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Title:Preparation and electrochemical characterization of aluminium liquid battery cells with two different electrolytes ($NaCl-BaCl_2-AlF_3-NaF$ and $LiF-AlF_3-BaF_2$)
Authors:Napast, Viktor (Author)
Moškon, Jože (Author)
Homšak, Marko (Author)
Petek, Aljana (Author)
Gaberšček, Miran (Author)
Files:.pdf Acta_Chimica_Slovenica_2015_Napast_et_al._Preparation_and_Electrochemical_Characterization_of_Aluminium_Liquid_Battery_Cells_With_Two_Di.pdf (316,77 KB)
MD5: 4F1DE9C001301E7C81B4642C60D7506B
 
URL https://journals.matheo.si/index.php/ACSi/article/view/1516
 
Language:English
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:The possibility of preparation of operating rechargeable liquid battery cells based on aluminium and its alloys is systematically checked. In all cases we started from aluminium as the negative electrode whereas as the positive electrode three different metals were tested: $Pb$, $Bi$, and $Sn$. Two types of electrolytes were selected: $Na_3AlF_6-AlF_3-BaCl_2-NaCl$ and $Li_3AlF_3-BaF_2$. We show that some of these combinations allowed efficient separation of individual liquid layers. The cells exhibited expected voltages, relatively high current densities and could be charged and discharged several times. The capacities were relatively low (120 mAh in the case of $Al-Pb$ system), mostly due to unoptimised cell construction. Improvements in various directions are possible, especially by hermetically sealing the cells thus preventing salt evaporation. Similarly, solubility of aluminium in alloys can be increased by optimising the composition of positive electrode.
Keywords:liquid batteries, aluminium, alloy, electrochemistry
Year of publishing:2015
Number of pages:str. 796-804
Numbering:št. 4, Letn. 62
ISSN:1318-0207
UDC:66:544.643.076.2
ISSN on article:1318-0207
COBISS_ID:19298838 New window
DOI:10.17344/acsi.2015.1516 New window
NUK URN:URN:SI:UM:DK:Y3WJCZTY
Views:551
Downloads:250
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Record is a part of a journal

Title:Acta Chimica Slovenica
Shortened title:Acta Chim. Slov.
Publisher:Slovensko kemijsko društvo
ISSN:1318-0207
COBISS.SI-ID:14086149 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:09.06.2016

Secondary language

Language:Slovenian
Abstract:V pričujoči eksperimentalni študiji smo sistematično raziskali možnosti priprave delujoče (ponovno-napolnjive) baterije s tekočimi elektrodami na osnovi talin kovinskega aluminija in zlitin le-tega. Pri vseh eksperimentih smo v začetnem stanju sistema kot negativno elektrodo uporabili aluminij, za pozitivno elektrodo pa smo uporabili tri različne kovine: $Pb$, $Bi$ in $Sn$. Izbrali smo dva različna elektrolita: $Na_3AlF_6-AlF_3-BaCl_2-NaCl$ in $Li_3AlF_3-BaF_2$. V prispevku pokažemo, da je možno z nekaterimi od omenjenih kombinacij elektrod in elektrolita pripraviti baterijske celice, ki imajo učinkovito ločene posamezne tekoče faze. Testirane celice so imele pričakovano napetost in jih je bilo možno nekajkrat izprazniti/napolniti z relativno visoko gostoto toka. Dosežene kapacitete so bile razmeroma nizke (najvišja 120 mAh v primeru $Al-Pb$ sistema), kar pripisujemo ne-optimizirani konstrukciji celic. Delovanje prikazanih aluminijevih baterijskih celic bi bilo možno izboljšati z različnimi pristopi – zlasti s hermetično zatesnitvijo, s čimer bi preprečili izhlapevanje elektrolita. Z optimizacijo sestave pozitivne elektrode bi bilo možno tudi povečati topnost aluminija v zlitinah.
Keywords:tekoče elektrode, aluminij, elektrokemija


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