Electrochemical Performance of LiNixMnyCozO2 (NMC) Materials with Hollow Spheres Morphology. (18th November 2019)

• Record Type: Journal Article
• Authors: Zukalova, Marketa; Prochazka, Jan; Zukal, Arnost; Kavan, Ladislav
• Is Part Of: ECS transactions. Volume 95:Number 1(2019)
• Page Start: 55
• Page End: 63
• Publication Date: 2019-11-18
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/09501.0055ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Electrochemical performance of the materials NMC333, NMC622 and NMC532 with hollow spheres morphology is evaluated both on a thin electrode and in a 3D arrangement in the battery module. Cyclic voltammetry of Li insertion provides charge capacities of 124, 154 and 142 mAh/g for thin electrodes containing NMC622, 532 and 333, respectively. NMC333 in the 3D battery arrangement provides 82.5% of the theoretical capacity after 5 formatting and 5 testing cycles at the C/20 and C/10 rates, respectively. NMC622 and NMC532 exhibit, under the same conditions, capacities of 64.0% and 64.6% of the theoretical battery capacity, respectively. The worse performance of the Ni-rich NMCs is ascribed to their higher reactivity with electrolyte during formatting.