diplomsko delo
Janja Šuster (Author), Robert Dominko (Mentor)

Abstract

Magnezijevi akumulatorji naj bi bili tisti, ki bodo v prihodnosti predstavljali enega izmed načinov shranjevanja energije. Z uporabo magnezija v akumulatorskih aplikacijah lahko namreč dosežemo višje kapacitete pri manjši masi in precej nižji ceni v primerjavi z Li-ionsko grafitno anodo. So pa ti akumulatorji v zgodnji fazi razvoja. Ena od glavnih komponent, ki je precej nerazvita, so elektroliti. Od njih je namreč močno odvisno delovanje akumulatorja. Z dodatkom različnih soli se njihove lastnosti spremenijo. V diplomskem delu smo v eksperimentalnem delu preverili vpliv različnih anionov na delovanje akumulatorjev. Za osnovne magnezijeve elektrolite, ki smo jim nato dodajali različne litijeve soli, smo vzeli do zdaj že uveljavljen APC in pa dva nova nekorozivna elektrolita Mg(TFSI)2 in Mg(B(hfip)4)2. Delovanje akumulatorjev smo ocenjevali preko reverzibilnega odlaganja Mg na delovno elektrodo. Pripravljene elektrolite smo ocenjevali glede na coulombsko učinkovitost odlaganja in prenapetost pri odlaganju.

Keywords

magnezijevi akumulatorji;magnezij;magnezijev tetrakis(heksafluoroizopropiloksi)borat;magnezijev bis(trifluorometansulfonimid);APC;litijeve soli;elektroliti;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [J. Šuster]
UDC: 621.355:546.46(043.2)
COBISS: 1538395587 Link will open in a new window
Views: 585
Downloads: 132
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Other data

Secondary language: English
Secondary abstract: Magnesium batteries are often seen as the future of energy storage. The use of magnesium metal anode inside a battery cell allows greater capacity at lesser mass and lower price when compared to Li-ion graphite anode. However, these batteries are in the early stages of development. One of the main components, that is currently underdeveloped, are electrolytes, as the performance and even research testing of batteries and potential battery materials depends on them. With the addition of different salts, their properties change. In the experimental part of diploma, we tested the influence of different anions on the performance of batteries. The basic magnesium electrolytes, to which different lithium salts were added, were previously established APC and two new non-corrosive electrolytes Mg(TFSI)2 and Mg(B(hfip)4)2. The performance of batteries was evaluated by reversible Mg deposition on the working electrode. The prepared electrolytes were evaluated for Coulombic efficiency and deposition overvoltage during Mg deposition process.
Secondary keywords: magnesium batteries;APC;magnesium tetrakis(hexafluoroisopropyloxy)borate;lithium salts;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 40 str.
ID: 11219422