The research article presents the extensive test result of a cell using NMC 532 and aritificial graphite as the cathode and anode. By testing different electrolytes, each cell performance is compared based on calendar ageing, cyclic ageing, impact of fast charging and coloumbic efficiency of the cell. The battery degradation is also analysed post-mortem which showed no evidence of micro-cracking in the single crystal material after 5300 cycles, and no evidence of the loss of active materials.
All this concludes that the cell is projected to maintain 70% capacity after 10 years even when operating at 40⁰C. Thus, this could be the battery that can stand as benchmark to make the notorious million kilometre lifetime battery.
Type: Technical research paper
Published in 2019
Title: A Wide Range of Testing Results on an Excellent Lithium-Ion Cell Chemistry to be used as Benchmarks for New Battery Technologies
Author: Jessie E. Harlow, Xiaowei Ma, Jing Li, Eric Logan, Yulong Liu, Ning Zhang, Lin Ma, Stephen L. Glazier, Marc M. E. Cormier, Matthew Genovese, Samuel Buteau, Andrew Cameron, Jamie E. Stark and J. R. Dahn
Publisher: Journal of the Electrochemical Society