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文章编号: 16726987(2018)04004706; DOI: 10.16351/j.16726987.2018.04.007
张弘a, 李镇江a,b*
(青岛科技大学 a.机电工程学院;b.中德科技学院,山东 青岛266061)
摘要: 以钼酸钠和硫代乙酰胺为原料,水为溶剂,采用水热法制备出具有优异电化学性能的花瓣状MoS2纳米结构。研究了制备过程中反应温度、时间对产物形貌及电化学性能的影响。利用X射线衍射(XRD)、扫描电子显微镜(SEM)对产物的微观结构和形貌进行了表征,并对其电化学性能及反应过程机理进行了研究。结果表明:在水热温度为200 ℃,反应时间为28 h条件下,所制备产物的结晶性最好,组成花瓣状的片层结构堆垛最为有序;以该花瓣状MoS2作为铝离子电池正极材料,在充放电电流密度为10 mA·g-1时,首次放电容量达到1278 mA·h·g-1,循环80圈后,其放电容量依然保持在444 mA·h·g-1,上述结果表明,所制备产物具有优异的电化学性能和良好的循环稳定性。
关键词: 水热法; 花瓣状MoS2; 铝离子电池; 循环稳定性
中图分类号: O 646文献标志码: A
引用格式: 张弘, 李镇江. 新型铝离子电池正极材料MoS2的制备及其电化学性能\[J\]. 青岛科技大学学报(自然科学版), 2018, 39(4): 4752.
ZHANG Hong, LI Zhenjiang. Synthesis and electrochemical properties of MoS2 as the new cathode of aluminum ion battery\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2018, 39(4): 4752.
Synthesis and Electrochemical Properties of MoS2 as the
New Cathode of Aluminum Ion Battery
ZHANG Honga, LI Zhenjianga,b
(a.College of Electromechanical Engineering; b.College of SinoGerman Science and Technology,
Qingdao University of Science and Technology, Qingdao 266061, China)
Abstract: In this paper, petalslike structured MoS2 with excellent electrochemical performance were synthesized by hydrothermal method using sodium molybdate and thioacetamide as a raw materials. The effect of different reaction conditions such as temperature, reaction time on the product morphology and the electrochemical properties were studied. The microstructure and morphology of the MoS2 were characterized by Xray diffraction (XRD), scanning electron microscopy (SEM), and the electrochemistry property and mechanism was studied. The result indicated that samples with the best crystallinity and stacking ordering could be synthesized at 200 ℃ for 28 h. The MoS2 as the new cathode of aluminum battery delivers an initial high discharge capacity of 1278 mA·h·g-1 at a current 10 mA·g-1 and the discharge capacity remains 444 mA·h·g-1 after 80 cycles, which showing good capacity and cycling performance.
Key words: hydrothermal method; petalslike structure MoS2; aluminum battery; cycle stability
收稿日期: 20170602
基金项目: 国家自然科学基金项目(50972063,51572137).
作者简介: 张弘(1991—),男,硕士研究生.*通信联系人.