Dr Sai Shivareddy
speaker
363 appearances
1 recordings
1 series
first heard Feb 2026
last heard 17 Feb
Dr Sai Shivareddy’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Feb 2026 with 1.
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In the battery.
So we're talking about materials for energy storage, as I said in my PhD days 20 years ago.
My co-founder and I looked at all kinds of materials over the last decade in terms of how you can get the energy in extremely fast, overcoming the traditional problems that demand batteries had.
And they still have those.
Usually it is bottlenecks in charging because it heats up too much and too much heat's not good, right?
Fire and other things, then we'll run away.
If you could solve that problem on the input power density side, you would end up with some kind of a symmetric charge-discharge profile or an input-output power profile.
I mean, you probably are aware about capacitors and other forms of energy storage systems.
systems but they while they have more rate of charge like they can charge very fast and discharge and like symmetrically with very high power they have very limited energy stored inside them like let's say it's in the microseconds to milliseconds level so you know every power supply has these little passive energy storage units like capacitors and inductors right to do that switch mode power conversion and
It's a bit of energy stored and then it's chopped to get you DC output.
These capacitors have, I think, three orders of magnitude lower energy stored inside than lithium-ion batteries.
But I think it's between three and six, depending on the type of pure dielectric film capacitor like these other types of capacitors.
electronic capacitors multi-layer capacitors and electrolytic capacitors and then there's super capacitors and then you know we start getting into the battery domain of like seconds right so so it's like a fast response energy you have everything from like microseconds to milliseconds to seconds and to minutes and hours right so we looked at it from the microsecond level in terms of fast response
all the way to the minutes level in terms of, you know, full storage of that energy in that device in under five minutes.
That's exactly how we get a rapid charge in five minutes because we looked at the materials that were the limiting factors.
Lead acid.
Great.
So that actually comes from, you know, I was talking about timescale.
So I got to the minutes level.
And what I was talking about was input power in the minutes.
Showing 81–100 of 363 · page 5 of 19
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