Improvement of thermal energy accumulation by incorporation of carbon nanomaterial into magnesium chloride hexahydrate and magnesium nitrate hexahydrate
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00539031" target="_blank" >RIV/61388955:_____/21:00539031 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/21:39917845
Result on the web
<a href="http://hdl.handle.net/11104/0316787" target="_blank" >http://hdl.handle.net/11104/0316787</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.renene.2020.12.115" target="_blank" >10.1016/j.renene.2020.12.115</a>
Alternative languages
Result language
angličtina
Original language name
Improvement of thermal energy accumulation by incorporation of carbon nanomaterial into magnesium chloride hexahydrate and magnesium nitrate hexahydrate
Original language description
Magnesium chloride hexahydrate and magnesium nitrate hexahydrate were tested for their thermal energy storage in a mixture with carbon materials. The graphite, graphene and zeolite-templated carbon replicas were used as a nucleating agent to supress supercooling. The addition of any type of carbon into magnesium chloride hexahydrate did not lead to a decrease in the supercooling and a significant decrease of the enthalpy of fusion and crystallisation was observed. The mixtures after cycling were apparently wet, indicating that some of the magnesium chloride was dissolved in its structural water. In the case of magnesium nitrate hexahydrate, the addition of carbon replicas of zeolite beta, mordenite or faujasite lead to a decrease in supercooling. Nevertheless, graphite and graphene provided the highest supercooling suppression from about 30 to 2.2 K within the fifty cycles. The thermal conductivity measurement of pressed tablets of magnesium nitrate hexahydrate with carbon materials at 2 MPa showed a significant increase of 9% and 15% for the addition of 3 mass% of graphene and 3 mass% of graphite, respectively. Mixing of magnesium nitrate hexahydrate with graphene or graphite improved heat transfer and significantly reduced unwanted supercooling, which is necessary for its use in thermal energy accumulation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Renewable Energy
ISSN
0960-1481
e-ISSN
1879-0682
Volume of the periodical
168
Issue of the periodical within the volume
MAY 2021
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
1015-1026
UT code for WoS article
000617113000003
EID of the result in the Scopus database
2-s2.0-85099642572