Herein, we characterize various metal oxide-carbon composites, i.e. CuO-MCMB (mesocarbon microbeads), Fe2O3–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 Fe2O3–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.
Transition metal oxide-carbon composites as conversion anodes for sodium-ion battery / Hasa, Ivana; Verrelli, Roberta; Hassoun, Jusef. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 173:(2015), pp. 613-618. [10.1016/j.electacta.2015.05.107]
Transition metal oxide-carbon composites as conversion anodes for sodium-ion battery
HASA, IVANA;VERRELLI, ROBERTA;HASSOUN, JUSEF
2015
Abstract
Herein, we characterize various metal oxide-carbon composites, i.e. CuO-MCMB (mesocarbon microbeads), Fe2O3–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 Fe2O3–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.File | Dimensione | Formato | |
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