US researchers use seaweed extract to improve the capacity of lithium battery

According to foreign media reports, researchers at Clemson University's School of technology in Georgia recently announced the discovery of a way to make silicon positive lithium batteries This method takes advantage of a substance from seaweed, which has been used as a binder, gel or food additive Compared with the traditional lithium battery, the capacity of the lithium battery with silicon as cathode material will be increased by more than 10 times This means that the capacity of the lithium battery containing silicon will reach 1000 kwh per kilogram This will greatly increase the range of electric vehicles But there is also a problem: the cathode material of lithium battery absorbs lithium ion in the process of charging and discharging, and then releases lithium ion Because the silicon structure is not easy to expand and contract repeatedly, the silicon structure is easy to be destroyed in this process This leads to the limitation of silicon cathode materials The newly discovered substance is alginate, which can protect the silicon positive electrode At the same time, the addition of this substance can make the capacity of lithium battery 8 times higher than the traditional capacity This is one of the many attempts made by research institutions around the world in the research and development of silicon cathode materials Researchers at Stanford University had previously proposed a report on the improvement of battery capacity by a nano silicon material a few years ago.