Progress of energy system with chemical-looping combustion

Chemical-looping combustion with zero energy penalty of CO2 separation is a significant breakthrough in resolving energy and environment problems for power generation systems. This paper summarizes the research on energy systems with chemical-looping combustion conducted in recent years, discloses the underlying mechanism of energy release of chemical-looping combustion, describes the trends of the key technology development, and presents the proposed chemical-looping combustion thermal cycles. This paper may provide a new direction to the synthesis of the next-generation energy system compatible with environment. Supported by the Natural Scientific Foundation of China (Grant Nos. 50520140517 and 50836005)