Cuttable flexible lithium battery, the battery will not catch fire when cutting and can work normally

The researchers planned a flexible lithium-ion battery that can work normally even under extreme conditions such as being cut, immersed, or impacted by simulated ballistics, and now, the battery will not catch fire. The electrolyte of lithium-ion batteries is flammable, so it is easy to cause catastrophic fires and explosions. Because of the danger, the most representative incident is the Samsung Galaxy Note7 mobile phone, which is forbidden to be used on airplanes. The army also banned sailors from using electronic cigarettes on ships and submarines to prevent possible dangers. Recently, in the 'Chemical Communications' magazine, a research group led by Konstantinos Gerasopoulos of the APL Research and Exploration Development Department announced its findings: a new type of water-in-salt (WiS) and water-in-bisalt (WiBS) electrolytes, When combined with the polymer matrix, it can reduce water activity, increase the energy of the battery, extend its life cycle, and eliminate the flammable, toxic, and highly active solvents in lithium-ion batteries. The researchers showed that the electrolyte is a safe and strong substitute. As such batteries have gradually become the first choice for energy storage in applications such as portable electronic devices, electric cars, and grid storage, the ability to improve their safety will mark a serious change in the production and use of lithium-ion batteries. Gerasopoulos, senior research scientist and chief researcher of APL, stated: 'From mobile phones to cars, lithium-ion batteries have become common products in daily life, and continuing to improve their safety is essential to further promote energy storage technology. Since the commercialization of lithium-ion batteries in the early 1990s, their form factors have not changed much. We still use the same cylindrical or rhombic battery cells, with the liquid electrolyte and the required sealing packaging in between. This shape has a great connection. 'Scientists have proved that the UV curing process and the integration of WiBS in the polymer can improve the retention of free water, and the retention will be coordinated by the polymer, which can then improve its electrochemical stability. The researchers stated:'We have demonstrated for the first time that the low-cost anode nano-scale lithium titanate (Li4Ti5O12, LTO) widely used in the market can be used in water-based polymer lithium-ion batteries and can be reliably cycled 100 times. In the new study, the team overcomes the constraints of liquid WiBS electrolyte. Because of the presence of water, liquid WiBS electrolyte is inherently safe, but its energy is limited and incompatible with most commercial anode materials. Researchers have developed'stable, WiBS-based water-based gel polymer electrolytes (GPEs). In the presence of WiBS, the researchers used UV mediation to polymerize water-soluble acrylates and then make this electrolyte. 'Gerasopoulos said:'The first generation of flexible batteries is not as stable in size as the batteries we are making now. The UV curable polymer we developed is an independent, high mechanical strength film, similar to contact lenses. This type of battery can work continuously for several days even if it is completely exposed to the air. And you can burn them, cut them, and maybe put pressure on them in other ways, and they can still work. 'APL Science Project Director Jeff Maranchi said: 'Our team is constantly improving the safety and performance of flexible lithium-ion batteries, and we expect to transform this new research into a prototype within a year. 'Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: The charger manufacturer will show you the -△V judgment mechanism of the smart Ni-MH battery charger