新型钠离子电池正极材料α-NaV_2O_5纳米带的水热合成及表征
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- 英文论文题名：Synthesis and Characterization of New Na-Ion Batteries Positive Materialsα'-NaV_2O_5 Nano-belt Prepared by Two Kinds of Hydrothermal Method
- 论文作者：刘鹏程 ; 朱孔军 ; 裘进浩 ; 古其林 ; 程蒙
- 英文论文作者：Pengcheng Liu ; Kongjun Zhu ; Jinhao Qiu ; Qilin Gu ; Hongjuan Zheng ; State Key Laboratory of Mechanics and Control of Mechanical Structures ; Nanjing University of Aeronautics and Astronautics
- 年：2016
- 作者机构：南京航空航天大学机械结构力学与控制国家重点实验室;
- 论文关键词：α'-NaV_2O_5 ; 钠离子电池 ; 正极材料 ; 水热法 ; 纳米带
- 英文论文关键词：α'-NaV_2O_5 ; sodium-ion battery ; positive materials ; hydrothermal method ; nano-belt
- 会议召开时间：2016-11-05
- 会议录名称：2016中国硅酸盐学会陶瓷分会学术年会会刊
- 语种：中文
- 分类号：TM912
- 学会代码：EUGQ
- 会议名称：2016中国硅酸盐学会陶瓷分会学术年会
- 会议地点：中国辽宁沈阳
- 主办单位：中国硅酸盐学会陶瓷分会、辽宁省沈阳市法库县政府、辽宁省轻工科学研究院
- 学会名称：中国硅酸盐学会
- 页数：7
- 文件大小：3092k
- 原文格式：O
- 会议级别：全国
摘要
分别采用两种水热合成工艺(两步水热法和一步水热法)成功合成新型钠离子电池正极材料α′-NaV_2O_5纳米带。并且采用X射线衍射(XRD)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)对所合成的α′-NaV_2O_5纳米带进行了表征分析。XRD分析结果表明,水热时间对于NaV_2O_5的合成有着很大的影响,通过控制水热反应时间可以得到纯相的NaV_2O_5粉体;SEM和TEM分析结果表明,无论何种水热工艺所合成的NaV2O5都为单晶纳米带,且具有层状晶体结构;并且提高和描述了α′-NaV_2O_5纳米带oriented attachment自组装生长机制。
New Na-Ion Batteries Positive Materials α′-NaV_2O_5 Nano-belt has been synthesized by two kinds of hydrothermal method(two-pot and one- pot method).The as-obtained products was characterized by X-ray diffraction(XRD),scamming electron microscopy(SEM) and transmission electron microscopy(TEM).The results of XRD indicate that the time of hydrothennal treatment has a important effect on the synthesis of NaV_2O_5,and the pure can be obtained by controlling the time of hydrothermal reaction,the morphology of NaV_2O_5 prepared by both hydrothermal methods is single-crystal nano-belt with a layer crystal structure.And a crystal growth mechanism for α′-NaV_2O_5 Nano-belt,oriented-attachment,is proposed and described in detail.
New Na-Ion Batteries Positive Materials α′-NaV_2O_5 Nano-belt has been synthesized by two kinds of hydrothermal method(two-pot and one- pot method).The as-obtained products was characterized by X-ray diffraction(XRD),scamming electron microscopy(SEM) and transmission electron microscopy(TEM).The results of XRD indicate that the time of hydrothennal treatment has a important effect on the synthesis of NaV_2O_5,and the pure can be obtained by controlling the time of hydrothermal reaction,the morphology of NaV_2O_5 prepared by both hydrothermal methods is single-crystal nano-belt with a layer crystal structure.And a crystal growth mechanism for α′-NaV_2O_5 Nano-belt,oriented-attachment,is proposed and described in detail.
引文
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[3]Berthelot R,Carlier D,Delmas C.Electrochemical investigation of the P2-NaxCo02phase diagram[J].Nature materials,2010,10(1):74-80.
[4]Tarascon J M,Guyomard D G,Wilkens B,et al.Chemical and electrochemical insertion of Na into the spinelλ-MnO_2 phase[J].Solid state ionics,1992,57(1):113-120.
[5]Didier C,Guignard M,Darriet J,et ai.O'3-Na_xVO_2 System:A Superstructure for Na_(1/2)VO_2[J].Inorganic Chemistry,2012,51(20):11007-11016.
[6]Tepavcevic S,Xiong H,Stamenkovic V R,et al.Nanostructured Bilayered Vanadium Oxide Electrodes for Rechargeable Sodium-Ion Batteries[J].NANO,2011,6(1):530-538.
[7]Delmas C,Braconnier J.J.,Fouassier C.,et al.Electrochemicalintercalation of sodium in Na_xCoO_2 bronzes[J].Solid State Ion.,1981,3-4:165-169.
[8]Takada K,Sakurai H,Takayama-Muromachi E,et al.Superconductivity in two-dimensional CoO_2 layers[J].Nature,2003,422(6927):53-55.
[9]Terasaki I,Sasago Y,Uchinokura K.Large thermoelectric power in NaCo_2O_4 single crystals[J].Physical Review B,1997,56(20):R12685-R12687.
[10]Lee M,Viciu L,Li L,et al.Large enhancement of the thermopower in NaxCoO_2 at high Na doping[J].Nature materials,2006,5(7):537-540.
[11]McQueen T M,Stephens P W,Huang Q,et al.Successive Orbital Ordering Transitions in NaVO_2[J].Physical review letters,2008,101(16):166402.
[12]Hamani D,Ati M,Tarascon J M,et al.Na_xVO_2 as possible electrode for Na-ion batteries[J].Electrochemistry Communications,2011,13(9):938-941.
[13]Smirnov A I,Sosin S S,Calemczuk R,et al.Thermal and magnetic properties of defects in the spin-gap compound NaV_2O_5[J].Physical Review B,2000,63(1):014412.
[14]Liu P,Zhu K,Gao Y,et al.Ultra-long VO_2(A)nanorods using the high-temperature mixing method under hydrothermal conditions:synthesis,evolution and thermochromic properties[J].CrystEngComm,2013,15:2753-2760.