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 | |
| State | Published - Jan 2023 |
Bibliographical note
Publisher Copyright:© 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited.
Funding
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.’
| Funders |
|---|
| General Motors Research & Development Center |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry
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