Correction: Wodecka-Dus, B. et al., Chemical and Physical Properties of the BLT4 Ultra Capacitor-A Suitable Material for Ultracapacitors Materials 2020, 13, 659.

The authors wish to make the following corrections to this paper [...].

The authors wish to make the following corrections to this paper [1]:

The manuscript contains one mistake, namely, Figure 6 is incorrect.

Figure 6

Residual spectrum (residuals) showing the frequency relationship of the relative difference between the experimental data and the data obtained as a result of the K-K test at T = 230 °C for BLT4 ceramics.

The correct Figure 6 is as follows:

The authors would like to apologize for any inconvenience caused to the readers by this change.