Influence of different binder shares and electrolytes on the aging of electrodes

Master’s thesis

at the Technology Center Energy, Ruhstorf a. d. Rott

The Technology Center Energy (TZE) of the University of Applied Sciences Landshut offers a thesis for a  

Master student

in the field of lithium-ion battery development/production at the earliest possible date. The topic is

Influence of different binder shares and electrolytes on the aging of electrodes

Lithium-ion batteries (LIB) have been established over many years as an efficient storage medium with high energy and power densities. A promising active material is lithium titanate (LTO, Li4Ti5O12) with a working potential of 1.55 V against Li+/Li – the problem of electrolyte stability is thereby nearly excluded. High charging currents and very good chemical stability are further advantages of this material. To develop the existing technologies further, water based LTO electrodes will be prepared and electrochemically tested in LIB.  Different mixing formulations with various amounts of binders and electrolyte are to be compared and the influence of the individual materials examined. This assignment provides an interesting introduction to the ever-growing field of energy storage research with a focus on LIB and its materials research. The activities in a pilot line as well as various characterization instruments offer the opportunity to gain a broad insight into battery production and quality assurance possibilities.

The thesis  will include:

·        Literature research on possible combinations of active material and binder or electrolyte

·        Production and electrochemical characterization of electrodes in pouch cell format

·        Mechanical, morphological and electrochemical analysis of the prepared electrodes

Requirements:

·        Master study (chemistry, material sciences, physics, energy management, or equivalent)

·        Motivated, proactive personality, ability to work in a team

·        Experience in lab work

Please send your application as well as any queries to:

 

Dipl.-Ing. Christina Toigo
Email:christina.toigo(at)haw-landshut.de
Telefon: +49 (0)8531 914044 46

Dr.-Ing. Madhav Singh
Email: madhav.singh(at)haw-landshut.de
Telefon: +49 (0)8531 914044 14

TZ Energie

Preparation and optimization of lithium-iron-manganese-phosphate cathodes

Masters/Bachelors thesis

at the Technology Center Energy in Ruhstorf/Rott

The Technology Center Energy (TZE) of the University of Applied Sciences Landshut offers a thesis for a  

Master or bachelor student

in the field of lithium-ion battery development/production at the earliest possible date. The topic is

Preparation and optimization of lithium-iron-manganese-phosphate cathodes

Lithium-ion batteries (LIB) have been established over many years as an efficient storage medium with high energy and power densities. Several promising active material are being used or are under development. One of these active materials is lithium-iron-manganese-phosphate (LFMP), which shows a higher energy density compared to lithium-iron phosphate (LFP) as well as good properties concerning safety and performance. In standard use, LFMP is processed with a PVDF-binder by using NMP as a solvent. This solvent should be replaced by more compatible and ecologic substances. One approach is the use of acetone or/and the combination with another binder. The prepared electrodes will be later electrochemically tested in pouch cell format. This assignment provides an interesting introduction to the ever-growing field of energy storage research with a focus on LIB  and materials research. The activities in a pilot line as well as various characterization instruments offer the opportunity to gain a broad insight into the battery production and quality assurance possibilities.

The thesis will include:

·        Literature research on possible combinations of active material and binder or electrolyte

·        Production and characterization of electrodes in pouch cell format

·        Mechanical, morphological and electrochemical analysis of the prepared electrodes

Requirements:

·        Bachelor or master study (chemistry, material sciences, energy management, or equivalent)

·        Motivated, proactive personality, ability to work in a team

·        Experience in lab work

Please send your application as well as any queries to:

Dipl.-Ing. Christina Toigo
Email:christina.toigo@haw-landshut.de
Telefon: +49 (0)8531 914044 46

Dr.-Ing. Madhav Singh
Email: madhav.singh@haw-landshut.de
Telefon: +49 (0)8531 914044 14

TZ Energie

Set-up of an electrospinning-unit to optimize battery electrodes

Master/Bachelor thesis

at the Technology Center Energy in Ruhstorf/Rott

The Technology Center Energy (TZE) of the University of Applied Sciences Landshut offers a thesis for a  

Master or Bachelor student

in the field of lithium-ion battery development/production at the earliest possible date. The topic is

Set-up of an electrospinning-unit to optimize battery electrodes

Lithium-ion batteries have been established over many years as an efficient storage medium with high energy and power densities. Several promising active materials are being used or are under development. Due to progressive cost pressure, all other components of the cells (separator, binder, electrolytes) are also subjected to a permanent optimization process. One possible optimization step is the spinning of separators by fine polymer fibers, which is to be achieved by electrospinning. In this technique, the strong electric fields in a range of 100 – 500 kV/m are used to synthesis the fibers in the micro- to nanometer range between a metallic needle and a counter electrode. As a part of the thesis, experimental techniques for the spinning of polyolefin-materials shall be developed. Influence factors as polymer concentration (viscosity), applied voltage and ambient conditions are to be investigated. Subsequently, the materials are characterized both optically (light microscope, SEM) and mechanically. The main focus of the optical characterization is on the degree of wetting and its influencing factors.

The topic will include:

·        Literature research on useable and spinnable polymers

·        Spinning of membranes via electrospinning

·        Analysis of main influencing factors by optical and mechanical characterisation

Requirements:

·        Bachelor or master study (chemistry, physics, mechanical engineering or equivalent)

·        Motivated, proactive personality, ability to work in a team

·        Experience in lab work

Please send your application as well as any queries to:

Dipl.-Ing. Christina Toigo
Email:christina.toigo(at)haw-landshut.de
Telefon: +49 (0)8531 914044 46

Dr.-Ing. Madhav Singh

Email: madhav.singh(at)haw-landshut.de
Telefon: +49 (0)8531 914044 14

TZ Energie

Use of electrospinning technique to optimize the battery electrodes

Master´s thesis

at the Technology Center Energy in Ruhstorf/Rott

The Technology Center Energy (TZE) of the University of Applied Sciences Landshut offers a thesis for a

Master student

in the field of lithium-ion battery development/production at the earliest possible date. The topic is

Use of electrospinning technique to optimize the battery electrodes

Lithium-ion batteries (LIB) have been established over many years as an efficient storage medium with high energy and power densities. Several promising active materials such as lithium titanate (LTO, Li4Ti5O12), lithium iron phosphate (LFP) or lithium iron manganese phosphate (LFMP) are being used or are under development. Due to the high cost of active materials, all other components of the cells (separator, binder, electrolytes) are also subjected to a permanent optimization process. One possible optimization step is the spinning of separators by fine polymer fibers, which is to be achieved by electrospinning. In this process, strong electric fields in a range of 100 – 500 kV/m are used to synthesis the fibers in the micro- to nanometer range between a metallic needle and a counter electrode. As a result, a very precise application of fibers with variable degrees of wetting can be achieved. As a part of Master's thesis, separators are spun with different polymers and different factors such as polymer concentration, applied voltage and ambient conditions are investigated. Subsequently, the separators spun with the polymer fibers are characterized both optically (light microscope, SEM) and with regard to their electrochemical performance in the complete cell. The main focus of the optical characterization is on the degree of wetting and its influencing factors.

The thesis will include:

·        Literature research on useable and spinnable polymers

·        Spinning of separators via electrospinning technique

·        Analysis of main influencing factors by optical and electrochemical characterizations

Requirements:

·        Master study (chemistry, material sciences, energy management, or equivalent)

·        Motivated, proactive personality, ability to work in a team

·        Experience in lab work

Please send your application as well as any queries to:

Dipl.-Ing. Christina Toigo
Email:christina.toigo(at)haw-landshut.de
Telefon: +49 (0)8531 914044 46

Dr.-Ing. Madhav Singh

Email: madhav.singh(at)haw-landshut.de
Telefon: +49 (0)8531 914044 14

TZ Energie

Preparation of water-based lithium-iron-manganese-phosphate cathodes

Masters/Bachelor thesis

at the Technology Center Energy in Ruhstorf/Rott

The Technology Center Energy (TZE) of the University of Applied Sciences Landshut offers a thesis for a  

Master or bachelor student

in the field of lithium-ion battery development/production at the earliest possible date. The topic is

Preparation of water-based lithium-iron-manganese-phosphate cathodes

Lithium-ion batteries (LIB) have been established over many years as an efficient storage medium with high energy and power densities. Several promising active material are being used or are under development. One of these active materials is lithium-iron-manganese-phosphate (LFMP), which shows a higher energy density compared to lithium-iron phosphate (LFP) as well as good properties concerning safety and performance Mainly, LFMP electrodes are prepared by using NMP as a solvent. An additional and very sustainable option is to use the complete formulation based on water as solvent. After detailed research, optimized water-based electrodes will be electrochemically tested in pouch cell format and subjected to various (mechanical, morphological and electrochemical) characterizations. This assignment provides an interesting introduction to the ever-growing field of energy storage research with a focus on LIB and materials research. The activities in a pilot line as well as various characterization instruments offer the opportunity to gain a broad insight into battery production and quality assurance possibilities.

The thesis will include:

·        Literature research on possible combinations of active material and binder or electrolyte

·        Production and characterization of electrodes in pouch cell format

·        Mechanical, morphological and electrochemical analysis of the prepared electrodes

Requirements:

·        Bachelor or master study (chemistry, material sciences, energy management, or equivalent)

·        Motivated, proactive personality, ability to work in a team

·        Experience in lab work

Please send your application as well as any queries to:

 

Dipl.-Ing. Christina Toigo
Email:christina.toigo(at)haw-landshut.de
Telefon: +49 (0)8531 914044 46

Dr.-Ing. Madhav Singh
Email: madhav.singh(at)haw-landshut.de
Telefon: +49 (0)8531 914044 14

TZ Energie