Calcium cobaltate-based oxide thermoelectric material and its prepn.
Title:
Calcium cobaltate-based oxide thermoelectric material and its prepn.
Application Number:
02121433
Application Date:
2002/06/21
Announcement Date:
2003/01/08
Pub. Date:
Publication Number:
1389430
Announcement Number:
1182070
Grant Date:
2004-12-29
Granted Pub. Date:
2004-12-29
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
C01G 51/00, C04B 35/32, C04B 35/622, H01L 21/02
Applicant(s):
Tsinghua Univ.
Inventor(s):
Nan Cenwen, Nan Jun, Wu Junbo
Key Words:
Calcium cobaltate-based oxide, thermoelectric material, prepn.
Abstract:
The present invention relates to a calcium cobaltate base oxide thermoelectric material and its preparation method. Said invention utilizes sel-gel process, uses inorganic nitrate as raw material, uses citric acid as complexing agent to form sol at 60 deg.C-100 deg.C and form gel at 100 deg.C-130 deg.c, then utilizes presintering process to obtain precursor nano powder, finally utilzies sintering process to obtain block body material. The non-dimensional thermoelectric optimum value ZT of said prepared Ca3Co4O9 base oxide thermoelectric material is about 0.2 (in 1000 K). Said invented product can be used in the field of waste-head utilization and high-temp. power generation.
Claim:
Priority:
PCT:
LegalStatus:

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

Prepn and application of Li and Ti doped nickel oxide-base ceramic



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo