Evaluation / analysis related technology topics

We conduct the development of cutting-edge evaluation and analysis methods to meet the client’s needs.

Examples of development

  • ・ Input and output calculation through "current-rest-method" resistance analysis
  • ・ Method of separation of resistance using the “four-electrode cell”
  • ・ Complex analysis method for each resistance
  • ・ Method of separating electronic/ionic conductivity (inside electrodes)
  • ・ Limit load rate evaluation method (initial stage, deterioration simulation )
  • ・ Life prediction simulation method・ Reactive homogeneity simulation
  • ・ Original test method for safety mechanism analysis
  • ・ Mechanism clarification method by highly accurate voltage and current measurement
  • ・ Thin (100~20 μm) cross section enlargement analysis

Analysis of analysis of SEI composition at each depth in electrode cross section direction

  • ●It is effective for analysis of SEI composition change in the depth direction of several 10 μm to 100 μm from the surface.
    •  ・ Analysis of electrode uniformity and reactive homogeneity by XPS measurement in the depth direction
    •  ・ Suggestion for problem solving direction from estimated deterioration mechanism

Capturing inhomogeneous reaction closely related to secondary deterioration at design stage

●By capturing invisible inhomogeneous reaction (possibility of greatly influenced deterioration, hiding inside) at the beginning, feedback at design stage for performance improvement and suppression of secondary deterioration becomes possible.