Making Boron By Electrolysis?

After reading about some of Humphry Davy's experiments on isolating boron for the first time, I became convinced that an electrolytic extraction of elemental boron might be possible. I managed to find one reference (DOI: 10.1007/BF00651786 ) which seemed to suggest that boron could be made by electrolysis of molten sodium tetraborate. However, it doesn't seem like the method quite worked out for us.