POTENSI SENYAWA OKSIDA DARI BLONDO SEBAGAI KATODA BATERAI (POTENCY OF OXIDE COMPOUNDS FROM BLONDO AS BATTERY CATHODE)

The limited source of Lithium (Li) as the main material for battery cathodes has become a problem in development new and renewable energy (EBT) sector. Based on their reduction potential availability earth, elements that might be suspected include Potassium (K), Sodium (Na), Magnesium (Mg) Calcium (Ca). All cannot obtained from natural ingredients, one which is blondo. Blondo by-product coconut oil processing not been used optimally. This study calcination process by varying time (5, 7, 9 hours) temperature (450, 550, 650°C) to obtain optimal oxide compounds Making cathode using mixture blondo Polvinyl Alcohol (PVA) with composition ratio 20:1 attached stainless steel plate. Testing percentage was carried out X-Ray Fluorescence (XRF) showed caused levels increase K2O, P2O5, MgO Cl. However, when were increased, it did give much different effect produced previously. known results Diffraction (XRD) shows higher temperature, smaller crystal size compound. At temperatures 450, 550 650°C yields are 50.0; 47.5 36.4 nm. also supported XRF testing where K2O most dominant component compound calcined test three cycles resulting an average charge capacity 14.67 mAh, discharge 5.34 mAh so efficiency 55.68%.