The research progress of waste lithium ion battery metal recycling

Source: 2020 - 03 - 28 now hits: time waste lithium ion battery research progress of metal recycling power and environment is the human need to face two major problems in the 21st century. In recent years, lithium ion batteries due to its light weight, small volume, low self-discharge, no recall effect, wide working temperature range, fast charge and discharge, and the advantages of long service life, environmental protection has been widely used. Whittingham using li - in the first place Tis system made the first piece of lithium batteries, and commercialization in 1990. From then to now has more than 40 years, has made great progress. According to statistics, 1-2017 In October, 89 cumulative production of lithium ion battery in China. 900 million, the cumulative increase of 34. 6%. Internationally, lithium ion battery application in the field of aerospace power has entered the stage of engineering application. Some companies around the world and military sectors for lithium ion battery application in the field of aerospace has carried on the research and development, such as NASA, the American eagle picher battery company, France SAFT, JAXA, Japan, etc. With the wide use of lithium ion batteries, the amount of waste batteries are also growing. By 2020 or so, our country electric ( Including the plug-in) Passenger cars and hybrid electric vehicle power battery total scrap amount will be in 12 - 170000 tonnes. Although referred to as' green battery, lithium-ion batteries do not contain mercury, lead and other harmful elements, but its positive data and the electrolyte solution will cause great pollution to the environment and waste of resources. As a result, summarizes the present situation of the waste lithium battery recycling technology, on the basis of summarizing the development direction of waste lithium ion battery recycling technology has important practical significance. Lithium ion battery of the main part of the main components of lithium ion battery shell, electrolyte, the positive data, negative data, adhesive, aluminum foil and copper foil. In the meantime, the mass fraction of Co, Li, Ni were 5% ~ 15%, 2% ~ 7%, 0. 5% ~ 2%, and metallic elements such as Al, Cu, Fe. Principal component values of respect, the positive and negative data accounted for 33% and 10% respectively, and electrolyte membrane separation accounted for 12% and 30%. From waste lithium ion battery recycling is one of the first metal Co and Li, they mainly assemble in anode cobalt - data Lithium membranes. Especially for cobalt resources relative shortage in China, development and application of cobalt is difficult. However, the mass fraction of cobalt in the lithium ion battery accounted for about 15%, this is 850 times of cobalt ore. At present, with the LiCoO2 lithium ion battery anode data are widely used, containing cobalt acid lithium, lithium, organic carbonate carbon data, copper, aluminum and other chemicals