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Billy Wu
United Kingdom
Приєднався 4 жов 2011
Associate Professor (Reader), Dyson School of Design Engineering, Imperial College London. Researching batteries, fuel cells and 3D printing. Teaching materials, manufacturing and energy related topics. Sharing interesting content.
Personal website: www.billywu.xyz
University website: www.imperial.ac.uk/people/billy.wu
Twitter: ICBillyWu
About us: www.imperial.ac.uk/design-engineering/
Personal website: www.billywu.xyz
University website: www.imperial.ac.uk/people/billy.wu
Twitter: ICBillyWu
About us: www.imperial.ac.uk/design-engineering/
Sodium ion batteries - The low-cost future of energy storage?
Sodium-ion batteries have promising cost, safety, sustainability and performance characteristics over traditional lithium-ion batteries but what are the key materials, how do they compare with each other and what does their scale-up pathway look like?
Here in this video we'll cover how sodium-ion batteries work, the pros and cons of different materials and discuss broader materials considerations.
00:00 - Introduction
00:10 - A battery powered future
00:34 - The growing demand for lithium-ion batteries
01:08 - How abundant are the raw materials?
01:59 - Mineral production
03:08 - Sodium-ion batteries
04:42 - Lithium-ion vs sodium-ion batteries
05:33 - Performance comparison
06:47 - Cost
08:42 - Potential applications
09:33 - Inside a lithium-ion battery
10:26 - How does a sodium-ion battery work?
11:19 - Similarities and differences in materials
12:31 - Sodium-ion battery cathode materials
13:41 - Layered transition metal oxides
14:42 - Prussian blue analogues
15:28 - Polyanion
16:05 - Comparison of different sodium-ion battery cathodes
16:52 - Sodium-ion battery anode materials
17:34 - Comparison of different sodium-ion battery anodes
18:10 - What is hard carbon?
18:57 - Summary
20:22 - Closing remarks
Interested in learning more?
Here are some books which I recommend to learn more about the history of batteries and how they've impacted the world
📚 Volt Rush: The Winners and Losers in the Race to Go Green - Henry Sanderson - amzn.to/4aa81te (Amazon)
📚 The Powerhouse: America, China, and the Great Battery War - Steve LeVine - amzn.to/44O37kR (Amazon)
📚 Climate Capitalism: Winning the Global Race to Zero Emissions - Akshat Rathi - amzn.to/3JWmy0Q (Amazon)
Here in this video we'll cover how sodium-ion batteries work, the pros and cons of different materials and discuss broader materials considerations.
00:00 - Introduction
00:10 - A battery powered future
00:34 - The growing demand for lithium-ion batteries
01:08 - How abundant are the raw materials?
01:59 - Mineral production
03:08 - Sodium-ion batteries
04:42 - Lithium-ion vs sodium-ion batteries
05:33 - Performance comparison
06:47 - Cost
08:42 - Potential applications
09:33 - Inside a lithium-ion battery
10:26 - How does a sodium-ion battery work?
11:19 - Similarities and differences in materials
12:31 - Sodium-ion battery cathode materials
13:41 - Layered transition metal oxides
14:42 - Prussian blue analogues
15:28 - Polyanion
16:05 - Comparison of different sodium-ion battery cathodes
16:52 - Sodium-ion battery anode materials
17:34 - Comparison of different sodium-ion battery anodes
18:10 - What is hard carbon?
18:57 - Summary
20:22 - Closing remarks
Interested in learning more?
Here are some books which I recommend to learn more about the history of batteries and how they've impacted the world
📚 Volt Rush: The Winners and Losers in the Race to Go Green - Henry Sanderson - amzn.to/4aa81te (Amazon)
📚 The Powerhouse: America, China, and the Great Battery War - Steve LeVine - amzn.to/44O37kR (Amazon)
📚 Climate Capitalism: Winning the Global Race to Zero Emissions - Akshat Rathi - amzn.to/3JWmy0Q (Amazon)
Переглядів: 14 883
Відео
Solid-state batteries - The science, potential and challenges
Переглядів 47 тис.Рік тому
Solid-state lithium-metal batteries have the potential to be more energy dense, safer and faster charging than traditional lithium-ion batteries but what is the science behind them, potential of the technology and challenges. Here in this video we'll cover how solid-state lithium-metal batteries work, the different configurations/materials and reflect on practical considerations towards underst...
Electric vs classic Brompton. Which is the better folding bike?
Переглядів 5 тис.Рік тому
Brompton, the iconic British folding bike brand, have recently released a folding electric bike, but how does this compare with the classic non-electric version? We have a look at the performance and usability of the eBrompton #electricbike #ebike #Brompton
What are plastics? The science behind polymers
Переглядів 6 тис.Рік тому
Plastics are used in millions of applications due to their good mechanical properties, ease of manufacturing and low cost. In this video we explore the science behind these materials to provide an introduction to polymer science. 00:00 Introduction 00:08 Why are polymers important? 00:55 What is a polymer? 02:00 Chemical bonding types in polymers (Covalent bonds and van der Waals forces) 03:29 ...
How to make batteries last longer
Переглядів 4,8 тис.2 роки тому
Lithium-ion batteries generally lose their performance over time, however there are a number of steps we can take to make them last longer which we explore in this video and the science behind why each one works. 00:00 Introduction 00:23 Reduce time at high state-of-charge 02:15 Don't let the battery get too hot 03:08 Use slow charging 03:51 Avoid overcharging 05:02 Avoid overdischarge 05:42 Ke...
Battery fires! What happens when batteries are abused?
Переглядів 30 тис.2 роки тому
Lithium-ion batteries are an essential component in electric vehicles, however their safety remains a key challenge. This video explores the science behind what happens when batteries are abused and when then fail. 00:00 Introduction 00:08 What happens when batteries go wrong? 00:48 Types of battery abuse 02:12 Mechanical abuse 03:34 Nail penetration test 04:25 What happens during over-charge 0...
What are redox flow batteries and why are they important?
Переглядів 31 тис.2 роки тому
Redox flow batteries are potentially cheaper, more durable and safer than traditional lithium-ion batteries however still require further research and development in order for them to scale. Here, we explore the motivation for flow batteries, discuss how they work, the different components, chemistries and compare them. 00:00 Introduction 00:08 A changing global electricity mix 00:22 Integratio...
Let's talk about teaching: Frameworks for educational design
Переглядів 1,4 тис.3 роки тому
Educational design is the cornerstone of a great teaching experience. Traditional lectures are the mainstream method, however there are other approaches such as group working, problem-based learning and work-based learning that can facilitate other key skills. Here we'll explore different approaches to teaching, frameworks such as the 3Ss (Sequencing, Scaffolding and Spiralling), constructive a...
Apollo Transport folding e-bike overview
Переглядів 15 тис.3 роки тому
The Apollo Transport electric folding bike is an entry level folding ebike (~£800). It has 20 inch wheels, aluminium alloy frame, 6-speed Shimano gear set, a 250 W front electric hub motor and a 208 Wh lithium-ion battery pack which will provide ~20 miles worth of peddle assisted range. The plan for this ebike is to put some sensors on it to make it smarter as part of a student project :) #ebik...
Battery basics - An introduction to the science of lithium-ion batteries
Переглядів 158 тис.3 роки тому
Lithium-ion batteries are at the heart of modern day consumer electronics and electric vehicles, yet improvements in the technology are still needed for further industrial application. In this video, the basics of lithium-ion batteries are discussed along with comparisons of different types of batteries, the manufacturing process and industry landscape. 00:00 Introduction 00:15 Why batteries? 0...
Low cost metal 3D printing! Electrochemical additive manufacturing
Переглядів 77 тис.3 роки тому
3D printing is a process which allows for the creation of complex objects not possible with traditional manufacturing techniques. Most 3D printing techniques are based on plastics however metal additive manufacturing has been growing in popularity due to the high strength components they make. Selective laser melting is the most common form of metal 3D printing, however this is extremely expens...
How to make a hydrogen fuel cell power generator
Переглядів 147 тис.3 роки тому
How to make a hydrogen fuel cell power generator
Crazy guy slacklining across Lion Rock in Hong Kong
Переглядів 3713 роки тому
Crazy guy slacklining across Lion Rock in Hong Kong
Selective laser melting metal 3D printing on a Renishaw AM250
Переглядів 8483 роки тому
Selective laser melting metal 3D printing on a Renishaw AM250
Hydrogen fuel cell powered band! Red Hot Chili Peppers - By The Way
Переглядів 7413 роки тому
Hydrogen fuel cell powered band! Red Hot Chili Peppers - By The Way
How to make metal stronger by heat treating, alloying and strain hardening
Переглядів 78 тис.3 роки тому
How to make metal stronger by heat treating, alloying and strain hardening
Why is the carbon content in steel so important?
Переглядів 117 тис.3 роки тому
Why is the carbon content in steel so important?
How to use phase diagrams and the lever rule to understand metal alloys
Переглядів 113 тис.3 роки тому
How to use phase diagrams and the lever rule to understand metal alloys
Metal 3D printing with selective laser melting
Переглядів 2,2 тис.3 роки тому
Metal 3D printing with selective laser melting
How to select materials using Ashby plots and performance indexes
Переглядів 73 тис.3 роки тому
How to select materials using Ashby plots and performance indexes
Challenges in lithium-ion battery pack design and scale-up for electric vehicles
Переглядів 2,4 тис.3 роки тому
Challenges in lithium-ion battery pack design and scale-up for electric vehicles
Guitar powered by a hydrogen fuel cell generator
Переглядів 6344 роки тому
Guitar powered by a hydrogen fuel cell generator
Sky News interview - Dyson, batteries and electric vehicles - Billy Wu
Переглядів 3,3 тис.6 років тому
Sky News interview - Dyson, batteries and electric vehicles - Billy Wu
Live Sky News interview about electric vehicles and Dyson - Billy Wu
Переглядів 1,3 тис.6 років тому
Live Sky News interview about electric vehicles and Dyson - Billy Wu
Imperial College London Queen's Tower 3D print - Ultimaker2 - Time lapse
Переглядів 2206 років тому
Imperial College London Queen's Tower 3D print - Ultimaker2 - Time lapse
Time lapse of 3D printed Ultimaker robot
Переглядів 1396 років тому
Time lapse of 3D printed Ultimaker robot
218 atm 218 atm 218 atm 0.006 atm 0.006 atm 0.006 atm
Your way of explanation helps me to recall of what I studied from mechanical engineering.. especially your pronunciation easy to follow first non native English spoken person
Thanks. Glad to hear it was helpful
excellent
Thanks
How did people find out about this? Or is it just a theory?
Great question! Iron has been one of the most critical materials, defining an entire age, due to its good mechanical properties. Iron smelting itself has been around for a long time, but pure iron is perhaps too ductile to be useful for most industrial applications. Early smelters learnt, likely through trial and error, that the addition of carbon enhanced the mechanical properties to make steel. Later developments in material science, then allowed us to more systematically understand what was going on, with phase diagrams a useful way of mapping the composition-phase relationship towards engineering materials with the properties we are aiming for. It's quite a powerful approach which hopefully will inspire people to learn more about material science.
Thanks a lot! this video really cleared my concepts about the topic and in a very simple way.👍
Glad it was useful
NMC price lower than LFP and LFP installed cost at USD ~ $600/kWh looks very high.
You're right. This video was from a few years ago and the source was a few years back before then. Much has changed since then with price drops a lot more rapid than many had expected
3:30 the minecraft iron ore clock killed me 💀💀💀💀
Wonder if you could add a system like this to a boat and hook up additional solar panels and make your own hydrogen fuel?
Fuel cell systems could certainly power boats. You could have a solar system also but would need to have an electrolyser to split the water to hydrogen and then compress it for storage which is a bit costly and complex at small scale. A battery system could be a simpler and more efficient way to collect solar; working alongside a fuel cell system
@@BillyWu If I understand how fuel cells work then its comparable to a normal gas engine as far as power density but with hydrogen as fuel. If you have a solar/battery setup and the fuel cells as the backup you could effectively live off grid and never need to invest anything more than the initial cost of the whole system rather than having to rely on something like a diesel engine. I love the idea of only having to earn enough for repairs and food on a boat and this could be an option someday for making boat living a more viable option.
❤❤Thanks Billy, great presentation. 👍
Thanks. Glad itnwas useful
Great system, I'd like to build one too.
Thanks. The system is a few years old now so probably better components exist now. Previously it was quite expensive so getting the economics right was challenging for commercial via ability as a generator
Made so easy to understand the basics .. thank you sir😇🙏
Thanks. Glad it was useful
ACCORDING TO MY RESEARCH I noticed that in electrochemistry it is the migration of bonds which is at stake rather than that of ions, this is where the secret of the solid electrolyte lies
wonderful video!
Thanks
do you select material before the geometric and force analysis ? i have always found it easier to calculate the maximum stress the part is subjected to and after that I would select material with factor of safety in mind?
Hello, in the TTT-diagram, shouldn't the cooling lines be straight (temperature held stable) when entering the red pearlite part? Or is that not required? thanks!
like I am taking lecture hhh
🔋 Thanks Billy
🔋 Thanks Billy
🔋 Thanks Billy
🔋 Thanks Billy
🔋 Thanks Billy
🔋 Thanks Billy.
🌀🔋 Thanks
🌀🔋 Thanks
Great video, straight to the point and explains all the relevant information, thanks! 🛡✨️
Thanks. Glad to hear it was useful
I saw the graph and got instantly confused
love
Hope you found it useful
Can it be used in the rain
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
NO NO NO. The charge and dis-charge curves are crap, as is the capacity.
Health department will , give them a zero just because of one person
She supposed to have gloves on when touching products
What an awesome channel!! You've got my subscription for learning more on battery technology
Thanks! Appreciate it
Excellent Video
Thanks!
yOUR VIDEOS ARE VERY VERY GOOD.
Thanks!
@@BillyWu anytime
Very good content. Thx a lot!!
Thanks! Glad it was helpful
Excellent presentation Dr. Wu
Thanks!
This (paired with the first two videos) is an absolutely incredible introduction. I feel like i understand the heat treatment process 10000x better, wow.
Thanks. Glad to hear these videos have been helpful
Can you help me understand the time-temperature-transformation diagram and the terms related to it? Please please please
Sure. Here's another video where I discuss different ways of strengthening metals, including heat treatment and TTT diagrams ua-cam.com/video/7lM-Y4XndsE/v-deo.html
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
Very nice
Thanks
good job to whoever named "cast iron"
🙂
Prof : can I get your email please.. I have project in annealing
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.
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
This was great, I learned a lot. Thanks Prof. Wu!
Thanks. Glad to hear it was useful
Great video....thx!
Thanks. Glad to hear it was useful
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.
this really helped...
Glad to hear it was helpful
Can you please share ppt?
Thanks for informing me of other performances. I can add
Nice one
Thanks