【摘要】 镁离子电池发展到现在,能够适合其多次充放电的稳定结构液相电解质至今没突破,使镁离子电池的发展应用严重受限^[1-2]。如有优良的固体电解质^[2-3]取代受限的液相电解质,镁离子电池的发展将上升一个维度。本实验的研究是通过溶胶-凝胶法合成镁离子电池固体电解质MgZrNi_1.5（PO₄）₃,用Ni²⁺取代原有固体电解质MgZrNi_1.5（PO₄）₃中一部分Zr⁴⁺,通过加入镍离子加大原有固体电解质的电导率,同时能加大电解质原有容量。通过实验证明,经过溶胶-凝胶法并进行离子取代,制备出的镁离子电池固体电解质电导率较原有固体电解质有较大提高,810℃温度下合成后的样品,电导率达到6.2×10^-6 S/cm,比未经离子取代的固体电解质Mg_0.5Zr₂（PO₄）₃^[2],电导率提高明显,为今后镁离子电池固体电解质的发展提供了重要参考。更多还原

【Abstract】 The stable structure liquid-phase electrolyte which is suitable for multiple charge and discharge has not been found so far. The development and application of magnesium ion battery are seriously limited^[1-2]. If there is a good solid electrolyte^[2-3] to replace the limited liquid electrolyte, the development of magnesium ion battery will rise one dimension. In this study, the solid electrolyte MgZrNi_1.5（PO₄）₃ of magnesium ion battery was synthesized by sol-gel method and replacing part of Zr⁴⁺ in MgZrNi_1.5（PO₄）₃ with Ni²⁺. By adding nickel ion, the conductivity and capacity of the original solid electrolyte could be increased. It was proved by experiments that after the sol-gel method and ion substitution were used, the conductivity of the prepared solid electrolyte was higher than that of the original solid electrolyte. The conductivity of the synthesized sample was 6.2×10^-6 S/cm at 810 ℃, and compared with the solid electrolyte Mg_0.5Zr₂（PO₄）₃, the conductivity of MgZrNi_1.5（PO₄）₃ was obviously increased. It provided an important reference for the development of solid electrolyte of magnesium ion battery in the future.更多还原