Electrochemical and Structural Properties of Si/Ni/Cu Electrode Films Fabricated with Different Methods
Si film electrodes for Li micro-film batteries were fabricated on a Cu substrate and a Ni/Cu film. In the structural properties, Si film had an amorphous structure, while the crystallinity of Ni buffer film was improved after annealing. FE-SEM observation demonstrated differences in surface morphologies of Si films fabricated with different methods. In the electrochemical properties, the Ni-inserted film showed the largest initial charge and discharge capacity, and the cell with annealed Si/Ni/Cu film showed good cycleability. It is believed that the insertion of Ni film as a buffer film improved the charge and discharge capacity owing to the enhancement of adhesion between Si film and Cu substrate.
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
G. B. Cho et al., "Electrochemical and Structural Properties of Si/Ni/Cu Electrode Films Fabricated with Different Methods", Materials Science Forum, Vols. 510-511, pp. 266-269, 2006