Measuring the coating adhesion strength of electrodes for lithium-ion batteries

Haselrieder, Wolfgang; Westphal, Bastian; Bockholt, Henrike; Diener, Alexander C.; Höft, Steffi; Kwade, Arno

doi:10.1016/j.ijadhadh.2015.03.002

Cited by 158 publications

(194 citation statements)

References 27 publications

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“…[1] Better electrode cohesion and adhesion strengths generally result in a better retention of the discharge capacity. [1] Better electrode cohesion and adhesion strengths generally result in a better retention of the discharge capacity.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] Furthermore, the electrode cohesion and adhesion strengths generally increase with an increase of the binder content, [1,11] or with an increase of the particle size, [12,21] which illustrates the influence of the second parameter, Σ. Indeed, whenever the binder bears functional groups able to form strong covalent bond with the surface of the active particles and/or the current collector surface, then the cohesion and/ or the adhesion of the electrode is significantly improved.…”

Section: Introductionmentioning

confidence: 99%

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A Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si‐Based Electrodes for Li‐Ion Batteries

Hernandez

Etiemble

Douillard

et al. 2017

Advanced Energy Materials

130

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It is well known that the mechanical properties of lithium‐ion battery electrodes impact their electrochemical performance. This is especially critical for Si‐based negative electrodes, which suffer from large volume changes of the active mass upon cycling. Here, this study presents a postprocessing treatment (called maturation) that improves the mechanical and electrochemical stabilities of silicon‐based anodes made with an acidic aqueous binder. It consists of storing the electrode in a humid atmosphere for a few days before drying and cell assembly. This results in a beneficial in situ reactive modification of the interfaces within the electrode. First, the binder tends to concentrate at the silicon interparticle contacts. As a result, the cohesion of the composite film is strengthened. Second, the corrosion of the copper current collector, inducing the formation of copper carboxylate bonds, improves the adhesion of the composite film. The great improvement of the mechanical stability of the matured electrode is confirmed by in‐operando optical microscopy showing the absence of film delamination. The result is a significant electrochemical performance gain, up to a factor 10, compared to a not‐matured electrode. This maturation procedure can be applied to other types of electrodes for improving their electrochemical performance and also their handling during cell manufacturing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si‐Based Electrodes for Li‐Ion Batteries

Hernandez

Etiemble

Douillard

et al. 2017

Advanced Energy Materials

130

View full text Add to dashboard Cite

show abstract

“…(Haselrieder-Westphal method) The adhesion between the coating and the foil was tested using a standardized tape adhesion test implemented in a uniaxial material testing machine Z010 by Zwick GmbH & Co. KG (Ulm, Germany). This test allows for the application of a defined compression and tensile stress (Haselrieder et al, 2015). This e measurement technique is able to quantify the adhesion strength of porous and particulate coatings.…”

Section: Thermogravimetric Analysis Of Different Components and Of Bimentioning

confidence: 99%

“…Adhesion between coating and foil of electrode compounds after temperature treatment e measured with Haselrieder-Westphal-Bockholt method(Haselrieder et al, 2015).Fig. 5.…”

mentioning

confidence: 99%

Recycling of lithium-ion batteries: a novel method to separate coating and foil of electrodes

Hanisch

Loellhoeffel

Diekmann

et al. 2015

Journal of Cleaner Production

265

121

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“…In a rather new approach it could be shown that laser generated blind holes (50-100 µm in diameter, aspect ratio 1) in copper plates can act as mechanical anchoring for silicon-based active coating leading to a significant improvement of battery cycle retention [5]. Unfortunately, this approach cannot be transferred to state-of-the-art battery designs with X Interference period (nm -pm) Beam Apart from impact of surface structures, active materials practical size, polymer binder and the practical morphology influence strongly the adhesion strength [7]. Ongoing studies will focus on the design of the surface architectures for different electrode materials in order to achieve further improvement of film adhesion.…”

Section: Introductionmentioning

confidence: 99%

Direct laser interference patterning and ultrafast laser-induced micro/nano structuring of current collectors for lithium-ion batteries

Zheng

Smyrek

et al. 2016

SPIE Proceedings

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Laser-assisted modification of metals, polymers or ceramics yields a precise adjustment of wettability, biocompatibility or tribological properties for a broad range of applications. Due to a specific change of surface topography on micro- and nanometer scale, new functional properties can be achieved. A rather new scientific and technical approach is the laserassisted surface modification and structuring of metallic current collector foils for lithium-ion batteries. Prior to the thick film electrode coating processes, the formation of micro/nano-scaled surface topographies on current collectors can offer better interface adhesion, mechanical anchoring, electrical contact and reduced mechanical stress during cycling. These features in turn impact on the battery performance and the battery life-time. In order to generate the 3D surface architectures on metallic current collectors, two advanced laser processing structuring technologies: direct laser interference patterning (DLIP) and ultrafast laser-induced periodic surface structuring (LIPSS) were applied in this study. After laser structuring via DLIP and LIPSS, composite electrode materials were deposited by tape-casting on the modified current collectors. The electrode film adhesion was characterized by tensile strength measurements. The impact of various surface structures on the improvement of adhesive strength was discussed

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Measuring the coating adhesion strength of electrodes for lithium-ion batteries

Cited by 158 publications

References 27 publications

A Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si‐Based Electrodes for Li‐Ion Batteries

A Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si‐Based Electrodes for Li‐Ion Batteries

Recycling of lithium-ion batteries: a novel method to separate coating and foil of electrodes

Direct laser interference patterning and ultrafast laser-induced micro/nano structuring of current collectors for lithium-ion batteries

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