Computational and experimental studies of laser cutting of the current collectors for lithium-ion batteries

Lee, Dongkyoung; Patwa, Rahul; Herfurth, Hans; Mazumder, J.

doi:10.1016/j.jpowsour.2012.03.030

Cited by 62 publications

(27 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…manufacturing defects are issues that can occur and lead to internal short circuits, causing selfheating and severe drops in battery voltage [1][2][3][4][5].Overheating to high temperatures (130-200°C) can result in unwanted exothermic reactions, such as decomposition of thesolid-electrolyte interphase (SEI), electrolyte and/or electrodes, which can potentially lead to separator shutdown and a catastrophic thermal runaway event [6][7][8][9][10][11][12]. Extremely low temperatures can be equally problematic as well, particularly during charging, where mass transport limitations through the viscous electrolyte causes plating of lithium metal and high interfacial resistances which contribute to decreased capacity retention and possible battery failure [7,[13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Expanding the Operational Limits of the Single-Point Impedance Diagnostic for Internal Temperature Monitoring of Lithium-ion Batteries

Spinner

Love

Rose-Pehrsson

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Expanding the Operational Limits of the Single-Point Impedance Diagnostic for Internal Temperature Monitoring of Lithium-ion Batteries

Spinner

Love

Rose-Pehrsson

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

“…The material is cut using a combination of very high energy densities and high speed beam movement >0.5m/s. Cutting gas is not required, as the melt in the cut kerf is partially vaporized and partially ejected by very high vapor pressure under extreme conditions of temperature and melt pool dynamics [5].…”

Section: Conventional Pulsed and Remote Cuttingmentioning

confidence: 99%

Investigation of different laser cutting strategies for sizing of Li-ion battery electrodes

Patwa¹,

Herfurth²,

Heinemann³

et al. 2012

International Congress on Applications of Lasers &Amp; Electro-Optics

Self Cite

View full text Add to dashboard Cite

Lithium-ion batteries are currently considered to be the most promising advanced battery technology for electric vehicles that require high energy capacity. A lot of research and development activities have been focused on their development to achieve efficient mass production capabilities and to successfully commercialize the technology. This paper discusses the laser cutting process for coated anode/cathode and uncoated copper/aluminum tabs for both cylindrical and prismatic Li-ion cell designs. A number of different cutting strategies have been investigated using IR (fiber/disc) and UV laser sources in pulsed/cw configurations. An in-depth development study has been performed to understand the effect of different processing parameters on the maximum cutting speed, cut edge quality and overall energy efficiency of the process. Results show that excellent cut quality can be achieved using optimal processing parameters with cutting speeds ranging from several m/min up to 300 m/min depending on the processing requirements and the corresponding cutting approach.

show abstract

“…Laser-Aided Manufacturing (LAM), on the other hand, has many advantages, and is therefore used in a variety of applications such as automotive, aerospace, electronics and semiconductors [6][7][8][9][10][11][12][13][14][15]. LAM has an exceptionally high energy density and can be focused to highly localized areas.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser

2020

Self Cite

View full text Add to dashboard Cite

Cement-based materials are the most prevalent construction materials, and the conventional cutting techniques are still mostly used for fabricating the materials. However, these conventional cutting methods could generate undesirable micro-cracks and remove unintentional structural sections. This experimental study aims to evaluate the effects of the new fabricating method using laser on the microstructural characteristics of the cement-based materials. The experimental variables are laser cutting speed, water to cement ratio and material compositions. In order to compare the microstructure before and after the laser interaction, the microstructure of the cut surface is observed through scanning electron microscopy/energy dispersive X-Ray (SEM/EDX). After the laser interaction, the Material Removed Zone (MRZ) and Heat Affected Zone (HAZ) are observed on the cut surface. In MRZ, it is found that the glassy layer is thickened by an increasing amount of silicate-based materials in cement-based materials. In addition, it concluded that the amount of silicate-based material mixed in the cement-based materials affects the laser cutting quality.

show abstract

Computational and experimental studies of laser cutting of the current collectors for lithium-ion batteries

Cited by 62 publications

References 18 publications

Expanding the Operational Limits of the Single-Point Impedance Diagnostic for Internal Temperature Monitoring of Lithium-ion Batteries

Expanding the Operational Limits of the Single-Point Impedance Diagnostic for Internal Temperature Monitoring of Lithium-ion Batteries

Investigation of different laser cutting strategies for sizing of Li-ion battery electrodes

Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser

Contact Info

Product

Resources

About