Preparation of Na1+xFe4P12 whiskers by hydrothermal reduction alloying synthesis method

被引:9
作者
Liu, H
Wang, JY [1 ]
Hu, XB
Gu, F
Hua, L
Zhang, CQ
Teng, B
Cui, DL
Pan, JQ
机构
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 230030, Peoples R China
[3] Commiss Sci Technol & Ind Natl Def, Rank Chemometr Stn 1, Jinan 250100, Peoples R China
关键词
D O I
10.1021/cm000017g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Skutterudite Na1+xFe4P12 whiskers were prepared by a new hydrothermal reduction alloying method. The diameter of the whisker is about 0.5-4 mum and its L/D ratio is about 10-20. Heating temperature and time can control the diameter and length of the skutterudite whisker. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), electronic diffraction (ED), and X-ray fluorescence analysis have been employed to characterize the products. XRD and ED revealed that the whiskers obtained at 200 degreesC are cubic skutterudite with a = 7.7995 Angstrom. X-ray fluorescence analysis proved that there are sodium atoms in the skutterudite structure. The possible formation mechanism of Na1+xFe4P12 is proposed.
引用
收藏
页码:151 / 154
页数:4
相关论文
共 11 条
[1]  
CHAMOZO LA, 1990, INORG CHEM, V29, P880
[2]  
DEVYAYKH GG, 1964, RUSS J PHYS CHEM, V38, P517
[3]   Composition of arsenic and phosphorus vapour in different annealing geometries determined by Raman spectroscopy [J].
Herms, M ;
Roth, K ;
Irmer, G .
JOURNAL OF CRYSTAL GROWTH, 1998, 186 (1-2) :166-174
[4]   LAFE4P12 WITH FILLED COAS3-TYPE STRUCTURE AND ISOTYPIC LANTHANOID-TRANSITION METAL POLYPHOSPHIDES [J].
JEITSCHKO, W ;
BRAUN, D .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1977, 33 (NOV) :3401-3406
[5]   LOW-TEMPERATURE TRANSPORT-PROPERTIES OF P-TYPE COSB3 [J].
MORELLI, DT ;
CAILLAT, T ;
FLEURIAL, JP ;
BORSHCHEVSKY, A ;
VANDERSANDE, J ;
CHEN, B ;
UHER, C .
PHYSICAL REVIEW B, 1995, 51 (15) :9622-9628
[6]  
Oftedal I, 1928, Z KRISTALLOGR, V66, P517
[7]   Electron crystals and phonon glasses: A new path to improved thermoelectric materials [J].
Sales, BC .
MRS BULLETIN, 1998, 23 (01) :15-21
[8]   Filled skutterudite antimonides: Electron crystals and phonon glasses [J].
Sales, BC ;
Mandrus, D ;
Chakoumakos, BC ;
Keppens, V ;
Thompson, JR .
PHYSICAL REVIEW B, 1997, 56 (23) :15081-15089
[9]   Filled skutterudite antimonides: A new class of thermoelectric materials [J].
Sales, BC ;
Mandrus, D ;
Williams, RK .
SCIENCE, 1996, 272 (5266) :1325-1328
[10]   Thermoelectric materials - Holey and unholey semiconductors [J].
Tritt, TM .
SCIENCE, 1999, 283 (5403) :804-805