diff --git a/free-science-books.md b/free-science-books.md
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 * [Chemistry 2e](https://openstax.org/details/books/chemistry-2e) - Paul Flowers, Klaus Theopold, Richard Langley et al. (PDF)
 * [Chemistry: Atoms First 2e](https://openstax.org/details/books/chemistry-atoms-first-2e) - Paul Flowers, Edward J. Neth, William R. Robinson et al. (PDF) 
 * [CK-12 Chemistry - Second Edition (2011)](https://unglue.it/work/140345/) - Sharon Bewick et al.
+* [Electrochemistry](https://unglue.it/work/488281/) - Mohammed A. A. Khalid
 * [From Vitamins to Baked Goods: Real Applications of Organic Chemistry (2012)](https://unglue.it/work/145870/) - Kieran Gallagher and Lizhi Fan
 * [Green Chemistry](https://unglue.it/work/488195/) - Mazaahir Kidwai, Neeraj Kumar Mishra
 * [Introduction to Chemistry](https://unglue.it/download_ebook/54777/) - Tracy Poulsen (PDF)