Thank-you. This is a really, really important paper from the labratory of Dr. Jeff Dahn at Dalhousie University in Halifax.
J. Harlow et.al (2019), "A Wide Range of Testing Results on an Excellent Lithium-Ion CellChemistry to be used as Benchmarks for New Battery Technologies", J. Electrochemical Society
This battery chemistry research will be central to the success of Tesla's future products. And this article is
Abstract:
"We present a
wide range of testing results on an excellent moderate-energy-density lithium-ion pouch cell chemistry to serve as benchmarks for academics and companies developing advanced lithium-ion and other "beyond lithium-ion" cell chemistries to (hopefully) exceed. These results are far superior to those that have been used by researchers modelling cell failure mechanisms and as such, these results are more representative of modern Li-ion cells and should be adopted by modellers.
Up to three years of testing has been completed for some of the tests. Tests include long-term charge-discharge cycling at 20, 40 and 55°C, long-term storage at 20, 40 and 55°C, and high precision coulometry at 40°C.
"Several different electrolytes are considered in this LiNi0.5Mn0.3Co0.2O2/graphite chemistry, including those that can promote fast charging. The reasons for cell performance degradation and impedance growth are examined using several methods.
We conclude that cells of this type should be able to power an electric vehicle for over 1.6 million kilometers (1 million miles) and last at least two decades in grid energy storage. The authors acknowledge that other cell format-dependent loss, if any, (e.g. cylindrical vs. pouch) may not be captured in these experiments."
© The Author(s) 2019. Published by ECS.
This is an open access article distributed under the terms of the Creative Commons**
Attribution 4.0 License (CC BY,
Creative Commons — Attribution 4.0 International — CC BY 4.0), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
[DOI:
10.1149/2.0981913jes]
Manuscript submitted July 30, 2019; revised manuscript received August 16, 2019. Published September 6, 2019.
