高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (3): 584.

• 研究论文 • 上一篇    下一篇

海胆状硫化镍空心球的制备及电化学性能研究

郎雷鸣1,2,徐正1   

  1. 1. 南京大学配位化学国家重点实验室, 微结构国家实验室, 南京 210093;
    2. 南京晓庄学院生物化工与环境工程学院, 南京 211171
  • 收稿日期:2010-10-22 修回日期:2011-01-04 出版日期:2011-03-10 发布日期:2011-02-23
  • 通讯作者: 徐正 E-mail:zhengxu@nju.edu.cn
  • 基金资助:

    国家“九七三”计划项目(批准号: 2007CB936302)资助.

Synthesis of Urchin-like Nickel Sulfide Hollow Spheres and Their Electrochemical Performance

LANG Lei-Ming1,2, XU Zheng1*   

  1. 1. State Key Laboratory of Coordination Chemistry and Nanjing National Laboratory of Microstructure, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;
    2. Biochemical and Environmental Engineering College, Nanjing Xiaozhuang University, Nanjing 211171, China
  • Received:2010-10-22 Revised:2011-01-04 Online:2011-03-10 Published:2011-02-23
  • Contact: XU Zheng E-mail:zhengxu@nju.edu.cn
  • Supported by:

    国家“九七三”计划项目(批准号: 2007CB936302)资助.

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被引次数

8

摘要： 以乙二醇为溶剂，硫代乙酰胺为硫源，采取简单的溶剂热法成功合成了由纳米棒组成的海胆状硫化镍空心球，扫描电镜图片清楚地揭示了海胆状空心结构，XRD测试结果表明产品中存在α和β两种相结构，但主要组分为β-NiS. 跟踪产物随时间的变化，研究了海胆状空心球的形成过程. 先形成实心的海胆状结构，进一步熟化导致空心结构的形成. 作为锂离子电池的阴极材料，测定了海胆状硫化镍空心球的电化学性能，首次放电容量超过900mAh g-1，高于文献报道的理论容量，循环五十次后，稳定在约200 mAh g-1.  

关键词: 海胆状, 硫化镍, 空心球, 电化学

Abstract: Urchin-like nickel sulfide hollow spheres composed of nanorods were synthesized via a solvthermal method using thioacetamide as sulfur source and ethylene glycol as solvent. The result of XRD indicated that there were two kinds of phase structure including α and β in the NiS products and the major product was β-NiS. The formation process of urchin-like nickel sulfide hollow spheres was investigated by monitoring the morphology variation of the product with reaction time. The results showed that urchin-like solid microspheres were formed firstly, then hollow structure were obtained via further “Ostwald ripening” process. Charge-Discharge and cyclic performance of the products were determined as an cathode of lithium-ion batteries. The first discharge-charge capacity was 900 mAhg-1, and 200mAhg-1 was still remained after 50 cycles.

Key words: urchin-like, nickel sulfide, hollow spheres, electrochemical

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