Highly oriented LiFePO4 thin film electrodes via chemical solution deposition

• Highly oriented LiFePO4 thin film was prepared by chemical solution deposition.
• Electrode using stainless steel as substrate shows low apparent activation energy.
• Great potential to be used as cathode material for lithium thin film batteries

Highly oriented LiFePO4 thin-film electrodes were fabricated via chemical solution deposition combined with spin coating. The effects of the precursor concentrations and types of substrates on microstructures and electrochemical performances were studied. Single-phase LiFePO4 with orientations perpendicular to the (211)/(020) and (311) planes prepared using stainless steel as substrate presents the capacity of 4.9 μAh·cm− 2 and the apparent activation energy of 59.2 kJ·mol− 1, indicating its great potential to be used as cathode material for lithium thin film batteries.