Đột phá pin Graphene: Giấc mơ sạc siêu tốc 20 phút và rào cản thương mại hóa vật liệu kỳ diệu

hi welcome to another ColdFusion video for decades consumers and Industry alike have been waiting for a better battery one that charges faster and last longer a material called graphene has promised this since its discovery in 2004 as we've seen a few times in this channel there's been many recent steps towards building better batteries but nothing in the form of a product that you can actually buy yet but today we're going to look at something different a real graphene enhanced battery has just hit the market and is available to the public it hints at the first glimpse of a new wave of battery technology let's take a look you are what called cold fusion PV so firstly what is graphene I've talked about it before in a previous episode but for those of you who are new or just can't be bothered watching the previous video use a quick rundown graphene has its origins in graphite the stuff that pencils are made from graphite essentially is a 3d arrangement of carbon atoms when you change the arrangement of atoms to a 2d structure that is flat you end up with graphene graphene was just a theory until 2004 when two scientists at the University of Manchester created the first sample of the substance they were polishing a sample of graphite wood tape and noticed that extremely thin flakes stuck to the tape this inspired them to create the thinnest sample possible and as a result graphene was born the discovery shook the scientific community and in 2010 the two scientists won the Nobel Peace Prize so it may not sound like much but changing the arrangement of atoms from 3d to 2d unlocks incredible physical properties graphene is over 100 times stronger than steel while being incredibly thin at only one atom thick it's so strong that just two atomic layers of the material can be bulletproof it's almost completely transparent extremely light and is the best conductor of electricity and heat known to man these conductivity properties are perfect for electrical applications which brings us back to the battery real graphene a company out of Los Angeles has been researching graphene batteries for years and they've beaten everyone to the punch by bringing an actual graphene battery to market Digital Trends spoke to the CEO Samuel Gong about some of the technologies I'll be including some of his statements in the episode it's the first things first how long does their battery take to charge well with an average phone battery of about three thousand milliamp hours you're looking at around one and a half hours to get from zero to 100% for these graphene enhanced batteries it's 20 minutes to achieve this you need to use a 60 watt charging brick so if you pumped 60 watts into a regular battery it would fry itself the graphene batteries also have a longer lifetime most phone batteries can last around 600 charge cycles the new batteries are rated for 1,500 cycles for the same capacity to top it all off it's safer than regular batteries as well because the cell generates much less heat and runs much cooler Samuel Gong explains graphene is an amazing conductor of heat and electricity lithium doesn't like it when you put a lot of energy in and when you take a lot of energy out we've applied graphene in two different ways we mix it in the solution with lithium plus we've added a composite layer like a sheet of it in the lithium battery it acts like a conductor for the electricity and doesn't generate as much heat so as mentioned you can already buy one of these graphing enhanced batteries it comes in the form of a power bank called the G 100 at 10,000 milliamp hours or three times the average phone capacity it's rated to fully charge from MT in about half an hour and that's with a 100 watt charger a second version the G 100 max will hold twice the capacity the YouTube channel Gary explains has a good video on the initial testing of the G 100 and it is legitimate with a 60 watt charger he managed to charge 10,000 milliamp hours and 50 minutes to highlight that's the equivalent of charging your phone in about 16 minutes and without the dangers of overheating the battery but the most exciting thing is that this is just the start the company real graphene is in talks with many industry partners to provide batteries in fact they've already built them and testing is already underway the company is working on making graphene batteries for everything from smartwatches to battery-powered golf cart as Gong States quote we'll be seeing graphene batteries in actual big brand devices within a year not in every single device but trickling down from the higher end first people think graphene is a thing of the future but I'm here to correct them it's here now we create a battery that can charge super fast is very cool and has a long lifetime in terms of charge cycles he goes on to mention that a lot of companies that claim to be using graphene are actually using graphite is three dimensional cousin therefore they don't have any of the amazing benefits so here's a question how do you make these things making graphene in sheet form is a complex process especially in the amounts native consumer use graphene is massively expensive a few years ago one kilo of graphene cost $300,000 thanks to advancements in the manufacturing process this cost is falling dramatically in 2010 it used to be around $1,000 per cubic centimeter and now is only 1 cent an average sheet goes for around $25 and this is the key to why graphene is finally coming online so tomorrow if a phone manufacturer wanted to use real graphene's battery could the company pull it off CEO Samuel Gong thinks so quote it's easy for us to scale up because we make the graphene we could do this either by using a battery facility owned by a manufacturer or by partnering with another battery firm and scaling isn't the only thing that would be easy even swapping out the battery and the phone manufacturers end would be painless quote adding a graphene sheet doesn't affect the attributes of the cell is only one to five atomic layers thick and this doesn't affect the physical properties at all it's an easy plug-and-play because the cells can be in the same shape and size you get the immediate benefits of graphene so there must be a downside and there is a graphene battery would add about 30% extra cost to the battery component of a phone but I'm sure some consumers wouldn't mind so in my view this is exceptionally encouraging for graphene and this is just the tip of the iceberg only by just incorporating a sheet of graphene into a battery we're seeing such improvements the more graphene that gets introduced the more advantages we'll see but to be perfectly clear even though the overall battery life is increased in terms of lifecycle the actual capacity hasn't increased that much using this method for that we'll have to look to Samsung in the world of batteries the last remaining hurdle is higher capacity per unit volume in this Samsung may be able to help subscribers would remember the episode where we covered Samsung's graphene and fees batteries they have about 30% more energy densities than regular lithium ion batteries so they should last around 30% longer according to the company these batteries should be coming to market next year I've already done a detailed video on the Samsung battery and I'll leave it for you in the description so some final thoughts to finish off just imagine when graphene technology is fully matured it could mean a world of difference not only for mobile phones and laptops but most excitingly electric cars and electric planes not even to mention grid energy storage beyond this it could change material science and engineering as we know it for me this is especially interesting my university thesis was in the realm of materials engineering so I have been following this and will continue to follow this very closely alright that's about it I hope you learned something from that and if you did feel free to subscribe to this channel ok so this has been - Virgo and you've been watching cold fusion and I'll catch you again soon for the next video cheers guys [Music] [Music]