Why It's So Hard To Make Better Batteries: Crash Course Engineering #32
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Date: 2022-04-04
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Comments and reviews: 10
Sung-yul
In Li ion batteries, as the amount of charge stored per volume increase, the amount of cycle life decreases. Dandrif like Li growing was a major problem in the pastwhen Li metal was used as anodes. Carbon based anodes are used and the batteries are designed so that the capacity of anode is larger than cathodes these days to prevent dandrifs. However, it takes 6 carbon atoms to store 1 Li ion so the capacity is limited. When other material that can store more Li is used, the material will go through more volume change compared to carbon anodes. This volume change will damage the structual integrety of the anode. The amount of charge stored per one charging will increase but the battery will go through a lot fewer charges. Thus, it is almost impossible.
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In Li ion batteries, as the amount of charge stored per volume increase, the amount of cycle life decreases. Dandrif like Li growing was a major problem in the pastwhen Li metal was used as anodes. Carbon based anodes are used and the batteries are designed so that the capacity of anode is larger than cathodes these days to prevent dandrifs. However, it takes 6 carbon atoms to store 1 Li ion so the capacity is limited. When other material that can store more Li is used, the material will go through more volume change compared to carbon anodes. This volume change will damage the structual integrety of the anode. The amount of charge stored per one charging will increase but the battery will go through a lot fewer charges. Thus, it is almost impossible.
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RogerWazup007
Regarding modern smartphones, I've heard conflicting advice on how to maximize battery life including not letting the battery get below a certain percentage (such as 40%) and the number of charges being what matters most, meaning that getting the most out of each charge is ideal. Then there's whether or not to keep the cable in while it's fully charged, letting the battery drain to 0% and then fully charging once a month or so (this might be for older kinds of batteries, and most recently leaving apps open instead of closing them. What's the best way to make batteries last the longest in terms of months and years?
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Regarding modern smartphones, I've heard conflicting advice on how to maximize battery life including not letting the battery get below a certain percentage (such as 40%) and the number of charges being what matters most, meaning that getting the most out of each charge is ideal. Then there's whether or not to keep the cable in while it's fully charged, letting the battery drain to 0% and then fully charging once a month or so (this might be for older kinds of batteries, and most recently leaving apps open instead of closing them. What's the best way to make batteries last the longest in terms of months and years?
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boyceps
My dad used to have a battery charger that would recharge alkaline batteries. I remember 24 hours to recharge but don't overcharge them. Also, turn off (or put to sleep) what you aren't using. Bluetooth, rarely used applications, physical location tracking, etc. Turn the brightness down, use a plain black (or very dark) wallpaper.
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My dad used to have a battery charger that would recharge alkaline batteries. I remember 24 hours to recharge but don't overcharge them. Also, turn off (or put to sleep) what you aren't using. Bluetooth, rarely used applications, physical location tracking, etc. Turn the brightness down, use a plain black (or very dark) wallpaper.
reply
education
So. batteries are going to be obsolete in the near future according to the disadvantages of batteries described in this video, i mean think about limited storage, sizes, and limited usage.
I wonder will there ever be a truly wireless battery charger without the need to charge it into a wall outlet for home and travel use?
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So. batteries are going to be obsolete in the near future according to the disadvantages of batteries described in this video, i mean think about limited storage, sizes, and limited usage.
I wonder will there ever be a truly wireless battery charger without the need to charge it into a wall outlet for home and travel use?
reply
oreubens
2: 20 --. where it (the battery) can no longer power the current to the circuit. I. o. w. the battery is out of power-.
eek. batteries store -ENERGY-. So -the battery is out of energy-.
2: 25 -the amount of power you can cram into one battery. -
no no no. the amount of energy you can cram into one battery.
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2: 20 --. where it (the battery) can no longer power the current to the circuit. I. o. w. the battery is out of power-.
eek. batteries store -ENERGY-. So -the battery is out of energy-.
2: 25 -the amount of power you can cram into one battery. -
no no no. the amount of energy you can cram into one battery.
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00
Get information but just one thing, take a breath! slam slam slam there's no time to think between sentences to process the information that's a problem with a lot of videos up there now it makes it not very enjoyable to watch I had to stop halfway through it was driving me crazy -
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Get information but just one thing, take a breath! slam slam slam there's no time to think between sentences to process the information that's a problem with a lot of videos up there now it makes it not very enjoyable to watch I had to stop halfway through it was driving me crazy -
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Viv
if you asked a mechanical engineer they might say, voltages in batteries are like the amount of water behind a dam and batteries wearing out over time is like when a spring can no longer spring back and forth bc changes have occurred in the metal - it's worn out
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if you asked a mechanical engineer they might say, voltages in batteries are like the amount of water behind a dam and batteries wearing out over time is like when a spring can no longer spring back and forth bc changes have occurred in the metal - it's worn out
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Andrew
I'd actually be willing to have a bigger battery in most of the circumstances I use one. 2-3mms on my phone for even an extra 30 minutes isn't a huge trade off for me. Is there a reason outside of the demand for smaller things that we can't make them bigger?
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I'd actually be willing to have a bigger battery in most of the circumstances I use one. 2-3mms on my phone for even an extra 30 minutes isn't a huge trade off for me. Is there a reason outside of the demand for smaller things that we can't make them bigger?
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Christian
chemical batteries suck. Not only discharge they quickly, but they also degrade due to dendration. They have of course greatly advanced over the last few years and there are some interesting new approaches on improving on the underlying tech
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chemical batteries suck. Not only discharge they quickly, but they also degrade due to dendration. They have of course greatly advanced over the last few years and there are some interesting new approaches on improving on the underlying tech
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Schoening91
Are all the electric cars not gonna ruin the environment even further than oil when they break in about 10 years time? What are we gonna do, just bury them in some third world country and pad ourselves on the back?
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Are all the electric cars not gonna ruin the environment even further than oil when they break in about 10 years time? What are we gonna do, just bury them in some third world country and pad ourselves on the back?
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