基于CoFe2O4@C锂空气电池正极催化剂的研究

doi:10.11962/1006-4990.2020-0347

Abstract

Abstract:

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.

Key words: cathode catalyst, lithium-air battery, limited-capacity cycling, cut-off voltage

CLC Number:

TQ138.12

Wang Xiangjun,Gao Li,Xu Lei,Chi Yongqing. Study on CoFe₂O₄@C as cathode catalyst of Li-air battery[J]. Inorganic Chemicals Industry, 2021, 53(5): 96-99.

Figures/Tables 5

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References 20

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Study on CoFe₂O₄@C as cathode catalyst of Li-air battery

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Study on CoFe2O4@C as cathode catalyst of Li-air battery