摘要
Treated FeS2 samples were prepared by natural FeS2 samples which were ground first, heated in nitrogen and then washed in acid. The levels of impurity elements, primarily present as metallic oxides and sulfides, are higher in the natural FeS2 than those in the treated sample. Scanning electron microscopy shows that the grain sizes of treated FeS2, particles are smaller than those of natural FeS2 particles. The electrochemical performance of Li/treated FeS2 cells is attributed to the smaller grain sizes and higher purity of treated FeS2 particles in comparison to the natural FeS2 sample.
对待的 FeS_2 样品被自然 FeS 准备，首先被扎根，在氮加热了然后在酸洗了的样品。杂质元素，首先现在的同样金属性的氧化物和硫化物的层次，比在对待的样品的那些在自然 FeS_2 是更高的。扫描谷物缩放的电子显微镜学表演对待 FeS，粒子是比自然 FeS_2 粒子的那些小的。Li/treated FeS 的电气化学的表演，房间被归因于更小的谷物尺寸和对待的 FeS 的更高的纯净，与自然 FeS 相比的粒子，样品。
基金
SUPPORTED BY NATIONAL NATURAL SCIENCE FOUNDATION OF CHINA( NO. 20273047)DOCTOR FOUNDATION OF MINISTRY OF EDUCATION ( NO. 20020056045).
