The effect of LiBF4 concentration on the discharge and stability of LiMn2O4 half cell Li ion batteries |
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| Affiliation: | 1. Department of Chemistry, Sciences & Arts Faculty, Sakarya University, 54187 Sakarya, Turkey;2. Department of Metallurgy and Material Engineering, Engineering Faculty, Sakarya University, 54187 Sakarya, Turkey;1. Department of Physics, Middle East Technical University, 06800 Ankara, Turkey;2. Virtual International Scientific Research Centre, Baku State University, 1148 Baku, Azerbaijan;1. School of Microelectronics and Solid State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China;2. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, PR China;1. Department of Chemistry, Sciences & Arts Faculty, Sakarya University, 54187 Sakarya, Turkey;2. Department of Metallurgy and Material Engineering, Engineering Faculty, Sakarya University, 54187, Sakarya, Turkey;1. Environment Research Institute, Shandong University, Shanda South Road 27, 250100 Shandong, China;2. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark;1. Clean Nano Energy Center, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, China;2. Institute of Solid State Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, 1040, Vienna, Austria |
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| Abstract: | Electrolytes were prepared with different LiBF4 salt concentrations in the ratio of 2:1 (w/w) Ethylene Carbonate (EC): Dimethyl Carbonate (DMC) solvents. Different LiBF4 concentrations were used in the electrolytes to assemble half-cells containing metallic Li anode and nanostructured LiMn2O4 cathode material. To investigate the effect of LiBF4 salt concentration on the electrochemical performance of nanostructured LiMn2O4 cathode material, electrochemical tests were performed at room temperature. For LiBF4–EC–DMC based electrolytes, the optimum LiBF4 salt concentration was found and results showed that higher salt concentration provides higher electrochemical capacity for the bare nanostructured LiMn2O4 cathode materials but did not result in preventing capacity fade due to electrode degradation. |
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| Keywords: | Li-ion batteries Electrolyte composition Capacity Stability |
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