The Atomic Layer Deposition technique is especially suited for formation of conformal coating of pinhole free films on surfaces with complex geometrical shapes, an architecture most commonly adopted for micro battery designs. Realization of all solid state Li-ion microbatteries should therefore be close at hand, however, no fully functional all solid state ALD-type battery is …
Præsentationer
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Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/atomic-layer-deposition-in-a-battery-perspective.htm
In situ synchrotron XRD on a capillary Li-O2 battery
In situ studies give an opportunity to explore systems with a minimum of external interference. As Li-air batteries hold the promise for a future battery technology the investigation of the discharge and charge components of the cathode and anode is of importance, as these components may hold the key to making a large capacity rechargeable …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/in-situ-synchrotron-xrd-on-a-capillary-li-o2-battery.htm
In situ study of hydrothermal formation of spinel type LiMn2O4 nanocrystals
Solvothermal reactions have been shown to be a good way to synthesize nanocrystalline materials. Many properties of the product, such as phase composition, crystallite size, morphology and crystallinity, can be controlled by changing and controlling synthesis conditions, such as reaction temperature, heating rate, reaction time, precursor concentration and pH. Ex situ investigation of the effect …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/in-situ-study-of-hydrothermal-formation-of-spinel-type-limn2o4-nanocrystals.htm
Degradation of LFP-based Battery System used for Primary Frequency Regulation
Lithium-ion batteries have developed into a popular energy storage choice for a wide range of applications because of their superior characteristics in comparison to other energy storage technologies. Besides modelling the performance behaviour of lithium-ion batteries, it has become of huge interest to accurately estimate their degradation because of both economic and technical considerations. The …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/degradation-of-lfp-based-battery-system-used-for-primary-frequency-regulation.htm
Introduction and TiO2
General introduction to the battery group at Aarhus University and description of how they take advantage of a closely integrated feedback loop between synthesis, structure characterization and electrochemical properties. The battery test cells used in the group is described, including the in-situ split flat cell used to do in-situ XRD tests. Check out the presentation here
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/introduction-and-tio2.htm
Metal borohydrides as solid-state electrolytes
Storage of renewable energy is essential in order to create a new sustainable energy economy e.g. directly as electricity in a Li-battery or indirectly as hydrogen in a solid state metal hydride.1 Batteries are rechargeable but have moderate life time and limited energy storage capacity. Metal borohydrides can store considerable amounts of energy as hydrogen …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/metal-borohydrides-as-solid-state-electrolytes.htm
Procrystal analysis for easy visualization of Li pathways
The search for novel crystalline materials for use as electrodes in battery materials is a lengthy and costly process. There is a great need for a fast evaluation tool to supplement already existing experimental and theoretical methods. In this talk, the procrystal analysis is introduced as a fast technique for pointing out promising candidates for …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/procrystal-analysis-for-easy-visualization-of-li-pathways.htm
In-situ synchrotron powder X-ray diffraction
Our group has developed and successfully used an in-situ measurement setup for the study hydrothermal formation of nanoparticles under sub- and supercritical conditions. The presentation introduces details of the experimental setup as well as explaining each step of the data analysis. As an example of one of our experiment some preliminary results of a temperature …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/in-situ-synchrotron-powder-x-ray-diffraction.htm
Kan batteridrift i elektriske tog helt eller delvist erstatte køreledninger?
Store investeringer til elektrificering af jernbaner kan muligvis spares ved i stedet at ”batterificere” tog. Teknisk set er batteridrift et interessant alternativ til en fuld elektrificering med køreledninger. Der har i over 100 år været batteridrift i Tyskland – frem til 1995. Det var med gamle, store og tunge blysyrebatterier. Ny batteriteknologi, der er udviklet …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/kan-batteridrift-i-elektriske-tog-helt-eller-delvist-erstatte-koreledninger.htm
Chemical processes, their equivalent circuits and common pitfalls
Further elaboration on the equivalent circuits for EIS measurements and how they are linked to the chemical processes. Johan also explained some of the pitfalls of using equivalent circuits to model the impedance response, as it is always possible to construct an equivalent circuit with the right output characteristics, but that might not be a …
Permanent link to this article: http://batteriselskab.dk/arrangementer/praesentationer/chemical-processes-their-equivalent-circuits-and-common-pitfalls.htm