How to make batteries last longer
7:14
How to derive the lever rule
14:10
3 жыл бұрын
How to mill and drill metal
5:25
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6:11
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DE workshop video outtakes
0:55
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Пікірлер
@YXu-kw8me
@YXu-kw8me 2 күн бұрын
like I am taking lecture hhh
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy
@PravdaSeed
@PravdaSeed 3 күн бұрын
🔋 Thanks Billy.
@PravdaSeed
@PravdaSeed 3 күн бұрын
🌀🔋 Thanks
@PravdaSeed
@PravdaSeed 3 күн бұрын
🌀🔋 Thanks
@CapsCtrl
@CapsCtrl 9 күн бұрын
Great video, straight to the point and explains all the relevant information, thanks! 🛡✨️
@BillyWu
@BillyWu 9 күн бұрын
Thanks. Glad to hear it was useful
@dad_uchiha1707
@dad_uchiha1707 9 күн бұрын
I saw the graph and got instantly confused
@rumely7232
@rumely7232 17 күн бұрын
love
@BillyWu
@BillyWu 16 күн бұрын
Hope you found it useful
@iansingleton7484
@iansingleton7484 18 күн бұрын
Can it be used in the rain
@BillyWu
@BillyWu 16 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
@Brad656
@Brad656 19 күн бұрын
NO NO NO. The charge and dis-charge curves are crap, as is the capacity.
@samslap3578
@samslap3578 19 күн бұрын
Health department will , give them a zero just because of one person
@samslap3578
@samslap3578 19 күн бұрын
She supposed to have gloves on when touching products
@dariomarquez12
@dariomarquez12 20 күн бұрын
What an awesome channel!! You've got my subscription for learning more on battery technology
@BillyWu
@BillyWu 20 күн бұрын
Thanks! Appreciate it
@ParkourRunFree
@ParkourRunFree 27 күн бұрын
Excellent Video
@BillyWu
@BillyWu 26 күн бұрын
Thanks!
@valramsingh8360
@valramsingh8360 27 күн бұрын
yOUR VIDEOS ARE VERY VERY GOOD.
@BillyWu
@BillyWu 27 күн бұрын
Thanks!
@valramsingh8360
@valramsingh8360 25 күн бұрын
@@BillyWu anytime
@andro3267
@andro3267 28 күн бұрын
Very good content. Thx a lot!!
@BillyWu
@BillyWu 27 күн бұрын
Thanks! Glad it was helpful
@MikeEnergy_
@MikeEnergy_ 29 күн бұрын
Excellent presentation Dr. Wu
@BillyWu
@BillyWu 28 күн бұрын
Thanks!
@evinism
@evinism Ай 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.
@BillyWu
@BillyWu Ай бұрын
Thanks. Glad to hear these videos have been helpful
@yingerxu7109
@yingerxu7109 Ай бұрын
Can you help me understand the time-temperature-transformation diagram and the terms related to it? Please please please
@BillyWu
@BillyWu Ай 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
@EphraimMollandy
@EphraimMollandy Ай 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
@vankajayalakshmi
@vankajayalakshmi Ай бұрын
Very nice
@BillyWu
@BillyWu Ай бұрын
Thanks
@_neophyte
@_neophyte Ай бұрын
good job to whoever named "cast iron"
@BillyWu
@BillyWu Ай бұрын
🙂
@user-hp5xh6fu7p
@user-hp5xh6fu7p Ай бұрын
Prof : can I get your email please.. I have project in annealing
@user-sv1rn7jl8y
@user-sv1rn7jl8y Ай 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.
@BillyWu
@BillyWu Ай 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
@davidvennel720
@davidvennel720 Ай бұрын
This was great, I learned a lot. Thanks Prof. Wu!
@BillyWu
@BillyWu Ай бұрын
Thanks. Glad to hear it was useful
@Jetter638
@Jetter638 Ай бұрын
Great video....thx!
@BillyWu
@BillyWu Ай бұрын
Thanks. Glad to hear it was useful
@6969smurfy
@6969smurfy Ай 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.
@anushaislam6049
@anushaislam6049 2 ай бұрын
this really helped...
@BillyWu
@BillyWu 2 ай бұрын
Glad to hear it was helpful
@vikaspanchal7564
@vikaspanchal7564 2 ай бұрын
Can you please share ppt?
@shaneoneill2254
@shaneoneill2254 2 ай бұрын
Thanks for informing me of other performances. I can add
@sirengokeith8716
@sirengokeith8716 2 ай бұрын
Nice one
@BillyWu
@BillyWu 2 ай бұрын
Thanks
@sengottuvelavan
@sengottuvelavan 2 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.
@taxfree4603
@taxfree4603 2 ай бұрын
This is a tough subject, how long did it take you to understand it completely
@Charvak-Atheist
@Charvak-Atheist 2 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.
@BillyWu
@BillyWu 2 ай бұрын
Agreed, energy density is less important in grid applications with cost a key driver, though we also need good lifetime
@6969smurfy
@6969smurfy Ай бұрын
Grid scale is A foolish endeavor, micro macro scale is a smarter way to apply your brain matter too
@user-rt5sp4de1h
@user-rt5sp4de1h 2 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?
@BillyWu
@BillyWu 2 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.
@Davidutul
@Davidutul 2 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_Science
@Feed_Science 2 ай бұрын
why melting point for eutectic composition is lower than eighter of the elements
@alessandrocastelnuovo4436
@alessandrocastelnuovo4436 3 ай бұрын
Wow
@BillyWu
@BillyWu 2 ай бұрын
Thanks
@v4led
@v4led 3 ай бұрын
What a bad factory
@DrBretPalmer
@DrBretPalmer 3 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
@redjohn20001
@redjohn20001 3 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.
@BillyWu
@BillyWu 3 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.
@Telencephelon
@Telencephelon 3 ай бұрын
What's the hold up? Why aren't there already massive capacities of these batteries?
@Telencephelon
@Telencephelon 3 ай бұрын
Oh. The answer is right there at 8:40. Great video
@BillyWu
@BillyWu 3 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
@JusticeAlways
@JusticeAlways 3 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!👍
@BillyWu
@BillyWu 3 ай бұрын
Thanks. Appreciate the comment and glad to hear it was useful
@rodrigojesus8961
@rodrigojesus8961 3 ай бұрын
Thank you very much, this helped light years of work, it is so well explained, thank you my friend
@BillyWu
@BillyWu 3 ай бұрын
Glad it helped
@litestuffllc7249
@litestuffllc7249 3 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.
@BillyWu
@BillyWu 3 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
@user-mx5we1li2l
@user-mx5we1li2l 3 ай бұрын
Incredible lecture!
@BillyWu
@BillyWu 3 ай бұрын
Many thanks!