烧结时间对溶剂热法合成Na2Ti3O7性能的影响  

Effect of sintering time on the performance of Na2Ti3O7

作　　者：王成[1] 陈宗妮 苏静[1,2,3] 文衍宣 WANG Cheng;CHEN Zong-ni;SU Jing;WEN Yan-xuan(School of Chemistry and Chemical Engineering,Guangxi University,Nanning Guangxi 530004,China;Guangxi Novel Battery Materials Research Center of Engineering Technology,Nanning Guangxi 530004 China;Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology,Nanning Guangxi 530004,China)

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西新型电池材料工程技术研究中心,广西南宁530004 [3]广西高校新能源材料及相关技术研究重点实验室,广西南宁530004

出　　处：《电源技术》2019年第12期1942-1945,共4页Chinese Journal of Power Sources

摘　　要：采用氯化胆碱/乙二醇体系溶剂热法成功合成了微/纳米片状Na2Ti3O7负极材料,分析了烧结时间对材料的结构、形貌及电化学性能的影响。随着烧结时间的延长,材料的片状大小逐渐变小,并发生团聚现象。当烧结时间为7 h时,材料的形貌均匀,堆积紧实,且具有较好的电化学性能,以1 C在0.01~2.50 V循环100次后,放电比容量仍保持在122. 1 mAh/g。In this paper,the micro/nano-sheet Na2Ti3O7 anode material was successfully synthesized by solvothermal method using chloride/ethylene glycol system.The influences of sintering time on the structure,morphology and electrochemical performance of the prepared Na2Ti3O7 were studied.As the sintering time prolonged,the sheet size of the material gradually becomes smaller and appears agglomeration.When the sintering time is 7 h,the material has a uniform morphology,compact and good electrochemical performance.After 100 cycles at 1 C in 0.01~2.50 V,the discharge specific capacity of the product is still maintained at 122.1 mAh/g.

关 键 词：钠离子电池 低共熔溶剂 Na2Ti3O7 

分 类 号：TM912[电气工程—电力电子与电力传动]