resistance ionic resistance, arising from minimal obscuration active material surface no pore blockage.

Язык: Английский

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