Bi-Sr-Co-O thermoelectrics prepared by sol-gel methods with modified gel decomposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00388228" target="_blank" >RIV/68378271:_____/12:00388228 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/12:43893528

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1757-899X/30/1/012004" target="_blank" >http://dx.doi.org/10.1088/1757-899X/30/1/012004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/30/1/012004" target="_blank" >10.1088/1757-899X/30/1/012004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bi-Sr-Co-O thermoelectrics prepared by sol-gel methods with modified gel decomposition

Popis výsledku v původním jazyce

We prepared misfit Bi2Sr2Co1.8Ox (Bi-222) phase as a member of a Bi-Sr-Co-O family. Two water based sol-gel methods were chosen with regard to the presence of a strongly hydrolysing Bi3+ ion - chelating route combining EDTA (ethylenediaminetetraacetic acid) and TEA (triethanolamine) and, secondly, water soluble polymer method using PEI(polyethylenimine).We focused on the influence of gel decomposition process on the grain size of precursor and, consequently, on the bulk density of the final samples. Wetested decomposition in N2 atmosphere followed by a treatment in pure oxygen. The precursors decomposed in "N2/O2" regime were mainly composed of Bi2O3, SrCO3 and cobalt oxides with the grain size of approximately 50-100 nm. The powders arising from geldecomposition in air contained the desired Bi-Sr-Co-O oxide as the major phase independently of the chosen sol-gel method.

Název v anglickém jazyce

Bi-Sr-Co-O thermoelectrics prepared by sol-gel methods with modified gel decomposition

Popis výsledku anglicky

We prepared misfit Bi2Sr2Co1.8Ox (Bi-222) phase as a member of a Bi-Sr-Co-O family. Two water based sol-gel methods were chosen with regard to the presence of a strongly hydrolysing Bi3+ ion - chelating route combining EDTA (ethylenediaminetetraacetic acid) and TEA (triethanolamine) and, secondly, water soluble polymer method using PEI(polyethylenimine).We focused on the influence of gel decomposition process on the grain size of precursor and, consequently, on the bulk density of the final samples. Wetested decomposition in N2 atmosphere followed by a treatment in pure oxygen. The precursors decomposed in "N2/O2" regime were mainly composed of Bi2O3, SrCO3 and cobalt oxides with the grain size of approximately 50-100 nm. The powders arising from geldecomposition in air contained the desired Bi-Sr-Co-O oxide as the major phase independently of the chosen sol-gel method.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F09%2F1036" target="_blank" >GA203/09/1036: Termoelektrické kobaltity</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IOP Conference Series: Materials Science and Engineering

ISSN

1757-8981

e-ISSN

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Svazek periodika

30

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

000300933300005

EID výsledku v databázi Scopus

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