New paper: operando methods to pinpoint a phase change

Gallaway JOPS 2016 TOC figure

We have a paper in the newest volume of the Journal of Power Sources. Like much of my recent work, this is about collecting localized diffraction data inside a battery while it cycles. This let us see the sudden phase change from MnO2 to α-MnOOH, and also see that this precipitates a sudden conversion to spinel. (Which is bad.) I’ll have a full write up soon.

For now check out my new publications list for this and more.

The beauty of dye-sensitized solar cells

DSSC SwissTech

Check out these photos of EPFL’s SwissTech Convention Center, which has a facade covered in dye-sensitized solar cells (DSSCs). The archetypal dye for a DSSC is a ruthenium complex called “black dye.” Dyes like actually have an enchanting purple-brown-black color, which isn’t totally black. But you can theoretically use any molecule that will inject an electron into a semiconductor when hit by light, and I just did a bit of hunting around and found a company called Dyenamo that specializes in different colors. The bottom picture is from C&EN, which has an article on non-silicon solar cells this week.

DSSC SwissTech from C&EN