纳米α-MnS的溶剂热合成及电化学性能研究  

Solvothermal synthesis and electrochemical properties of α-MnS nanocrystals

作　　者：王石泉[1] 江雪娅[1] 郑浩[1] 刘红英[1] 冯传启[1] 李国华[2] 

机构地区：[1]湖北大学化学化工学院,湖北武汉430062 [2]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《湖北大学学报（自然科学版）》2011年第2期174-177,共4页Journal of Hubei University：Natural Science

基　　金：浙江工业大学绿色化学合成技术国家重点实验室培育基地开放研究基金资助

摘　　要：以锰粉和硫粉为原料,以乙二胺为溶剂,分别在180℃和160℃下,采用溶剂热法成功地合成了纳米α-MnS（对应分别记为MnS-1和MnS-2）.利用XRD,SEM手段对目标产物MnS-1和MnS-2的结构和形貌进行了表征,结果表明：溶剂热法合成的样品具有单一纯相的面心立方α-MnS结构.溶剂热的温度对样品的形貌有较大的影响：在180℃温度下反应2 d的样品MnS-1呈棒状和片状,棒粗20~30 nm,棒长200~250 nm.在160℃温度下反应5 d的样品MnS-2呈片状,片厚为30~40 nm.并对该材料的电化学性质进行了初步测试,实验发现：合成的纳米α-MnS材料作为电极时,MnS-1和MnS-2的首次放电容量分别为957.2mAh/g和1 033 mAh/g,而且具有一定的循环性能,可望得到应用.MnS nanocrystals were prepared by a solvothermal method using Mn powder and Surfur powder as the reactants.The obtained products were characterized by XRD and SEM,respectively.The results indicated that as-obtained samples（MnS-1 and MnS-2） were rock-salt-type α-MnS.The electrochemical properties of the MnS nanocrystals were also studied.The initial lithiation capacities of the α-MnS nanocrystals were 957.2 mAh/g and 1 033.1 mAh/g,respectively.The MnS-1 sample prepared at 180 ℃ for 2 days exhibited a better cycling performance related to the smaller particle size and narrower particle size distribution,compared with the MnS-2 sample prepared at 160 ℃ for 5 days.The as-prepared α-MnS materials have potential applications as an alternative anode material for lithium-ion batteries in the future through modification or encapsulation.

关 键 词：硫化锰 负极材料 溶剂热法 电化学性能 锂离子电池 

分 类 号：TB383[一般工业技术—材料科学与工程]