Distortion of MnO6 octahedra and electrochemical activity of Nstutite-based MnO2 polymorphs for alkaline electrolytes—an FTIR study

Effect of Non-ionic Surfactants and Its Role in K Intercalation in Electrolytic Manganese Dioxide

“…[40][41][42][43] Additional peaks at 968 and 1025 cm À1 are attributed to Mn-O-H structural vibrations in agreement with the spectral features reported by McBride. [44] D. Thermal Analysis Thermodynamic stability as well as electrical conductivity of manganese dioxide are strongly governed by the presence of water molecules in the crystal lattices; the water content causes a variation in the crystal lattice with a consequent effect on electrical conductivity.…”

“…[39] The absorption band at 1100 cm À1 can be attributed to the MnO 2 stretching mode and/or O-H bending vibrations [39] associated with hydrogen bonding, indicating the presence of bound water molecules. [40,41] The strong absorption band at~1630 cm…”

Electrodeposition of manganese dioxide: effect of quaternary amines

“…The presence of OH -groups and water molecules associated as bound water within the crystal structure can influence the electrochemical activity of the EMD [32][33][34]. For the sake of simplicity, the EMD sample prepared in the presence of 50 ppm organic additive was selected for all physical characterization (other than XRD, by which all samples were analyzed).…”

“…The absorption band at 1,100 cm −1 can be attributed to the MnO 2 stretching mode and/or O-H bending vibrations [35] associated with hydrogen bonding, indicating the presence of bound water molecules [32,33]. The strong absorption band at ∼1,630 cm −1 can be attributed to O-H bending vibrations associated with the water of crystallization [32] and a broad absorption band at ∼3,400 cm −1 is due to O-H stretching vibrations [32][33][34]. A weak absorption band is observed at ∼1,400 cm −1 indicating O-H stretching vibrations [36].…”

Dual Effect of Anionic Surfactants in the Electrodeposited MnO2Trafficking Redox Ions for Energy Storage

“…is assigned to the characteristic peak of MnO 6 octahedron, while the transmission band at 1100 cm −1 can be attributed to the MnO 2 stretching mode and/or O-H bending vibrations 41 associated with hydrogen bonding, indicating the presence of bound water molecules. 42,43 The strong band at ∼1630 cm −1 can be attributed to O-H bending vibrations associated with the water of crystallization 43 and a broad band at ∼3400 cm −1 is due to OH stretching vibrations. 42,43 A weak band is observed at ∼1400 cm −1 indicating O-H stretching vibrations.…”