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GRAFEN IN NJEGOVA UPORABA
MERLJAK, MATEJ (Author), Smole, Franc (Mentor) More about this mentor... This link opens in a new window

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Abstract
Namen diplomskega dela je približati bralcu grafen v različnih pojavnih oblikah. Uvodoma sem predstavil definicijo grafena ter kako se oblikovno razlikuje od grafita, nanocevk in ostalih ogljikovih alotropov, sledi kratek zgodovinski opis. V nadaljevanju sem se osredotočil na njegove lastnosti, katere so pritegnile veliko pozornosti v raziskovalnem svetu, industriji pa tudi vladnih organizacij katere preko različnih programskih shem namenjajo veliko sredstev v raziskovalne namene. Lastnosti, katerim sem dal večji poudarek so elektronske lastnosti, ne gre pa zanemariti izjemnih lastnosti toplotne prevodnosti, katere imajo enega izmed ključnih pomenov pri načrtovanju elektronike, prav tako optičnih lastnosti, katere bodo prišle do izraza v senzoriki in fotovoltaiki. Iskanje novih aplikativnih rešitev, kot je na primer shranjevanje električne energije ali vodika kot pogonsko gorivo, nas je pripeljala od enostavnih enoslojnih grafenskih struktur oz. nanocevk do bolj kompleksnih, 3-D struktur, ojačanih struktur ter vrsto drugih struktur katere sem skušal čim bolje tudi grafično predstaviti. Predstavljene so tudi različne proizvodne tehnike, katere so po večini še laboratorijske narave in precej finančno zahtevne. Kot primer naj navedem, da so v letošnjem letu na Univerzi v Glasgowu odkrili postopek, ki naj bi proizvodni proces pocenil kar do 100-krat. Do občutne pocenitve samega materiala bo prišlo, ko bo le ta prehajala v industrijske procese proizvodnje. Glede na izjemne lastnosti se pričakuje široka uporaba grafena, vendar je to težko napovedovati. V zadnjem poglavju sem se odločil ponazoriti, kako bi lahko te izjemne lastnosti reflektirale v našem vsakdanjem življenju in dvigovale kvaliteto mobilnosti. Tako sem prikazal potencialne možnosti hranjenja vodika kot primer čistega pogonskega goriva ter novih materialov, uporabnih za hranjenje električne energije, kateri bi omogočali poleg večje avtonomije tudi hitrejše polnjenje baterijskih vložkov ter daljšo življenjsko dobo le-teh. Diplomsko delo sem zaključil s pozitivnimi pričakovanji široke uporabe grafena na področju različnih aplikacij v elektroniki, biomedicini, grabeništvu ter mehaniki.

Language:Slovenian
Keywords:grafen, lastnosti grafena, oblike grafena, proizvodni postopki, uporaba
Work type:Undergraduate thesis (m5)
Organization:FE - Faculty of Electrical Engineering
Year:2016
Views:1959
Downloads:1149
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Secondary language

Language:English
Title:GRAPHENE AND ITS APPLICATION
Abstract:
The purpose of the graduation thesis is to present the reader the graphene in vary possible forms. Starting with the definition of the graphene and how it varies from graphite, nanotubes and other GRM, continuing with a short history of the material. Than I tried to focus on its properties, which attract many interests of researchers, industries but also government institutions which are putting a lot of efforts and funds through vary sheems into research and development projects. I focused the most on electronic properties, but we can not neglect others like thermal conductivity which has an important role in electronic design, or optic properties which shall impact on photovoltaic industy and sensor industry. All the endevors in searching the new applicative solutions i.e. energy storage or hydrogen storage, lead us from very simple monolayer graphene structures or carbon nanotubes to more complex, 3-D structures, reinforced structures, and others which are described and visauly presented in the next paragraph. I also tried to highlight some production techniques, which are still mostly performed in laboratories but are still very lucrative. In the last year at the University in Glasgow was developed a techniqe, which may reduce the production costs for 100 times. A significant reduction of material price is expected when the production will massively pass from research athmosphere to industy. Regarding the magnificant material properties is expected a wide range of use, but more precisely it is very unpleasant to prospect. In the last chapter I decided to show how all the properties may reflect to our everyday life-style and leverage the quality of mobility. For that purpose I desribed the possibility of hydrogen storage, which represent one of the most possible frequent and clean fuel. Afterward I put attention to the battery applications, its autonomy and fast charging properties. In the conclusion of the graduation thesis I have expressed a very possitive expectations into aplicative solutions in the field of electronics, biomedicine, construction sector and mechanics.

Keywords:graphene, properties of graphene, structures of graphene, synthesis and production of graphene, aplications

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