Personally I'd never include Scihub into my workflow in a way that shows up in a publication. But I'm happy and amused that others do. :D
You wouldn't link to your friend's mailbox if it was your friend who sent you a copy of the article; why would you link to scihub for basically the same?
And the sci-hub link does not work while the original does!
Example from article:
http://www.sciencedirect.com.sci-hub.org/science/article/pii...
vs
https://www.sciencedirect.com/science/article/pii/S014070070...
Clearly it was not meant to. Especially if you look at reference 4 here [1], it looks like the internal format of whatever reference database the authors used, was accidentally leaked into to references. Probably missing commas somewhere.
HYPERLINK “http://link.springer.com/article/10.1007/s11661-007-9094-9”\t“_blank”
[1] https://www.sciencedirect.com/science/article/pii/S187538921...