Publication Date:
2015-09-20
Description:
Organic carbonyl compounds represent a promising class of electrode materials for secondary batteries; however, the storage mechanism still remains unclear. We take Na 2 C 6 H 2 O 4 as an example to unravel the mechanism. It consists of alternating Na-O octahedral inorganic layer and -stacked benzene organic layer in spatial separation, delivering a high reversible capacity and first coulombic efficiency. The experiment and calculation results reveal that the Na-O inorganic layer provides both Na + ion transport pathway and storage site, whereas the benzene organic layer provides electron transport pathway and redox center. Our contribution provides a brand-new insight in understanding the storage mechanism in inorganic-organic layered host and opens up a new exciting direction for designing new materials for secondary batteries.
Electronic ISSN:
2375-2548
Topics:
Natural Sciences in General