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Battery – Claudiu's reviews and comments
31 minutes | Dec 5, 2019
28. Economic and technical considerations of solid state batteries
In this podcast i discuss the following points raised by Eveline from Delft University of Technology (original text): In my group we do a lot of work with solid state inorganic electrolytes. I would be extremely interested in your view about the scale up and economics of such systems! For example, in your last Podcast … Continue reading 28. Economic and technical considerations of solid state batteries →
34 minutes | May 20, 2019
27. Chemical stability of LPS sulfide solid electrolytes : problems in paradise?
Gasteiger paper on LPS stability with PEO – 2019 LPS and LLZO inorganic solid electrolytes have been the workhorse of solid battery efforts for the past 20 years. LPS (or sulfur based) solid electrolytes have a lithium ion conductivity higher than liquid electrolytes and are softer and easier to process into separators than LLZO. However, … Continue reading 27. Chemical stability of LPS sulfide solid electrolytes : problems in paradise? →
34 minutes | May 1, 2019
26. The (only) Tesla battery cell patent
Tesla patent link Arguably the most successful electric car company in the world has (arguably) the fewest battery cell patents: 1. Tesla’s business model so far has not included cell chemistry development. The only patent they claim (in 2019) comes from the Jeff Dahn group and focuses on additives for fast charge and long lifetime … Continue reading 26. The (only) Tesla battery cell patent →
25 minutes | Apr 21, 2019
25. The dry electrode process of Maxwell Technologies (soon to be Tesla owned)
Capacitor cycle life and operating voltage are governed by the lack of impurities left over from the electrode casting process. Maxwell Technologies claims a solvent - less, dry process can double the cycle life of their capacitors. In this podcast I also discuss the viability of this dry process for manufacturing battery electrodes.
49 minutes | Apr 14, 2019
24. The “R&D” development cycle : the good, the bad and the ugly
I receive a lot of interest regarding setting up R&D programs for lithium ion batteries. In this podcast I dissect the defining elements of a successful battery R&D program. If your company is interested in this type of venture or if you are a student entering this field at an early stage, you may find … Continue reading 24. The “R&D” development cycle : the good, the bad and the ugly →
26 minutes | Apr 7, 2019
23. Cobalt free cathodes: Jeff Dahn (now with Tesla) suggests they are possible and stable
Jeff Dahn paper The first high voltage cathodes were proposed by John Goodenough in the form of LCO (lithium cobalt oxide) and they were quickly adopted as commercial materials. In an effort to lower costs (cobalt is expensive), analogous LNO (lithium nickel oxide) cathodes have recently been commercialized as doped NCM (nickel, cobalt, manganese) and … Continue reading 23. Cobalt free cathodes: Jeff Dahn (now with Tesla) suggests they are possible and stable →
31 minutes | Mar 31, 2019
22. Ni rich NCM (cathodes): how we got it, why we use it and how to keep it stable
Currently accepted cathode dogma preaches the root cause of capacity fade in Ni rich NMC is the irreversible phase change of the active material crystalline structure. However, recent findings challenge the status quo. Listen to my podcast to learn more.
29 minutes | Mar 24, 2019
21. Cathodes, cathodes, cathodes
In this podcast I review commercial cathode chemistries such as LCO, LFP, LMO and NCM/NCA.
33 minutes | Mar 17, 2019
20. Stable lithium plating with 3x capacity of commercial Li-ion cells… apparently possible @Stanford
The Holy Grail of anodes is a lithium metal anode. Taming this temperamental beast has been unsuccessful so far, but this is bound to change. In this podcast I discuss a composite separator membrane which enables plating lithium with 3x the speed and 3x the quantity (capacity) of commercial lithium ion cells.
19 minutes | Mar 10, 2019
19. Can we bypass the energy – fast charge compromise?
There are anode materials which may bypass the energy - fast charge compromise. Listen to my podcast to learn more.
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