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锂电池正极材料Ni3S2的球磨制备与电化学特性
Mechanical Synthesis and Electrochemical Properties of Ni3S2 as a Cathode Material for Rechargeable Lithium batteries
【Author】 Xiujian Zhu, Zhaoyin Wen, Shahua Huang, Yangxue Lin, Zhonghua Gu (Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050)
【机构】 中国科学院上海硅酸盐研究所；
【摘要】 本文采用镍粉与硫粉直接快速球磨的方法直接制备了Ni3S2样品并对其进行了x射线衍射与扫描电镜分析。恒电流充放电结果表明该材料作为锂电池正极具有1.4伏的稳定放电平台和454mAh/g的初次放电容量,其循环伏安特征曲线表明Ni3S2与锂离子可逆反应生成Li2S与金属镍时可能需经历3个步骤。
【Abstract】 owder mixtures of metallic nickel and sulfur have been milled in a high-energy planetary ball mill and the formation of Ni3S2 has studied by x-ray diffraction and scanning electron microscopy. The initial discharge capacity of the Ni3S2 positive electrode was 440mAh/g at 1.4V vs. Li/Li+. The cyclic voltammetry curves for the Li/ Ni3S2 cell implied that it is a three-step process when the Ni3S2 transform to Li2S and nickel.
- 【会议录名称】 第十二届中国固态离子学学术会议论文集
- 【会议名称】第十二届中国固态离子学学术会议
- 【会议时间】2004-10
- 【会议地点】中国苏州
- 【分类号】TM911
- 【主办单位】中国硅酸盐学会