Facile syntheses of perovskite type LaMO3 (M=Fe, Co, Ni) nanofibers for high performance supercapacitor electrodes and lithium-ion battery anodes

Lanthanum-based LaMO 3 (M = Fe, Co, Ni) perovskite nanofibers were effectively fabricated by electrospinning approach coupled with calcination process. The crystallinity, microstructures, morphologies, elemental compositions, and chemical bonding states of LaMO 3 perovskites were investigated in detail. The electrochemical properties of LaMO 3 perovskite nanofibers as supercapacitor electrodes and lithium-ion battery anodes were elucidated. The specific capacitances of LaFeO 3 , LaCoO 3 , and LaNiO 3 nanofibers were 183.6, 95.8 and 116.3 F g −1 at the current density of 1 A g −1 , respectively. The supercapacitive properties of LaMO 3 NFs had originated from the redox reactions of M 3+ /M 2+ . As lithium-ion battery anodes, LaMO 3 (M = Fe, Co, Ni) nanofibers exhibited the specific discharge capacities of 331, 646, and 92 mAh g −1 after 200 cycles, respectively. This research endowed the potential and competent candidates of the perovskite type lanthanum-based nanofibers for supercapacitor electrodes and lithium-ion battery anodes.