Can't access this article, but it points to HPA's use:
Alumina-Coated Patterned Amorphous Silicon as the Anode for a Lithium-Ion Battery with High Coulombic Efficiency
It's a start. Doing this spurious, incomplete search reminded me that we know NOTHING of ORT's products' uses being developed as I type, you read. Same with Sc. There are products/applications, ETC. that: a) are in the lab; b) shelved for wont of material, and WHO KNOWS!!