Fluorite type La2Pb2O7 nanoparticles coated onto AgO as enhanced performance cathode active material for alkaline primary cell

چکیده مقاله

An enhanced discharge capacity of AgO cathode material is obtained by applying a surface layer comprising fluorite type La₂Pb₂O₇ nanoparticles. Preparing of the La₂Pb₂O₇ (LPO) nanoparticles is proceeded by facile coprecipitation method and the applies on the surface of as-prepared AgO using simple physical mixing process. Accurate characterizations disclose that the surface of AgO particles are thoroughly coated with La₂Pb₂O₇ nanoparticles. The surface coated AgO cathode active material has noticeable enhancement of performance at current density of 250 mA g⁻¹ compared to the pure AgO. The AgO+5%LPO cathode delivers the discharge capacity of 431 mAh g⁻¹, by contrast, the pure AgO cathode provides the discharge capacity of 371 mAh g⁻¹. Moreover, highest power density for the AgO+5%LPO cathode (664 mW cm⁻²) is higher than the pure AgO (583 mW cm⁻²). The electrochemical …