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Samsung Develops 'Graphene Ball' Battery With 5x Faster Charging Speed (digitaltrends.com)
Heart44 writes: A number of outlets are reporting a Samsung laboratory breakthrough allowing smaller and faster charging lithium-ion batteries using three-dimensional graphene. Digital Trends reports: "Scientists created a 'graphene ball' coating for use inside a regular li-ion cell, which has the effect of increasing the overall capacity by up to 45 percent and speeding up charging by five times. If your phone charges up in 90 minutes now, that number will tumble to just 18 minutes if the cell inside has been given a graphene ball boost. What's more, this doesn't seem to affect the cell's lifespan, with the team claiming that after 500 cycles, the enhanced battery still had a 78 percent charge retention. The graphene coating improves the stability and conductivity of the battery's cathode and electrode, so it's able to take the rigors of fast charging with fewer downsides." The technical paper describing how the graphene ball works and how it's produced is published in the journal Nature.
Buckyballs are much smaller. These siloxane lumps are 10-20x larger than a typical buckyball. You'll probably find that the vapour deposition will result in several sheets of graphene depositing at different points and growing together into a not-quite-perfect coating. Not enough to break the functionality, but enough to disqualify it from the comparatively geometrically pure buckyballs, which have mind-boggling symmetry.
bought up and shelved by oil companies ?
I'm charging my S8+ ~1.5 a day. 500 charges means that after just 1 year the battery is at 78% of capacity, What happens after 1.5 years?
Even for those who charge only once a day, 500 charges is ~1.5 years, which is less than the common 2-year lifespan of the phone.
Increasing the battery density probably won't help either, as manufacturers will again make thinner phones instead of increasing capacity.
They have come to the market. Why do you think that we have personal computers in our pockets that allow for a nearly full day of computing, that are reliable enough for product makers to directly solder them to the electronic devices, and normally last past the expected device lifetime.
The problem is perception.
1. Batteries are boring. they are not flashy, they don't make your apps directly run faster. They just make the cool things other technology uses last longer.
2. Technology is using more power. My Phone, has an Ultra High resolution display, Gigs of ram, a fast processor comparable to some modern laptops and desktops. Sensors and Gyroscopes... and this is a normal consumer devices, Compared to 10 years ago, where we had a flip phone with a 100x100 pixel display (color is optional) And it made phone calls and texts, and a cheap camera, where most people had a separate camera. All this stuff uses more power. So device makers are sticking to a 20 hours battery under normal use. If the battery can last longer, then they put more stuff and speed to the device.
3. We forget the problems of the past. We needed user replaceable batteries in the past, because they would last an average of about a year. Meaning we needed to replace them after a while while our device is still relatively new.
4. We use devices more on battery. Old cell phone usage was just to make calls and texting, but for the most part the device is in our pocket, or charging. Today we as a culture are in front of little glowing squares. We are using these devices all day. Even for laptops, when I have a few hours of meeting I don't bother bringing my power cord, because I know my laptop will last the duration. Back 10 years ago, you always brought your power plug for your laptop, because the device may last 3 hours that is with the screen dimmed all the way down and no apps running. Today I can use my more powerful laptop for the 3 hours quite normally, granted if I go overboard it can vary.
5. Each breakthrough takes years to get out, make sure it works and is safe and reliable, and a fit for such devices. So if it takes 5 years to get to the market. the 3x improvement is the 3x improvement from 5 years ago, and with the other improvements going on when it gets released it is only 1.25x faster. Battery technology doesn't follow Moore's Law it is more linear. So we don't get the same awe effect that we do when we see new technology.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.
I have some ni-cads batteries here you can try out against a modern battery and then you can tell me they haven't gotten any better.