Transition metal oxide-carbon composites as conversion anodes for sodium-ion battery. (10th August 2015)

• Record Type: Journal Article
• Authors: Hasa, Ivana; Verrelli, Roberta; Hassoun, Jusef
• Is Part Of: Electrochimica acta. Volume 173(2015)
• Page Start: 613
• Page End: 618
• Publication Date: 2015-08-10
• Subjects: Conversion electrode -- Transition-metal oxides -- CuO composite anode -- Sodium-ion battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.05.107
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Herein, we characterize various metal oxide-carbon composites, i.e. CuO-MCMB (mesocarbon microbeads), Fe2 O3 –MCMB and NiO-MCMB, as anode materials for application in sodium-ion battery. The electrodes, supposed to react through a conversion mechanism, are studied in terms of structure, morphology and electrochemical behavior in sodium cell. The results demonstrate a specific capacity of the order of 100 mAh g −1 for Fe2 O3 –MCMB and NiO-MCMB, and of about 300 mAh g −1 for CuO-MCMB. The remarkable performance of the latter suggests the copper oxide-based electrode as the preferred anode material for battery application. Indeed, further study aimed to clarify the Na/CuO-MCMB reaction mechanism is performed by ex-situ X-ray diffraction on electrode material cast onto aluminum support. The study suggests a partial conversion reaction for CuO-based anode that is considered suitable candidate in replacement of sodium metal, in efficient and safe Na-ion battery.