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首页> 外文期刊>Energy Technology: Generation,Conversion,Storage,Distribution >Influence of Sulfur-Modified Vanadium Pentoxide by Solid Phase Sintering Method on Electrochemical Performance of Cathode Materials for Lithium-Ion Batteries
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Influence of Sulfur-Modified Vanadium Pentoxide by Solid Phase Sintering Method on Electrochemical Performance of Cathode Materials for Lithium-Ion Batteries

机译：固相烧结法对锂离子电池阴极材料电化学性能的固相烧结法对硫改性钒五氧化二钒的影响

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摘要

Vanadium pentoxide (V2O5) is a common cathode material for lithium-ion batteries, and its chemical composition and structure can seriously affect the electrochemical performance of the batteries. V2O5 is modified by sulfur with solid phase sintering method, and its physical property and electrochemical performance are studied. Physical characterization shows that after sulfur modification, V2O5 changes to low-valence vanadium oxide (V6O13 or VO2), and some free sulfur is observed inside the vanadium oxide molecule in high proportion. Electrochemical test results show that when the proportion of sulfur is 10%, vanadium oxide cathode has the lowest charge resistance and the most excellent reversibility. Specific capacity of 188.87, 146.60, 130.42, and 110.86 mAh g(-1) is achieved at 100, 200, 300, and 500 mA g(-1) current density. After 300 cycles, its electrochemical performance remains stable and has the highest specific capacity.
机译：钒五氧化钒（V2O5）是锂离子电池的常见阴极材料，其化学组成和结构可以严重影响电池的电化学性能。 V2O5通过具有固相烧结法的硫进行改性，研究其物理性质和电化学性能。 物理表征表明，在硫修饰后，V2O5对低价氧化钒（V6O13或VO2）的变化，并且在氧化钒分子中观察到高比例的一些游离硫。 电化学测试结果表明，当硫比例为10％时，氧化钒阴极具有最低的电荷抗性和最优异的可逆性。 在100,200,300和500mA G（-1）电流密度下，实现了188.87,146.60,130.42和110.86mAhg（-1）的特定容量。 300次循环后，其电化学性能保持稳定并具有最高的特定容量。

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