Electrochemical performance of compounds Ho_6Fe_(23–x)Co_x (x=0,1,3)

Alloys with composition of Ho6Fe23–xCox (x=0,1,3) were prepared and examined by X-ray diffraction technique and automatic battery testing instrument.The compounds Ho6Fe23–xCox (x=0,1,3) crystallized in cubic Th6Mn23-type structure with space group Fm 3m (No.225).The electrochemical properties of these alloys such as discharge capacity,cycling performance and high rate dischargeability were investigated by battery testing instruments in alkaline electrolyte.Substitution of small amounts of Co for Fe in Ho6Fe...     

Electrochemical performance of alloys Ho5Fe3CO12 and Ho33.3Co66.7

Alloys with composition Ho5Fe3Co12 and Ho33.3Co66.7 were prepared and examined by X-ray diffractometer and automatic battery testing instrument. The electrochemical properties of these alloys such as discharge capacity, cycling performance and high rate dischargeability were investigated by battery testing instruments in alkaline electrolyte. A comparison of the electrochemical performance of the Ho5Fe3Co12 and Ho33.3Co66.7 alloys revealed that alloy Ho5Fe3Co12 possessed a better electrochemical performance...