Enhanced thermoelectric property of cement-based materials with the synthesized MnO2/carbon fiber composite

The thermoelectric effect of the cement paste with the MnO2/carbon fiber composite inside was firstly reported in this work. The MnO2/carbon fiber composite was synthesized based on the redox reaction between potassium permanganate and carbon. After the reaction, α-MnO2 particles grew on the surface of carbon fiber. The nanorod-shaped MnO2 particles exhibit a diameter of about 50 nm and a length range of 100–300 nm. The weight ratio of MnO2 to...