Studies on the Effect of Nano-Sized MgO in Magnesium-Ion Conducting Gel Polymer Electrolyte for Rechargeable Magnesium Batteries
Na Wu,
Wei Wang,
Yu Wei,
Taohai Li
Affiliations
Na Wu
Key Laboratory of Inorganic Nanomaterials of Hebei Province, College of Chemistry and Material Science, Hebei Advance Thin Films Laboratory, College of Physical Science and Information Engineering, National Demonstration Center for Experimental Chemistry Education, Hebei Normal University, Shijiazhuang 050024, China
Wei Wang
Key Laboratory of Inorganic Nanomaterials of Hebei Province, College of Chemistry and Material Science, Hebei Advance Thin Films Laboratory, College of Physical Science and Information Engineering, National Demonstration Center for Experimental Chemistry Education, Hebei Normal University, Shijiazhuang 050024, China
Yu Wei
Key Laboratory of Inorganic Nanomaterials of Hebei Province, College of Chemistry and Material Science, Hebei Advance Thin Films Laboratory, College of Physical Science and Information Engineering, National Demonstration Center for Experimental Chemistry Education, Hebei Normal University, Shijiazhuang 050024, China
Taohai Li
Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
Magnesium-ion conducting gel polymer electrolytes (GPEs) with different contents of nano-sized MgO have been prepared and investigated by various electrical and electrochemical techniques. The Mg2+ ion conduction in GPEs was confirmed from cyclic voltammetry and impedance analysis. It was found that doping appropriate nano-sized MgO in the GPE can induce significant improvements in both the electrochemical and the mechanical properties of GPEs. The composite GPE with 7% MgO shows a high ionic conductivity of 4.6 × 10−3 S/cm with electrochemical stability up to 4.7 V versus Mg2+/Mg at room temperature. Furthermore, it is free-standing and flexible with high tensile strength (9.7 ± 0.1 MPa) and elongation at break (91.7 ± 0.2%), further ensuring their potential applications as GPEs for rechargeable Mg batteries.
