Influence of Mixing Process on the Performance of Electrodes Made by a Dry Coating Method

Ming Wang; Kubra Uzun; Bradley R. Frieberg; Jiazhi Hu; Anita Li; Xiaosong Huang; Yang Tse Cheng

doi:10.1149/1945-7111/acb389

Influence of Mixing Process on the Performance of Electrodes Made by a Dry Coating Method

Ming Wang, Kubra Uzun, Bradley R. Frieberg, Jiazhi Hu, Anita Li, Xiaosong Huang, Yang Tse Cheng

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

Abstract

Thick NMC-LMO blend positive electrodes were manufactured using dry-powder electrostatic spray deposition (ESD) to avoid the use of unwanted solvents. The effects of two dry powder mixing processes prior to ESD on the dry-made electrodes were investigated by peel tests, electrochemical techniques, and microscopic analyses. Electrodes made using high-speed mixing had a dense carbon black/binder layer on the active materials (AM), limiting their contact area with the electrolyte and decreasing the ionic conductivity. Electrodes made using ball mill mixing exhibited a porous structure, enabling more AM-electrolyte contact, thus improving ionic conductivity and lowering charge transfer resistance.

Original language	English
Article number	010541
Journal	Journal of the Electrochemical Society
Volume	170
Issue number	1
DOIs	https://doi.org/10.1149/1945-7111/acb389
State	Published - Jan 2023

Bibliographical note

Funding Information:
We thank Jacob Hempel and Bhamiti Sharma from Department of Physics & Astronomy, University of Kentucky, for helpful discussions. The work was partially supported by General Motors Research & Development Center.’

Publisher Copyright:
© 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1945-7111/acb389

Cite this

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abstract = "Thick NMC-LMO blend positive electrodes were manufactured using dry-powder electrostatic spray deposition (ESD) to avoid the use of unwanted solvents. The effects of two dry powder mixing processes prior to ESD on the dry-made electrodes were investigated by peel tests, electrochemical techniques, and microscopic analyses. Electrodes made using high-speed mixing had a dense carbon black/binder layer on the active materials (AM), limiting their contact area with the electrolyte and decreasing the ionic conductivity. Electrodes made using ball mill mixing exhibited a porous structure, enabling more AM-electrolyte contact, thus improving ionic conductivity and lowering charge transfer resistance.",

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AU - Li, Anita

AU - Huang, Xiaosong

AU - Cheng, Yang Tse

N1 - Funding Information: We thank Jacob Hempel and Bhamiti Sharma from Department of Physics & Astronomy, University of Kentucky, for helpful discussions. The work was partially supported by General Motors Research & Development Center.’ Publisher Copyright: © 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited.

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Influence of Mixing Process on the Performance of Electrodes Made by a Dry Coating Method

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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