Tesla has made even more battery improvements on its new ‘million-mile battery’ now with less cobalt, which could result in lower cost and even more energy density.
Last year, we were the first to report on Tesla’s battery research partner, Jeff Dahn and his team at Dalhousie University, unveiling the impressive results of tests on a new battery cell that could last over 1 million miles in an electric vehicle.
The new battery tested is a Li-ion battery cell with a next-generation “single crystal” NMC 532 cathode and a new advanced electrolyte, which they patented.
They were able to show over 4,000 cycles in the battery cells made with the novel cathode.
Building on the research done on that battery, Dahn and his students Yulong Liu and Jessie Harlow have published a new research paper called ‘Microstructural Observations of “Single Crystal” Positive Electrode Materials Before and After Long Term Cycling by Cross-section Scanning Electron Microscopy’ in the Journal of The Electrochemical Society.
In the paper, they showed how they achieved high cycling data for NMC 622 and NMC 811 batteries while using even less cobalt than in NMC 532 and achieving even greater energy density.
To Read More: https://electrek.co/2020/05/05/tesla-million-mile-battery-less-cobalt-higher-energy-density/
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