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. 2016 Feb 23;3(6):1500433. doi: 10.1002/advs.201500433

Figure 4.

Figure 4

Quantitative correlation between key spectroscopic features and stored charge density of NiO2Hx model electrode when 2 m KOH and 2 m KNO3 were used as electrolyte. a–d) The energy of Eg mode (i.e., ω(Eg)), energy of A1g mode (i.e., ω(A1g)), intensity ratio of A1g and Eg (i.e., I(A1g)/I(Eg)), and stored charge density as functions of WE potential when KOH was used as electrolyte, respectively. e–h) The values of ω(Eg), ω(A1g), I(A1g)/I(Eg), and stored charge density as functions of WE potential when KNO3 was used as electrolyte, respectively.