反应温度对低共熔溶剂合成NaTi_(2)(PO_(4))_(3)/C的性能影响  

Influence of reaction temperature on structure and performance of NaTi_(2)(PO_(4))_(3)/C synthesized in a deep eutectic solvent

作　　者：蒋芳 张亚男 龙云飞[1] 苏静[1,3,4] 文衍宣 JIANG Fang;ZHANG Ya-nan;LONG Yun-fei;SU Jing;WEN Yan-xuan(School of Chemistry of and Chemical Engineering,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials,Nanning 530004,China;Guangxi Novel Battery Materials Research Center of Engineering Technology,Nanning 530004,China;Guangxi College Key Laboratory of Novel Energy Materials and Related Technology,Nanning 530004,China)

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西有色金属及特色材料加工重点实验室,广西南宁530004 [3]广西新型电池材料工程技术研究中心,广西南宁530004 [4]广西高校新能源材料及相关技术重点实验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2021年第6期1628-1634,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51564002,51864005);广西自然科学基金资助项目(2018GXNSFDA281014)。

摘　　要：在氯化胆碱/三乙醇胺低共熔溶剂中制备钠离子电池负极材料NaTi_(2)(PO_(4))_(3)/C,并用X射线衍射、扫描电镜、循环伏安、交流阻抗和恒电流充放电技术研究反应温度对所得NaTi_(2)(PO_(4))_(3)/C的结构、形貌以及电化学性能的影响。结果表明:不同反应温度制备的材料均是单相介孔NaTi_(2)(PO_(4))_(3)/C,合成材料的放电比容量随着反应温度的增大先增大后减小。其中140℃合成的NaTi_(2)(PO_(4))_(3)/C在10 C倍率下循环500圈后放电比容量为116 mAh/g,具有较好的倍率性能和循环稳定性。NaTi_(2)(PO_(4))_(3)/C,an anode material of sodium ion battery,was prepared in the chloride/triethanolamine-based deep eutectic solvent.The effects of reaction temperature on the structure and performance of the prepared NaTi_(2)(PO_(4))_(3)/C were investigated by X-ray diffraction,scanning electron microscopy and electrochemical tests.The results indicate that the sample prepared at different reaction temperature are single phase NaTi_(2)(PO_(4))_(3)/C.The capacity of as-synthesized NaTi_(2)(PO_(4))_(3)/C first increases and then decreases with the rise of the reaction temperature.The sample prepared at 140℃delivers a capacity of 116 mAh/g at 10 C after 500 cycles,showing good cycling performance and high magnification performance.

关 键 词：钠离子电池 负极材料 NaTi_(2)(PO_(4))_(3)/C 

分 类 号：TM912[电气工程—电力电子与电力传动]