文献类型：期刊文献

中文题名：Preparation, characterization and electrochemical properties of mesoporous LiFe_(0.99)Mo_(0.01)PO_4/C

英文题名：Preparation, characterization and electrochemical properties of mesoporous LiFe0.99Mo0.01PO4/C

作者：Yu Chunyang[1,2];Wang Zhongli[2];Chen Yu[2];Xia Dingguo[2];Chu Wangsheng[3];Wu Ziyu[3]

第一作者：于春洋;Yu, Chunyang

通讯作者：Yu, CY[1]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China;[3]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2009

卷号：28

期号：4

起止页码：317-321

中文期刊名：稀有金属：英文版

外文期刊名：RARE METALS

收录：CSTPCD;;EI(收录号：20100312646603);Scopus(收录号：2-s2.0-74249103557);CSCD:【CSCD2011_2012】；PubMed;

基金：This work was financially supported by Beijing Natural Science Foundation (No. 207001), the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality, and the Major State Basic Research Development Program of China (No. 2002CB211807). We thank Xu Xuedong and Xiao Weiqiang (Institute of Solid and Microstructure, Beijing University of Technology) for their kind help in TEM and XRD analysis.; This work was also supported partly by the National Outstanding Youth Fund of China (No. 10125523 to Z.W.) and the Knowledge Innovation Program of Chinese Academy of Sciences (KJCX2-SW-N11, KJCX2-SW-H12-02).

语种：英文

中文关键词：电化学性能;扩展X射线吸收精细结构;表征;扫描电子显微镜;透射电子显微镜;制备;介孔;复合材料

外文关键词：lithium ion battery; cathode material; mesoporous composite; electrochemical properties

摘要：A mesoporous LiFe0.99Mo0.01PO4/C composite was synthesized by the sol-gel method using (NH4)2MoO4 as a doping starting material. The formation of conductive carbon, metal doping and mesopores was achieved simultaneously in the prepared material. The characterizations of crystal structures and microstructures were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), extended X-ray-absorption fine-structure (EXAFS) and X-ray-absorption near-structure spectroscopy (XANES), while the surface area was determined using N2 adsorption techniques. Cyclic voltammetry (CV) and charge-discharge cycling performance were used to characterize its electrochemical properties. The sample possessed uniformly distributed mesopores with an average pore size of 4 nm, and the specific surface area was about 69.368 m2/g. The results show that the reversible capacity of mesoporous LiFe0.99Mo0.01PO4/C is about 160 mAh/g at 0.1C, 135 mAh/g at 1C and 90 mAh/g at 5C, respectively. The capacity fading is neglectable.
A mesoporous LiFe0.99Mo0.01PO4/C composite was synthesized by the sol-gel method using (NH4)(2)MoO4 as a doping starting material. The formation of conductive carbon, metal doping and mesopores was achieved simultaneously in the prepared material. The characterizations of crystal structures and microstructures were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), extended X-ray-absorption fine-structure (EXAFS) and X-ray-absorption near-structure spectroscopy (XANES), while the surface area was determined using N-2 adsorption techniques. Cyclic voltammetry (CV) and charge-discharge cycling performance were used to characterize its electrochemical properties. The sample possessed uniformly distributed mesopores with an average pore size of 4 nm, and the specific surface area was about 69.368 m(2)/g. The results show that the reversible capacity of mesoporous LiFe0.99Mo0.01PO4/C is about 160 mAh/g at 0.1C, 135 mAh/g at 1C and 90 mAh/g at 5C, respectively. The capacity fading is neglectable.