diplomsko delo
Martin Kužnik (Author), Robert Dominko (Mentor)

Abstract

Kovinski litij je idealni material za anodo v akumulatorjih, zaradi nizkega elektrokemijskega potenciala in visoke teoretične kapacitete. Visoka reaktivnost kovinskega litija in rast dendritov med procesom polnjenja sta v preteklosti omejevali njegovo uporabo v komercialnih akumulatorjih. Te težavi bi lahko premagali z ustrezno zaščito kovinskega litija, do katere lahko pridemo z nanosom posebnih materialov. Eden izmed potencialnih zaščitnih materialov je celulozni kompozit, sestavljen iz modificirane nano-fibrilirane celuloze in litijevega nitrata. V sklopu diplomske naloge smo namesto litijevega nitrata v celuloznem kompozitu uporabili različne nitratne in litijeve soli. Litij-kovinskim anodam, zaščitenim z različnimi celuloznimi premazi smo določili kulonske učinkovitost. Kot sol, primerljivo z litijevim nitratom, smo določili kalijev nitrat.

Keywords

litij-ionski akumulator;litij-kovinski akumulator;anoda;celulozna zaščitna plast;medfazni trdni elektrolit;kulonska učinkovitost;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [M. Kužnik]
UDC: 621.355:546.34(043.2)
COBISS: 207471619 Link will open in a new window
Views: 69
Downloads: 29
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Other data

Secondary language: English
Secondary title: Effect of salts in a cellulosic protective layer on the electrochemical stability of metallic lithium
Secondary abstract: Lithium metal is an ideal material for the anode in batteries, due to its low electrochemical potential and high theoretical capacity. The high reactivity of metallic lithium and the growth of dendrites during the charging process have historically limited its use in commercial batteries. These issues could be overcome by adequate protection of metallic lithium, which can be achieved by applying special materials. One of the promising protective materials is a cellulose composite, composed of modified nano-fibrillated cellulose and lithium nitrate. In this thesis, various nitrate and lithium salts were used in the cellulose composite instead of lithium nitrate. The Coulombic efficiency of lithium-metal anodes protected with different cellulose coatings was determined. Potassium nitrate was identified as a salt comparable to lithium nitrate.
Secondary keywords: metallic lithium;cellulose protective layer;Coulombic efficiency;Litij;Akumulatorji;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000374
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages: 1 spletni vir (1 datoteka PDF (33 str.))
ID: 24985044