Lithium batteries composed of aluminate polymer complexes as single-ion conductive solid electrolytes |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Taiwan University, Taiwan;2. Department of Chemical Engineering, National Taiwan University, Taiwan;3. Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taiwan;4. Industrial Technology Research Institute, Taiwan;5. Institute of Nuclear Energy Research, Atomic Energy Council, Taiwan;1. Helmholtz-Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, 48149 Münster, Germany;2. Institute of Materials Science and Technology, Technische Universität Berlin, Straße des 17. Juni, 10623 Berlin, Germany;3. Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;4. IEK-9, Forschungszentrum Jülich, 52425 Jülich, Germany;5. RWTH Aachen University, Institute of Physical Chemistry, 52074 Aachen, Germany;6. University of Münster, MEET Battery Research Center, Institute of Physical Chemistry, 48149 Münster, Germany;1. Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China;2. School of Chemical Sciences and College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China;1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Single-ionic conductors, which display lithium ion migration exclusively (without anion migration), have been realized as the polymeric solid electrolytes with lithium orthoaluminate repeating units carrying oligo(oxyethylene) main chain and two side chains of endomethoxy{oligo(oxyethylene)}. The ionic conductivity of the aluminate polymer complexes is about 10−6–10−7 S/cm at room temperature. Thin film lithium secondary batteries were fabricated into 5.5 cm×4.5 cm×0.02–0.03 cm (thick) cells from lithium foil (anode), aluminate polymer complex (electrolyte) and TiS2 (cathode). These batteries show minimal decay of output voltage upon constant current discharging and their capacity of first cycle was about 146 mA h/g of active cathode material. By contrast typical bi-ionic conductor of (aluminate polymer complex+5% LiClO4) hybrid system showed, on the contrary, rapid decay of output voltage, due to polarization. |
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