Fig. 4. Effects of the working condition on the actual capacity Q′(φκ) (curve ①), the number of pixels, S′(φκ)P, of strong active materials in the positive cross-sectional images (curve ②), the number of pixels, S′(φκ)N, of strong active materials in the negative cross-sectional images (curve ③), and the sum of S′(φκ)P and S′(φκ)N (curve ④).
