Influence of boron introduction on structure and electrochemical hydrogen storage properties of Ti–V-based alloys

The Co-B Amorphous Alloy: A High Capacity Anode Material for an Alkaline Rechargeable Battery

“…According to the above experimental results, it can be concluded that the electrochemical performance is in following order: S C > S S > S N . As is well-known, Cl is the most electronegative element among the three anions, so Co 2+ is more electrophilic in CoCl 2 and attracts BH 4 − , which results in an improved electrochemical performance [29]. During the synthesis of Co-B alloys, it was confirmed that the anion plays a crucial role in altering the reaction pathways for the formation of Co-B or Co(OH) 2 [30].…”

“…For example, S C has an extremely high maximum discharge capacity of 844.6 mAh/g, which is much higher than that of conventional hydrogen storage alloys [1][2][3][4][5][6]. The maximum discharge capacity of S S and S N are 669.8 and 367.0 mAh/g, respectively.…”

“…In the past few decades, extensive studies on hydrogen storage alloys (HMs) as anode materials of nickel-metal hydride (Ni-MH) batteries have been reported as being used in portable electronics due to their high specific capacity, good durability, and environmental friendliness [1][2][3][4][5][6]. Up to now, many kinds of metal hydrides have been developed; for instance, Mg-based alloys exhibit a maximum discharge capacity above 500 mAh/g, but the poor cycling ability limits widespread practical application [7].…”

“…For instance, ultra-fine particles of the Co−B amorphous alloy were successfully prepared through NaBH 4 reduction of CoSO 4 . As an anode in an alkaline rechargeable battery, the discharge capacity of more than 600 mAh/g is obtained at the initial cycle.…”

Effect of Ball Milling on the Electrochemical Properties of La0.7(Mg0.25Ti0.05)(Ni0.85Co0.15)3.5 Hydrogen Storage Alloy

“…[1,2] Recently, several types of the hydrogen storage alloys have been extensively studied, including the rare earth-based AB 5 -type alloys, [3] Ti-based or Zr-based AB 2 -type alloys, [4] Mg-based alloys [5,6] and V-based solid solution alloys. [7] However, each type of alloy has its inherent advantages and disadvantages.…”