Lithium electrodes with and without CO2 treatment: electrochemical behavior and effect on high rate lithium battery performance |
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| Affiliation: | 1. Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;2. Key Laboratory for Advanced Materials and Research Institute of Industrial catalysis, East China University of Science and Technology, Shanghai 200237, China;1. Department of Physiology, University of Veterinary Medicine Hannover, Bischofsholer Damm 15/102, D-30173 Hannover, Germany;2. Clinic for Cattle, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, D-30173 Hannover, Germany;1. Institute for Solid State Physics and Optics, Wigner Research Center for Physics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest, Hungary;2. Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 17, H-1525 Budapest, Hungary;1. Department of Physiology, University of Veterinary Medicine Hannover, Bischofsholer Damm 15/102, 30173 Hannover, Germany;2. Institute of Animal Nutrition, Vetsuisse Faculty Zurich, University of Zurich, 8057 Zurich, Switzerland;3. Center for Applied Biotechnology and Molecular Medicine (CABMM), Zurich, Switzerland;1. Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India;2. Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India |
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| Abstract: | The ionic resistivity and integrity of a solid-electrolyte interphase (SEI) film on a lithium electrode surface was investigated. The performed lithium carbonate film on the surface of the lithium electrode was found to improve the electrode behavior by maintaining a low ionic resistance. In lithium/silver vanadium oxide batteries, voltage delay can be eliminated with the use of a lithium anode pretreated with CO2. An SEI consisting of lithium carbonate appears to be responsible. Unlike the surface film formed from lithium-electrolyte reactions, the lithium carbonate film is relatively strong and can withstand high current density pulses (∼ 20 mA/cm2) without significant damage. An ion exchange mechanism involving the carbonate anion is proposed. |
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