Rechargeable lithium ion batteries (LIB) have been widely used as commercial energy storage systems for portable equipment, electronic devices and high power applications (e.g. electronic vehicles). One issue with the commercialized LIB is that expensive, highly toxic and flammable organic solvents are used in the electrolyte and the fabrication process of electrodes. The toxic organic based solvents increase the production cost and lead to significant safety concerns in the event of a battery overcharge or short circuit. The recent development of “green manufacturing” technology allows manufacturers to replace the organic solvents used in the cathode coating process by aqueous based slurries. In addition, the further transition from organic based LIB system to completely aqueous based lithium ion battery (ARLB) has attracted a lot of attention recently because of its potential to significantly reduce manufacturing cost and eliminate the risks and environmental issues associated with the commercialized, organic based lithium ion batteries. Such new aqueous-based technologies often use basic aqueous solutions with high pH value, which brings concerns on the possible occurrence of aluminum current collector corrosion. The corrosion of aluminum current collector in lithium ion batteries is one of the possible factors that affect the long-term performance and safety of lithium-ion batteries. In this work, the corrosion phenomenon of aluminum current collector in lithium ion batteries that use aqueous-based chemistries is explored experimentally and theoretically. Here, the corrosive aqueous media defined in lithium-ion battery systems includes the aqueous based slurry used in the fabrication of cathode coating, aqueous lithium nitrate electrolyte and aqueous lithium sulfate electrolyte. This research aims to reveal the corrosion behavior, corrosion mechanisms and corrosion kinetics of aluminum in exposure to aqueous environment during the fabrication and service life of aqueous-based lithium-ion battery systems, and shed light on the management of corrosion in the design of cost effective lithium ion batteries. (Abstract shortened by ProQuest.)
|Advisor:||Church, Benjamin C.|
|Commitee:||Abu-Zahra, Nidal, Avdeev, Ilya, Chen, Junhong, Rohatgi, Pradeep|
|School:||The University of Wisconsin - Milwaukee|
|School Location:||United States -- Wisconsin|
|Source:||DAI-B 78/05(E), Dissertation Abstracts International|
|Subjects:||Chemistry, Energy, Materials science|
|Keywords:||Aluminum, Anions, Corrosion, Electrochemistry, Intermetallic, Lithium-ion battery|
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