Closed-loop recovery of nickel sulfate hexahydrate from spent lithium-ion batteries for fabrication high-performances Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode materials - Yola Bertilsya Hendri; Ching-Hsiang Hsu; Jia-Hao Hu; Yi-Shiuan Wu; Amun Amri; Chun-Chen Yang (Chemical Engineering Journal, 2026)