镁离子从具有不同含水量的非质子电解质中电化学插入五氧化二钒。
Electrochemical insertion of magnesium ions into V2O5 from aprotic electrolytes with varied water content.
作者信息
Yu Long, Zhang Xiaogang
机构信息
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, People's Republic of China.
出版信息
J Colloid Interface Sci. 2004 Oct 1;278(1):160-5. doi: 10.1016/j.jcis.2004.05.028.
The electrochemical performance of V2O5 has been studied in propylene carbonate (PC)-containing magnesium perchlorate [Mg(ClO4)2] electrolytes in view of their application as positive electrode in the rechargeable magnesium batteries. V2O5 exhibited good properties in hosting magnesium ions and its electrochemical performance depended on the amount of H2O in the electrolytes. The highest first discharge specific capacities of V2O5 electrode was up to 158.6 mAh/g in 1 mol dm(-3) Mg(ClO4)2 + 1.79 mol dm(-3) H2O/PC electrolytes. Electrochemical impedance spectroscopy (EIS) and charging-discharging tests showed that a reasonable amount of H2O in the electrolyte solution facilitated the electrochemical performance of V2O5 electrodes.
鉴于五氧化二钒（V2O5）在可充电镁电池中作为正极的应用，研究了其在含碳酸丙烯酯（PC）的高氯酸镁[Mg(ClO4)2]电解质中的电化学性能。V2O5在容纳镁离子方面表现出良好的性能，其电化学性能取决于电解质中H2O的含量。在1 mol dm(-3) Mg(ClO4)2 + 1.79 mol dm(-3) H2O/PC电解质中，V2O5电极的首次放电比容量最高可达158.6 mAh/g。电化学阻抗谱（EIS）和充放电测试表明，电解液中适量的H2O有利于V2O5电极的电化学性能。
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