Figure 4: Sodium storage performance of Na0.44[Mn1-xTix]O2 electrodes in non-aqueous solution. | Nature Communications

Figure 4: Sodium storage performance of Na0.44[Mn1-xTix]O2 electrodes in non-aqueous solution.

From: Ti-substituted tunnel-type Na0.44MnO2 oxide as a negative electrode for aqueous sodium-ion batteries

Figure 4

The 1st, 50th and 100th discharge/charge curves at a current rate of C/10 in the voltage range of 1.5 and 3.8 V versus Na+/Na. (a) Na0.44MnO2, (b) Na0.44[Mn0.89Ti0.11]O2, (c) Na0.44[Mn0.78Ti0.22]O2, (d) Na0.44[Mn0.67Ti0.33]O2, (e) Na0.44[Mn0.56Ti0.44]O2, (f) Na0.44[Mn0.44Ti0.56]O2. (g) Comparison of DFT calculated voltage curve and experiment curve for the Nax [Mn0.44Ti0.56]O2 electrode (note that entropy and temperature effects were not considered in calculation). (h) Comparison of the 2nd charge/discharge curve for Na0.44[Mn1-xTix]O2.

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