Inorganic Chemicals Industry >
Study on CoFe2O4@C as cathode catalyst of Li-air battery
Received date: 2020-08-16
Online published: 2021-05-12
Li-air battery has attracted extensive attention due to its ultra-high energy density,but its research is in the pri-mary stage.One of the main aspects of current research is to find a suitable cathode catalyst for Li-air battery.The CoFe2O4@Ketjenblack（CFO@KB） materials as cathode catalyst for Li-air battery were successfully synthesized by sol-gel combined with in-situ hydrothermal synthesis method.By adjusting the mass ratio of CoFe2O4 to Ketjenblack（1∶1,3∶1,5∶1 and 7∶1）,CFO@KBcomposites with different properties were obtained.Structure of the composites was characterized by XRD.It was found that the synthesized CoFe2O4 in the study was spinel type,and CFO@KB composites still presented its characteristic peak.When the capacity was limited to 180 mA·h/g（based on electrode materials） and the mass ratio of CoFe2O4 to Ketjenblack was1∶1,the composites exhibited the best capacity limiting cycle stability and high cut-off voltage.The voltage difference between charging voltage and discharging voltage was 0.2 V,which was less than the reported value in the existing literature.
Xiangjun Wang , Li Gao , Lei Xu , Yongqing Chi . Study on CoFe2O4@C as cathode catalyst of Li-air battery[J]. Inorganic Chemicals Industry, 2021 , 53(5) : 96 -99 . DOI: 10.11962/1006-4990.2020-0347
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