--- res: bibo_abstract: - "Abstract\r\n Batteries capable of extreme fast-charging (XFC) are a necessity for the deployment of electric vehicles. Material properties of electrodes and electrolytes along with cell parameters such as stack pressure and temperature have coupled, synergistic, and sometimes deleterious effects on fast-charging performance. We develop a new experimental testbed that allows precise and conformal application of electrode stack pressure. We focus on cell capacity degradation using single-layer pouch cells with graphite anodes, LiNi0.5Mn0.3Co0.2O2 (NMC532) cathodes, and carbonate-based electrolyte. In the tested range (10 – 125 psi), cells cycled at higher pressure show higher capacity and less capacity fading. Additionally, Li plating decreases with increasing pressure as observed with scanning electron microscopy (SEM) and optical imaging. While the loss of Li inventory from Li plating is the largest contributor to capacity fade, electrochemical and SEM examination of the NMC cathodes after XFC experiments show increased secondary particle damage at lower pressure. We infer that the better performance at higher pressure is due to more homogenous reactions of active materials across the electrode and less polarization through the electrode thickness. Our study emphasizes the importance of electrode stack pressure in XFC batteries and highlights its subtle role in cell conditions.@eng" bibo_authorlist: - foaf_Person: foaf_givenName: Chuntian foaf_name: Cao, Chuntian foaf_surname: Cao - foaf_Person: foaf_givenName: Hans-Georg foaf_name: Steinrück, Hans-Georg foaf_surname: Steinrück foaf_workInfoHomepage: http://www.librecat.org/personId=84268 orcid: 0000-0001-6373-0877 - foaf_Person: foaf_givenName: Partha P foaf_name: Paul, Partha P foaf_surname: Paul - foaf_Person: foaf_givenName: Alison R. foaf_name: Dunlop, Alison R. foaf_surname: Dunlop - foaf_Person: foaf_givenName: Stephen E. foaf_name: Trask, Stephen E. foaf_surname: Trask - foaf_Person: foaf_givenName: Andrew foaf_name: Jansen, Andrew foaf_surname: Jansen - foaf_Person: foaf_givenName: Robert M foaf_name: Kasse, Robert M foaf_surname: Kasse - foaf_Person: foaf_givenName: Vivek foaf_name: Thampy, Vivek foaf_surname: Thampy - foaf_Person: foaf_givenName: Maha foaf_name: Yusuf, Maha foaf_surname: Yusuf - foaf_Person: foaf_givenName: Johanna foaf_name: Nelson Weker, Johanna foaf_surname: Nelson Weker - foaf_Person: foaf_givenName: Badri foaf_name: Shyam, Badri foaf_surname: Shyam - foaf_Person: foaf_givenName: Ram foaf_name: Subbaraman, Ram foaf_surname: Subbaraman - foaf_Person: foaf_givenName: Kelly foaf_name: Davis, Kelly foaf_surname: Davis - foaf_Person: foaf_givenName: Christina M foaf_name: Johnston, Christina M foaf_surname: Johnston - foaf_Person: foaf_givenName: Christopher J foaf_name: Takacs, Christopher J foaf_surname: Takacs - foaf_Person: foaf_givenName: Michael foaf_name: Toney, Michael foaf_surname: Toney bibo_doi: 10.1149/1945-7111/ac653f bibo_volume: 169 dct_date: 2022^xs_gYear dct_isPartOf: - http://id.crossref.org/issn/0013-4651 - http://id.crossref.org/issn/1945-7111 dct_language: eng dct_publisher: The Electrochemical Society@ dct_subject: - Materials Chemistry - Electrochemistry - Surfaces - Coatings and Films - Condensed Matter Physics - Renewable Energy - Sustainability and the Environment - Electronic - Optical and Magnetic Materials dct_title: Conformal Pressure and Fast-Charging Li-Ion Batteries@ ...