Nowadays, a promising combustion method known as a Chemical looping combustion may be a solution of obtaining met carbon dioxide neutrality when energy is generated. It provides a poten-tial carbon dioxide sequestration-ready stream as well as a considerable decrease in nitrogen oxide emissions. This may be achieved when an oxygen carrier (OC), a substance that serves as a medium for transferring of oxygen between fuel and air reactors during the combustion process is processed. It should show out an appropriate oxygen transport capacity, excellent reactivity to fuels and sufficient mechanical strength. In this work a spinel-based materials such as ferrites were characterised by TGA (thermogravimetric method) in function of temperature and biomass:OC ratio. The ability to spontaneously release oxygen owing to changes in its partial pressure, which is known as the CLOU (Chemical looping with oxygen uncoupling) effect, is desired, particularly for fossil fuel combustion. Different types of biomass were tested, both from Poland and South Korea. Both CLOU and CLC properties of obtained OCs were proved and profoundly evaluated using TGA-QMS. Summarizing, the research has shown that applying those mixed metals oxides via chemical looping may be a potential pathway to reach a net carbon dioxide neutrality during power production from biomass. Acknowledgement: The work was financed from the National Science Centre, Poland, Project No. 2020/37/B/ST5/01259.