Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe2O4 for the Li-O2 Battery

In this paper, CoFe2O4@pyrolyzed bacterial cellulose (CFO@PBC) nanocomposites were synthesized by a hydrothermal process and an in situ composite technique as the cathode for rechargeable Li-O2 batteries (LOB). CoFe2O4@Ketjenblack (CFO@KB) prepared same way comparison. The as-prepared materials characterized SEM, XRD, BET. LOB with CFO@PBC-3 showed maximum initial discharge capacity of 2660 mAh g−1 (electrode) at current density 100 mAg−1, while mass ratio CoFe2O4 pyrolyzed was 3. cyclic voltammetry CFO@PBC nanocomposite electrodes investigated 0.1 mVs−1 voltage window 2.0–4.5 V. With limited 640 (electrode), electrode best cycle stability higher cutoff discharging. cellulose, fibrous 3D backbone electrodes, produced better results than CFO@KB.