Great video, straight to the point and explains all the relevant information, thanks! 🛡✨️
@BillyWu9 күн бұрын
Thanks. Glad to hear it was useful
@dad_uchiha17079 күн бұрын
I saw the graph and got instantly confused
@rumely723217 күн бұрын
love
@BillyWu16 күн бұрын
Hope you found it useful
@iansingleton748418 күн бұрын
Can it be used in the rain
@BillyWu16 күн бұрын
Yeah seemed to work well in the rain but tried my best to generally keep it dry as over time I suspect it could cause issues
@Brad65619 күн бұрын
NO NO NO. The charge and dis-charge curves are crap, as is the capacity.
@samslap357819 күн бұрын
Health department will , give them a zero just because of one person
@samslap357819 күн бұрын
She supposed to have gloves on when touching products
@dariomarquez1220 күн бұрын
What an awesome channel!! You've got my subscription for learning more on battery technology
@BillyWu20 күн бұрын
Thanks! Appreciate it
@ParkourRunFree27 күн бұрын
Excellent Video
@BillyWu26 күн бұрын
Thanks!
@valramsingh836027 күн бұрын
yOUR VIDEOS ARE VERY VERY GOOD.
@BillyWu27 күн бұрын
Thanks!
@valramsingh836025 күн бұрын
@@BillyWu anytime
@andro326728 күн бұрын
Very good content. Thx a lot!!
@BillyWu27 күн бұрын
Thanks! Glad it was helpful
@MikeEnergy_29 күн бұрын
Excellent presentation Dr. Wu
@BillyWu28 күн бұрын
Thanks!
@evinismАй бұрын
This (paired with the first two videos) is an absolutely incredible introduction. I feel like i understand the heat treatment process 10000x better, wow.
@BillyWuАй бұрын
Thanks. Glad to hear these videos have been helpful
@yingerxu7109Ай бұрын
Can you help me understand the time-temperature-transformation diagram and the terms related to it? Please please please
@BillyWuАй бұрын
Sure. Here's another video where I discuss different ways of strengthening metals, including heat treatment and TTT diagrams kzbin.info/www/bejne/bZ2wXoxqjdOXqac
@EphraimMollandyАй бұрын
a. It may be seen that the time to peak hardness and the peak hardness itself are a function of the ageing temperature. Why does the curve at 30 °C not obey this general trend ? b. It may be seen that at the temperatures 110 and 130 °C an initial hardness plateau occurs before the peak hardness is reached whereas this is not found at the other temperatures. i. Why is such a plateau found at those two temperatures and not at the higher temperatures? ii. Would you expect such a plateau also at 30 °C, although at longer times? help me with these questions
@vankajayalakshmiАй бұрын
Very nice
@BillyWuАй бұрын
Thanks
@_neophyteАй бұрын
good job to whoever named "cast iron"
@BillyWuАй бұрын
🙂
@user-hp5xh6fu7pАй бұрын
Prof : can I get your email please.. I have project in annealing
@user-sv1rn7jl8yАй бұрын
Sir. indeed an informative video, keep enlighten us. I request you to make some shots of TMT Bars (Primary and Secondary), and causes of failures. Thank you.
@BillyWuАй бұрын
Thanks and glad to hear it was useful. Thanks for the suggestion for future videos. I have a list of potential next ones, but just need to find the time to create them
@davidvennel720Ай бұрын
This was great, I learned a lot. Thanks Prof. Wu!
@BillyWuАй бұрын
Thanks. Glad to hear it was useful
@Jetter638Ай бұрын
Great video....thx!
@BillyWuАй бұрын
Thanks. Glad to hear it was useful
@6969smurfyАй бұрын
Thanks Dr. Wu appreciate your video. , however, troubled at the almost religion application of battery technology that has been appropriated in my absence.. Seems no one is willing to invest in the roots of development,, due to the immediate needs of smarter applications needed now.
@anushaislam60492 ай бұрын
this really helped...
@BillyWu2 ай бұрын
Glad to hear it was helpful
@vikaspanchal75642 ай бұрын
Can you please share ppt?
@shaneoneill22542 ай бұрын
Thanks for informing me of other performances. I can add
@sirengokeith87162 ай бұрын
Nice one
@BillyWu2 ай бұрын
Thanks
@sengottuvelavan2 ай бұрын
Thanks Billy Wu ....Your videos have been so helpful and gives lucid explanation. Thank you so much. I have one request. If you can make a video on Gibbs Free energy, it would be great.
@taxfree46032 ай бұрын
This is a tough subject, how long did it take you to understand it completely
@Charvak-Atheist2 ай бұрын
Na ion battery is best for Stationary Grid scale storage. As Energy density dosent matter in that case, it just need to be cheap.
@BillyWu2 ай бұрын
Agreed, energy density is less important in grid applications with cost a key driver, though we also need good lifetime
@6969smurfyАй бұрын
Grid scale is A foolish endeavor, micro macro scale is a smarter way to apply your brain matter too
@user-rt5sp4de1h2 ай бұрын
Hey, I would like to use this as a source for my research paper, is it possible I use this as a citation?
@BillyWu2 ай бұрын
Of course. Feel free to use the information here. Where appropriate, do use the original source I noted in my slides to recognise the original author works. In some places I made modifications to this and you can just refer to this resource.
@Davidutul2 ай бұрын
I still have issues with learning this and a lot of material science parts Idk why it feels hard for me to memorize Any advice?
@Feed_Science2 ай бұрын
why melting point for eutectic composition is lower than eighter of the elements
@alessandrocastelnuovo44363 ай бұрын
Wow
@BillyWu2 ай бұрын
Thanks
@v4led3 ай бұрын
What a bad factory
@DrBretPalmer3 ай бұрын
I build home made batteries. Very difficult to get a cheap chemistry that does self discharge within a few days. I'd welcome any ideas you may have for a home builder. Good video. Take care Bret
@redjohn200013 ай бұрын
How much safer is the LFP battery as some EVs have this type of battery? I have seen LFP penetrative tests on KZbin that seem to be a lot less dramatic.
@BillyWu3 ай бұрын
The exact numbers depend on the design of the battery, but LFP in general releases about half the heat of NMC and ~a quarter of the heat of NCA cells with a higher decomposition temperature as shown in slide 11. Safety characteristics ultimately depend on a number of things such as nail penetration characteristics, heat release when over heated/over charged etc.
@Telencephelon3 ай бұрын
What's the hold up? Why aren't there already massive capacities of these batteries?
@Telencephelon3 ай бұрын
Oh. The answer is right there at 8:40. Great video
@BillyWu3 ай бұрын
Thanks! Scale-up is happening already in places like China so we'll likely see these deployed soon, but this will take a bit of time to fully scale since the factories and supply chain takes time to develop and significant capital investments
@JusticeAlways3 ай бұрын
Excellent presentation....very well done. An in-depth investigation of many different materials having potential use for sodium batteries. Did not expect to find this on a KZbin video...thank you!👍
@BillyWu3 ай бұрын
Thanks. Appreciate the comment and glad to hear it was useful
@rodrigojesus89613 ай бұрын
Thank you very much, this helped light years of work, it is so well explained, thank you my friend
@BillyWu3 ай бұрын
Glad it helped
@litestuffllc72493 ай бұрын
I see your accurate ; but it must be pointed out to people - batteries do not need to be abused to catch fire. Recently a ship containing brand new just produced EVs had brand new never abused batteries catch fire burning the entire ship up. It is critical for buyers or potential buyers to realize there is a risk of fire with EV batteries even if you do not abuse them at all. This is due to dendrites; deposits that can build inside the battery which can short basically at random causing a fire; once one battery catches fire it spread to thousands of other batteries and there is really nothing that can stop that fire.
@BillyWu3 ай бұрын
Good point and agreed that there are other causes of failure in a battery also. As the quality control of battery production increases and also improved safety designs are implemented hopefully this will decrease the likelihood of these events, but right now there is still a risk to be managed