Show simple item record

dc.contributor.author林晓琛zh_CN
dc.contributor.author吴晓彪zh_CN
dc.contributor.author侯旭zh_CN
dc.contributor.author杨勇zh_CN
dc.contributor.authorLIN Xiao-chenzh_CN
dc.contributor.authorWU Xiao-biaozh_CN
dc.contributor.authorHOU Xuzh_CN
dc.contributor.authorYANG Yongzh_CN
dc.date.accessioned2014-12-19T07:06:20Z
dc.date.available2014-12-19T07:06:20Z
dc.date.issued2014-12-28zh_CN
dc.identifier.citation电化学,2014,20(6):542-546.zh_CN
dc.identifier.issn1006-3471zh_CN
dc.identifier.urihttp://dx.doi.org/10.13208/j.electrochem.140416zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/80553
dc.description.abstract采用喷雾干燥制备前驱体,经高温烧结制得有电化学活性的钠离子电池NaMnPO4正极材料. X射线衍射分析(XRD)证明,合成的NaMnPO4材料系正交晶系、Pmnb空间群的磷钠锰矿(Natrophilite)型材料. 扫描电镜(SEM)及透射电镜(TEM)结果显示,喷雾干燥得到的前驱体为空心球粒子,经高温烧结后,该材料由粒径几十纳米的NaMnPO4纳米晶一次颗粒及无定形碳网络结构相互连接组成的微米级二次颗粒构成. 电化学测试表明,NaMnPO4/C复合结构显著改善了材料的离子电导与电子电导,首次报道电流密度为7.75 mA·g-1、电压范围为1.0 ~ 4.5 V (vs. Na+/Na)时,钠离子电池NaMnPO4正极材料的可逆放电比容量达90 mAh·g-1.zh_CN
dc.description.abstractAs a cathode material for sodium ion batteries, NaMnPO4/C nanocomposite is successfully synthesized by the combination of spraying drying and high temperature sintering methods. The crystal structure of the as-synthesized phosphate material is confirmed as the natrophilite NaMnPO4, which possesses orthorhombic symmetry and Pmnb space group. It is shown that the precursors are hollow spherical particles and the obtained product consists of micro-scaled secondary particles, which are composed of NaMnPO4 nanocrystallites (tens of nanometres) and amorphous carbon networks. The ionic and electronic conductivities of NaMnPO4 are both effectively enhanced with the help of this nanocomposite structure. In addition, the differences in the Na+-diffusion channel and local structures among the three types of NaMPO4, i.e. olivine, maricite and natrophilite, are also discussed. The electrochemical tests show that the natrophilite NaMnPO4 can deliver the reversible capacity of 90 mAh·g-1 at a current density of 7.75 mA·g-1 when cycled in the voltage range of 1.0-4.5 V (vs. Na+/Na).zh_CN
dc.description.sponsorship973国家重点基础研究发展计划(No. 2011CB935903)和国家自然科学基金(No. 21233004和No. 21021002)项目资助zh_CN
dc.language.isozhzh_CN
dc.publisher厦门大学《电化学》编辑部zh_CN
dc.relation.ispartofseries研究论文zh_CN
dc.relation.ispartofseriesArticleszh_CN
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract10122.shtmlzh_CN
dc.subject钠离子电池zh_CN
dc.subject正极材料zh_CN
dc.subjectNaMnPO4zh_CN
dc.subject喷雾干燥zh_CN
dc.subject电化学性能zh_CN
dc.subjectsodium ion batterieszh_CN
dc.subjectcathode materialzh_CN
dc.subjectNaMnPO4zh_CN
dc.subjectspraying dryingzh_CN
dc.subjectelectrochemical performancezh_CN
dc.title喷雾干燥-高温烧结的NaMnPO4制备及其电化学性能zh_CN
dc.title.alternativeSynthesis of NaMnPO4 by Spraying Drying-High Temperature Sintering and Its Electrochemical Performancezh_CN
dc.typeArticlezh_CN
dc.description.note作者联系地址:厦门大学 化学化工学院化学系,固体表面物理化学国家重点实验室,福建 厦门 361005zh_CN
dc.description.noteAuthor's Address: State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, Chinazh_CN
dc.description.note通讯作者E-mail:yyang@xmu.edu.cnzh_CN


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record