Search for new cathode materials for Li ion secondary batteries
Lithium ion secondary batteries are widely used as power storage for portable devices such as mobile phones and mobile PCs, as storage batteries that can store energy repeatedly. Recently, further improvement in performance (safety improvement, high capacity, high energy density, high durability, low cost, etc.) for large batteries such as electric cars, plug-in hybrid cars, and stationary type storage batteries, Research has been actively conducted. In actual batteries, it is requested to understand the chemical reaction at the atomic level in the positive electrode material or at the interface between the positive electrode material and the electrolyte, in order to determine the capacity, voltage and durability of the battery by taking out and discharging lithium in the positive electrode material It is done. In this theme, we will work closely with the experimental group with state-of-the-art measurement technology to clarify the chemical reaction inside the battery at the time of charging and discharging by using simulation technology and aim to develop new regulated electrode material.
· Collaborative research with Nissan Motors in Heisei 23 – 24
· MRS-J Young Encouragement Prize
· ISEOD 2014 Best Poster Award
· 2012 MRS Spring @ San Francisco, Blue Ribbon (Best Poster Nominee)
· 2013 MRS Spring @ San Francisco, Blue Ribbon (Best Poster Nominee)
Key words: quantum mechanics, first principles calculation, solid physics, Li ion secondary battery
Development of simulation visualization tool
This laboratory independently develops applications that visualize electron density and atomic arrangement ([Public Website]). You can see the results of calculations as images and movies as above and visually aid understanding of simulation results. It is completely written in Java language from scratch and can be run on almost all OS.
There are many software of this kind in the world, there are also very high-function and free software, but we also develop it independently in our laboratory. Doing so has the advantage of being able to draw what you want to display as you want, just by slightly changing the code, because you know the contents of the software completely.
Keywords: computer graphics, OpenGL, Java