Understanding and Improving Manufacturing Processes for Making Lithium-Ion Battery Electrodes

Al-Shroofy, Mohanad N.

doi:10.13023/etd.2017.296

Cited by 3 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optimization of electrodefabrication process for each sequence.-In order to enable an unbiased comparison of the effect of mixing sequences, a stagewise optimization strategy based on our previous work was employed, 15 as depicted in Fig. 1a.…”

Section: Methodsmentioning

confidence: 99%

“…First, it was necessary to select an industry-relevant formulation of active material/conductive additive/polymeric binder (AM/CA/B) capable of achieving expected capacity and power performance. 15 A 92 wt% LiNi 0.33 Co 0.33 Mn 0.33 O 2 (NMC111), 4 wt% carbon black (CB), and 4 wt% polyvinylidene fluoride (PVDF) formulation was selected after numerous experimental iterations. 15 Next, it was observed that a fixed ratio of NMC/CB/PVDF/NMP resulted in very different viscosities depending upon which mixing sequence was used, which could make casting difficult and prevent a fair comparison of the effects of mixing sequences.…”

Section: Methodsmentioning

confidence: 99%

“…4,[7][8][9][10] State-of-the-art LIB manufacturing involves mixing high solidcontent slurries. 4,[11][12][13] Mixing process parameters, notably the order of introducing the materials (mixing sequence) and the intensity and duration of each mixing step, can affect the electrode structure [14][15][16] and, as such, are critical in determining the quality and electrochemical performance of the battery. Different mixing sequences have been investigated to produce well-mixed slurries for various electrode materials.…”

mentioning

confidence: 99%

“…Our previous work has also shown that different mixing sequences can affect the rheological properties of slurries, and the mechanical/electrochemical properties of the electrodes. 15 However, the most important reasons for how the different mixing sequences can affect the electrode structures, mechanical properties, and C-rate performance are still unclear. We hypothesized that the distribution of CB is critically important based on a previous survey of four mixing sequences being used by industry.…”

mentioning

confidence: 99%

“…We hypothesized that the distribution of CB is critically important based on a previous survey of four mixing sequences being used by industry. 15 We then determined that they resolved into two distinct mixing sequences with respect to CB introduction order and used these to test our hypothesis and investigate the rheological behavior, microstructure, binding strength, conductivity, and C-rate performance of NMC composite electrodes.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Effects of the Mixing Sequence on Making Lithium Ion Battery Electrodes

Wang

Dang

Meyer

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

Slurry making is a critical step that can irrevocably affect the subsequent steps in battery manufacturing. Many experimental parameters, including the mixing sequence, must be considered in making the slurry. In this work, we investigated the effects of the two main industry-used mixing sequences on the rheological behavior of the slurry, and the relation of the slurry rheology to structural, mechanical, and electrochemical performance of LiNi 0.33 Mn 0.33 Co 0.33 O 2 (NMC) electrodes. We show that: (1) mixing carbon black (CB) with polyvinylidene fluoride (PVDF) solution before adding NMC can facilitate the formation of a gel-like slurry; (2) porous clusters of CB/PVDF can form around NMC after drying the gel-like slurry, providing a high C-rate capability;(3) dry powder mixing of CB and NMC can facilitate the binding of the CB to the NMC surfaces, reducing the amount of CB in the PVDF and resulting in a liquid-like slurry; (4) after drying of the liquid-like slurry, a dense CB/PVDF layer can form on the NMC surfaces; and (5) this dense layer can provide high binding strength but may block ionic transport and weaken the electronic connection, reducing the C-rate capability. Thus, it is critically important to understand the effects of mixing sequence in electrode manufacturing.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Effects of the Mixing Sequence on Making Lithium Ion Battery Electrodes

Wang

Dang

Meyer

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

Progress and Challenges in Industrially Promising Chemical Vapour Deposition Processes for the Synthesis of Large-Area Metal Oxide Electrode Materials Designed for Aqueous Battery Systems

Vernardou

2021

Materials

View full text Add to dashboard Cite

The goal of the battery research community is to reach sustainable batteries with high performance, meaning energy and power densities close to the theoretical limits, excellent stability, high safety, and scalability to enable the large-scale production of batteries at a competitive cost. In that perspective, chemical vapour deposition processes, which can operate safely under high-volume conditions at relatively low cost, should allow aqueous batteries to become leading candidates for energy storage applications. Research interest and developments in aqueous battery technologies have significantly increased the last five years, including monovalent (Li+, Na+, K+) and multivalent systems (Mg2+, Zn2+, Al3+). However, their large-scale production is still somewhat inhibited, since it is not possible to get electrodes with robust properties that yield optimum performance of the electrodes per surface area. In this review paper, we present the progress and challenges in the growth of electrodes through chemical vapour deposition at atmospheric pressure, which is one procedure that is proven to be industrially competitive. As battery systems attract the attention of many researchers, this review article might help those who work on large-scale electrical energy storage.

show abstract

Electrostatic Deposition of Bio-Composite Polymer/Hydroxyapatite Coatings on 316L Stainless Steel

Dhafer

Al-Shroofy

Al-Kaisy

2022

KEM

View full text Add to dashboard Cite

The present work aims to prepare polymer-based biocomposite coated layers by electrostatic spray method onto a 316L stainless steel substrate. Different percentages of ( 2,4, and 8) wt.% of Hydroxyapatite (HA) with (98,96, and92) wt.% of PMMA were used to prepare the composite coating. Wettability, phase composition, and surface morphology were studied using contact angle measurement, X-ray diffraction, and scanning electron microscopy techniques respectively. The results revealed that a homogenous, uniform, and crack-free coating layers were obtained. The wettability testing indicated increased hydrophobicity of the coatings with the addition of hydroxyapatite particles where the 8wt.%HA applied the highest contact angle of (104.08o).The average thickness was about (400µm) for the coating layer deposited on the substrates using the electrostatic technique, whereas the average diameter coating was about (33.95µm).

show abstract

Understanding and Improving Manufacturing Processes for Making Lithium-Ion Battery Electrodes

Cited by 3 publications

References 0 publications

Effects of the Mixing Sequence on Making Lithium Ion Battery Electrodes

Effects of the Mixing Sequence on Making Lithium Ion Battery Electrodes

Progress and Challenges in Industrially Promising Chemical Vapour Deposition Processes for the Synthesis of Large-Area Metal Oxide Electrode Materials Designed for Aqueous Battery Systems

Electrostatic Deposition of Bio-Composite Polymer/Hydroxyapatite Coatings on 316L Stainless Steel

Contact Info

Product

Resources

About