Combining in-situ X-ray diffraction with thermogravimetry and differential scanning calorimetry - An investigation of CO3O4, MnO2 and PbO2 for thermochemical energy storage

摘要

Metal oxides with multiple accessible oxidation states are considered as promising candidates for high temperature thermochemical energy storage materials. To shed light on the chemical processes involved in redox thermochemical energy storage materials, in-situ powder diffraction was used in combination with atmospheric control to investigate the redox-reactions of Co3O4, MnO2 and PbO2 under various conditions. Thermogravimetry and differential scanning calorimetry under the same conditions provided information on heat-flows and mass-changes.