Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-10-29 Hits: Popular:AG11 battery
Revolutionary breakthrough in CR1620 battery: Graphene "foil" debuts
Lithium-ion batteries, as the name implies, work by moving lithium atoms between the battery's two electrodes. So increasing the battery's capacity lies primarily in finding ways to put more lithium into the electrodes. However, these researchers' tireless efforts have encountered major problems. If lithium is the majority of the electrode material, moving it out can cause the electrode to shrink. Moving it back in can cause lithium to be deposited in the wrong place, shorting the battery. A research team at Stanford University has figured out how to wrap large amounts of lithium in graphene. The resulting structure keeps the lithium in place as it leaves, allowing it to flow back to where it started. Tests of the resulting material (which they call lithium-graphene foil) show that it can give batteries nearly twice the energy density of existing CR1620 battery. An obvious solution to increasing the amount of lithium in the electrode is to simply use lithium metal itself. But this is not the simplest thing to do. Lithium metal is less reactive than other members of the periodic table (sodium and potassium), but it still reacts with air, water, and many electrolyte materials. In addition, when lithium leaves the electrode and returns, there is no way to control where it reforms into metal. After a few charge/discharge cycles, the lithium electrode begins to collapse in layers, eventually cycling enough to short-circuit the battery. To better control how the lithium behaves at the electrode, Stanford has investigated the use of some lithium-rich alloys. For example, lithium forms a complex with silicon, which typically has more than four lithium atoms for every atom of silicon. When the lithium leaves the electrode, the silicon stays behind, providing a structure to bind the lithium when it returns on the other half of the charge/discharge cycle. This solves the lithium metal problem, but it creates a new one: The silicon that stays behind when the lithium runs to the other electrode simply doesn't take up volume when the same electrode is filled with lithium-silicon mixture. It turns out that the electrode expands and contracts during the charge and discharge cycles, putting the battery under physical stress. (Note that the lithium metal electrode disappears completely, which could lead to greater mechanical stress) This seems to put us in a dilemma. Limiting the expansion and contraction of the electrode material seems to require limiting the amount of lithium that moves in and out of the electrode material. This, of course, means limiting the battery's energy density. In the new work, the researchers combined the earlier lithium-silicon work with graphene. Graphene is a one-atom-thick sheet of carbon atoms linked together, and it has many properties that are good for batteries. Powerful enough to easily transfer electricity from lithium as the battery charges and discharges. It's also very thin, which means packing lots of graphene molecules into an electrode doesn't take up a lot of space. Graphene is mechanically strong for this job. To make their electrode material, the team made nanoparticles of a lithium-silicon material. They then mixed them with graphene sheets in an eight-to-one ratio. A small amount of a plastic precursor was added, and the entire mixture was spread out on a block of plastic. Once spread, the polymer precursor creates a polymer film on top of the graphene nanoparticle mixture. This can be peeled off. The resulting material, which they call foil, contains a large number of nanoparticles surrounded by typically three to five layers of graphene. Depending on how thick you make the foil, there can be several layers of nanoparticle clusters, each separated by graphene. The graphene sheets make the material fairly strong, as you can fold and unfold it and still use it as a battery electrode. They also help keep air from reacting with the lithium. Even after two weeks of exposure to air, the foil retained about 95% of its ability to function as an electrode. Lower the fraction of graphene used in the starting mixture, and the electrode loses nearly half its capacity in the same two weeks. It works really well as an electrode. The nanoparticles do shrink when the lithium leaves, but the graphene sheets hold the structure together and keep it from shrinking. Even after 400 charge-discharge cycles, it retained 98% of its original capacity. Perhaps most importantly, when paired with a vanadium oxide cathode, the energy density was just over 500 watt-hours per kilogram. Current lithium-ion batteries are about half that. Normally, it might take a while for research results like this to leave the lab and for companies to start developing them. In this case, however, the head of the research organization already has a startup with batteries on the market. So doing this might take less time for a thorough commercial evaluation. The biggest sticking point might be the cost of graphene. Graphene is still thousands of dollars per kilogram, although it has been coming down, and a lot of people are looking for ways to make it cheaper. If they succeed, then the rest of the components of this electrode are pretty cheap. The manufacturing process seems simple.
Read recommendations:
Precautions for the daily use of lithium batteries
Popular recommendation
801538 battery company
2023-03-2218650 li ion battery
2023-03-223.2v lifepo4 battery cell
2023-03-22551521 lipo battery company
2023-03-22household energy storage battery Factory
2023-03-223.2V 280Ah
2022-10-12Plastic pet muzzle
2022-09-22Lithium-ion battery GN200 60000mAh
2022-08-19402030 180mAh 3.7V
2022-07-01551235 180mAh 3.7V
2022-07-01Ni-MH AAA500mAh 1.2V
2022-07-01501825 180MAH 3.7V
2023-06-12LR20
2022-08-19Home energy storage battery GN-BOX3
2022-09-2718650 800mAh 3.7V
2022-08-1912v 18650 battery pack
2023-06-253.7V Lithium Polymer Battery
2023-06-25Nickel Hydride No. 5 battery
2023-06-2512V23A battery
2023-06-25Column rechargeable battery
2023-06-25401030 battery.Lithium ion batteries
2023-10-24Design specification for lithium batteries
2024-04-18Nickel cobalt lithium manganate (NMC) battery
2022-11-21Why is it full of nickel -metal hydride battery charging.solar energy storage lithium ion battery 15
2023-04-04What are the advantages of lithium batteries?
2024-03-12What is a ternary lithium battery?lifepo4 48v 100ah lithium ion battery
2023-03-11The difference between lithium battery and polymer lithium battery.connector for energy storage batt
2023-04-12Lithium battery market market.502030 polymer battery
2023-07-03Which is safer, lithium battery or nickel metal hydride battery?
2022-11-16Component of power lithium batteries
2023-06-15