In December 2011, according to the German "World News" report, Germany and the United States in the field of high-performance battery research and development, has achieved a number of highly promising research results.
It is reported that the research team of Northwestern University has developed a new type of battery with an energy density that can reach 10 times that of current lithium-ion batteries. The key technology is to develop a new electrode material using carbon-silicon material to achieve fast charging technology. And high density energy storage. However, the ability of the battery to store electrical energy has dropped rapidly, and after 50 times of charging and discharging, it has dropped by 50%.
It is understood that the Berkeley Lawrence National Laboratory developed a battery anode using silicon material, which is 8 times more capable of adsorbing lithium ions than the graphite electrode currently used. However, at present, such an electrode has a large volume expansion during charging, and researchers have developed a polymer having conductivity, which has a high lithium ion adsorption capacity, but has a low expansion ratio and is suitable for practical use conditions of the battery. Clemson University and Georgia Institute of Technology are using seaweed materials to develop new electrode materials with phylogenetic functions.
It is also known that researchers at the University of Münster in Germany have developed a lithium-air battery. The principle is to generate electricity by chemical reaction between lithium and oxygen in the battery. The advantage is that the lithium ion battery is currently replaced by a thin film electrode. The majority of the weight of the carbon-metal grid electrode greatly reduces the weight of the battery. However, in the current battery, oxygen and lithium react with explosive compounds, and safety and reliability need to be improved.
In addition, the Karl Luer Institute of Technology (KIT) in Germany has developed a new type of battery demonstration device. The principle is to use fluorine to react with metal to generate electric energy. The advantages are light weight, long service life, simple production process, and can replace lithium material. .