Projekt

Ionic Liquids-based Electrolyte for Lithium battery

Udbyder

Vejleder

Sted

København og omegn

Background

    Lithium batteries are used in many portable electronic products and also in electric vehicles. Advantages of lithium batteries are their high energy density, high voltage, long lifetime, low self-discharge. In addition, lithium batteries are environmentally friendly. The cathode material LiNi0.5Mn1.5O4 has a 4.75V discharge platform. This is higher than traditional materials. Application of this cathode material can enhance the energy density and power density of lithium batteries. As conventional electrolytes have an electrochemical window of around 4.5 V, a new electrolyte with a wider electrochemical window needs to be found. In this project, new types of electrolytes for high voltage lithium batteries are explored. It is examined if ionic liquids as a part of the electrolyte material can improve the cyclic life and safety of such lithium batteries. The electrolytes can contain different ratios and types of ionic liquids, different organic materials, and different lithium salts with different concentrations.

Project content

·         Investigate the physical and chemical properties of electrolytes with ionic liquids, including purity, density, viscosity, conductivity, melting point, and electrochemical window.

·         Determine the phase diagrams of possible electrolyte materials.

·         Study the Li+ diffusion regularity in ionic liquids-based electrolytes at different temperatures.

Forudsætninger

Experience with experimental work and thermodynamics

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Kontakt

Virksomhed/organisation

DTU Kemiteknik

Navn

Kaj Thomsen

Stilling

Lektor

Mail

KTH@kt.dtu.dk

Vejleder-info

Kandidatuddannelsen i Anvendt Kemi

Vejleder

Kaj Thomsen

Medvejledere

Yingjun Cai

ECTS-point

30

Type

Kandidatspeciale

Kandidatuddannelsen i Kemisk og Biokemisk Teknologi

Vejleder

Kaj Thomsen

Medvejledere

Yingjun Cai

ECTS-point

30

Type

Kandidatspeciale

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

Find os her

Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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