Hafiz H, Karyani KK, Rahman MFA, Sabri S, Lestari WP, Hidayat F. Synthesis of Natural Deep Eutectic Solvent from EFB Waste and Used Cooking Oil for Cathode Recovery. HJKK [Internet]. 2026 Jun. 30 [cited 2026 Sep. 8];14(3):497-50. Available from: https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/18997