リチウム二次電池の性能評価の標準化

概要

論文の詳細を見る
Cell performance of active materials is generally evaluated electrochemically by using a test cell which consists of the specially designed half cell for research purpose. However the results obtained often depend on the test cells with different configuration, and this makes the exact evaluation difficult. These cells consist of multiphase system such as active material, electrolyte, conductive filler, current collector and so on, and all the electrons or ions pass through each boundary layer during cell operation. Thus the path-ways of current flow would be profoundly affected by the state of these interfaces. In this report, we focused on the functions of hetero-contact phases between the cell component materials to design a test cell which enable us to know real cell performance of the active materials. Combinations of the electrolytes and the current collector materials, function of the conductive additive (carbon material) and the anodic oxide film on aluminum current collector were examined by using our unified test cell. The relationship between the cell performance and these functional hetero-contact phase at the cell component materials were discussed in detail.
2000-02-15