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

Runming Tao; Bryan Steinhoff; Conrad H. Sawicki; Jaswinder Sharma; Kahla Sardo; Amer Bishtawi; Tillman Gibbs; Jianlin Li

doi:10.1016/j.jpowsour.2023.233379

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

Runming Tao, Bryan Steinhoff, Conrad H. Sawicki, Jaswinder Sharma, Kahla Sardo, Amer Bishtawi, Tillman Gibbs, Jianlin Li

Energy Storage and Conversion Manufactur

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Dry processing of lithium-ion battery electrodes facilely realizes the powder-to-film manner, which is thus regarded as a highly promising strategy for lithium-ion battery manufacturing. However, a fundamental understanding of the impact of the involved dry mixing is still rarely reported. Herein, the degree of dry mixing is monitored by the dry mixing time, and a set of dry-processed electrodes with different degree of dry mixing is accordingly prepared and comprehensively studied. This work novelly reveals that the degree of dry mixing exhibits pronounced impact on the morphology, the homogeneity of electrode components and the degree of PTFE fiberization, which leads to difference in the mechanical strength and electrochemical performance of dry-processed electrodes. Accordingly, it is suggested that a moderate degree of dry mixing is preferred for high-performance dry-processed lithium-ion battery electrodes.

Original language	English
Article number	233379
Journal	Journal of Power Sources
Volume	580
DOIs	https://doi.org/10.1016/j.jpowsour.2023.233379
State	Published - Oct 1 2023

Funding

This research at Oak Ridge National Laboratory (ORNL), managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE-AC05-00OR22725, was sponsored by the DOE Advanced Materials and Manufacturing Technologies Office . The SEM characterization were performed at the Center for Nanophase Materials Sciences at ORNL, which is a DOE Office of Science User Facility. The authors acknowledge Navitas System, Cabot Corporation and Arkema for their assistance and corporation. The authors also thank Dr. Georgios Polizos from ORNL and Yu Gu from Case Western Reserve University for their assistance on the scheme plotting and EIS fitting, respectively. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The DOE will provide public access to these results of federally sponsored research under the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).This research at Oak Ridge National Laboratory (ORNL), managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE-AC05-00OR22725, was sponsored by the DOE Advanced Materials and Manufacturing Technologies Office. The SEM characterization were performed at the Center for Nanophase Materials Sciences at ORNL, which is a DOE Office of Science User Facility. The authors acknowledge Navitas System, Cabot Corporation and Arkema for their assistance and corporation. The authors also thank Dr. Georgios Polizos from ORNL and Yu Gu from Case Western Reserve University for their assistance on the scheme plotting and EIS fitting, respectively. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The DOE will provide public access to these results of federally sponsored research under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Keywords

Dry mixing
Dry process
Electrode engineering
High-loading electrodes
Lithium-ion batteries

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10.1016/j.jpowsour.2023.233379

Cite this

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title = "Unraveling the impact of the degree of dry mixing on dry-processed lithium-ion battery electrodes",

abstract = "Dry processing of lithium-ion battery electrodes facilely realizes the powder-to-film manner, which is thus regarded as a highly promising strategy for lithium-ion battery manufacturing. However, a fundamental understanding of the impact of the involved dry mixing is still rarely reported. Herein, the degree of dry mixing is monitored by the dry mixing time, and a set of dry-processed electrodes with different degree of dry mixing is accordingly prepared and comprehensively studied. This work novelly reveals that the degree of dry mixing exhibits pronounced impact on the morphology, the homogeneity of electrode components and the degree of PTFE fiberization, which leads to difference in the mechanical strength and electrochemical performance of dry-processed electrodes. Accordingly, it is suggested that a moderate degree of dry mixing is preferred for high-performance dry-processed lithium-ion battery electrodes.",

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author = "Runming Tao and Bryan Steinhoff and Sawicki, {Conrad H.} and Jaswinder Sharma and Kahla Sardo and Amer Bishtawi and Tillman Gibbs and Jianlin Li",

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AU - Sawicki, Conrad H.

AU - Sharma, Jaswinder

AU - Sardo, Kahla

AU - Bishtawi, Amer

AU - Gibbs, Tillman

AU - Li, Jianlin

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AB - Dry processing of lithium-ion battery electrodes facilely realizes the powder-to-film manner, which is thus regarded as a highly promising strategy for lithium-ion battery manufacturing. However, a fundamental understanding of the impact of the involved dry mixing is still rarely reported. Herein, the degree of dry mixing is monitored by the dry mixing time, and a set of dry-processed electrodes with different degree of dry mixing is accordingly prepared and comprehensively studied. This work novelly reveals that the degree of dry mixing exhibits pronounced impact on the morphology, the homogeneity of electrode components and the degree of PTFE fiberization, which leads to difference in the mechanical strength and electrochemical performance of dry-processed electrodes. Accordingly, it is suggested that a moderate degree of dry mixing is preferred for high-performance dry-processed lithium-ion battery electrodes.

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KW - Electrode engineering

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

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Keywords

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