Synthesis and Characterization of ZnO from Thermal Decomposition of Precipitated Zinc Oxalate Dihydrate as an Anode Material of Li-Ion Batteries oleh Cornelius Satria Yudha, Anjas Prasetya Hutama, Mintarsih Rahmawati, Hendri Widiyandari, Hartoto Nursukatmo, Hanida Nilasary, Haryo Satriya Oktaviano, Agus Purwanto