diplomsko delo
Ervin Rems (Author), Boštjan Genorio (Mentor)

Abstract

Razvoj baterijskih sistemov lahko pomembno prispeva k prehodu na ogljično nevtralno družbo. Kinonski baterijski materiali so še posebej zanimivi zaradi velike razširjenosti kemijskih elementov, iz katerih so sestavljeni, relativno visoke energijske gostote in strukturne fleksibilnosti, ki omogoča preprosto prilagajanje njihovih elektrokemijskih lastnosti. Z elektrokemijsko karakterizacijo izbranih kinonskih derivatov sem določil reverzibilnost reakcij in vpliv nekaterih strukturnih značilnosti na njihove redoks potenciale v organskem elektrolitu. Pokazano je bilo, da potenciali z uvedbo aromatskih sistemov v kinonski sistem padajo. Elektronprivlačni substituenti potenciale povečajo, elektrondonorski pa zmanjšajo. Molekule, v katerih sta karbonilni skupini v orto položaju, kažejo večje redoks potenciale od primerljivih para spojin. Glede na redoks potencial in reverzibilnost reakcije ter teoretične specifične kapacitete molekul sem izbral molekule, primerne za nadaljnji študij v akumulatorskih sistemih.

Keywords

akumulatorji;organske baterije;kinoni;elektrokemijska karakterizacija;ciklična voltametrija;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [E. Rems]
UDC: 621.355:547.567:543.552(043.2)
COBISS: 22830595 Link will open in a new window
Views: 496
Downloads: 197
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Other data

Secondary language: English
Secondary title: Electrochemical characterization of quinone derivatives for organic batteries
Secondary abstract: The development of new battery systems could be crucial for the transition to carbon-neutral society. Quinone battery materials are especially promising due to a widespread abundance of the elements in quinone molecules, relatively high energy density, and high structural flexibility, which can be used conveniently to adjust their electrochemical properties. Selected quinone derivatives were electrochemically characterized to determine the reversibility of the reactions and the effect of some structural units on the redox potential in the organic electrolyte. It was shown that the introduction of aromatic systems into quinones lowers the redox potential. In addition, electron-withdrawing groups increase the potential and, conversely, electron-donating groups decrease it. The ortho position of the carbonyl groups in quinones leads to a higher potential compared to para compounds. Most promising molecules, considering the redox potentials, reversibility, and theoretical specific capacity, were suggested to be further studied in battery systems.
Secondary keywords: quinones;electrochemical characterization;cyclic voltammetry;organic batteries;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000373
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages: 42 str.
ID: 11890315