Google: slashes work fine in web page titles
A webmaster asked on Twitter whether it was okay to separate words with slashes in the title of a web page (for example word1/word2). Google’s John Mueller said that using slashes in the title was fine:
I’d just write natural titles, the way you’d want them to appear in search, and how you’d want to present them for users. Slash is fine & can perform well anywhere — if you were asking about AC/DC, I’d recommend AMP ⚡.
— 🍌 John 🍌 (@JohnMu) April 23, 2020