The values are summarized in Table and details of the method are included in Supplementary Note 4. If 𝐻 78 is the only factor influenced by cations in Eq. 4, 𝑗 '%( is expected to exhibit a linear relation with |𝜎| # according to Eqs. 2B, 4 and 7. However, no linear correlation between 𝑗 '%( and |𝜎| # could be identified (Fig. ). Thus, |𝜎| # cannot be the complete descriptor of the cation-dependence of 𝑗 '%( , suggesting that 𝑆 *. in Eq. 4 is also cation dependent.