Effect of Pr content in Ml on the electrochemical properties of Ml(NiCoMnAl)5 alloys

A study on the structural and electrochemical properties of La0.7−xNdxMg0.3Ni2.45Co0.75Mn0.1Al0.2 (x=0.0–3.0) hydrogen storage alloys

“…Considerable investigations on element substitutions have been done systematically for different type alloys. It has been found that the partial substitution of La by Ce, Pr or Nd in rare earth-based AB 5 -type alloys generally results in a markedly increase in the equilibrium hydrogen pressure [23] and an improvement in the anti-corrosion ability [24][25][26][27].…”

Microstructure and composition of rare earth-transition metal-aluminium-magnesium alloys

“…In the past a small amount of praseodymium was added to these materials, along with mish metal (MM) [1][2][3][4][5][6][7][8][9][10] . Optimization of the Pr content (from 0 to 0.4 at.% in the alloy) with respect to electrochemical properties of MMAl 0.3 Mn 0.3 Co 0.4 Ni 4.0 alloys (MM = LaNdPr) has also been reported 11 . It has been shown that the electrochemical properties of the electrode made with the alloy containing about 20 at.% Pr in the MM were significantly improved.…”

“…AA size cells in which the (LaNdPr)Al 0.3 Mn 0. 4 Co 0.8 Ni 3.5 electrode alloy contained about 17 at.% Pr in the MM showed a very long cycle life (1400 cycles) with reasonable capacity (1250 mAh) and also discharged rate capacity (1100 mAh at 5 C) 11 . These batteries also showed higher capacity at low temperatures (1050 mAh when discharged at 1 °C and -18 °C).…”

Corrosion resistance and microstructure characterization of rare-earth-transition metal–aluminum–magnesium alloys

“…Battery size cells in which the (LaNdPr)Al 0. 3 cycle life (1400 cycles) with reasonable rate capacity (1100 mAh when discharged at 5 C) [31]. In the annealed condition, the La 0.7 Mg 0.3 Al 0.2 Mn 0.1 Co 0.75 Ni 2.45 alloy showed a maximum discharge capacity of 370.0 mAh/g [32].…”

“…Praseodymium has been incorporated into the alloys together with mish metal (MM) [21][22][23][24][25][26][27][28][29][30]. Pr content varying from 0 to 0.4 at.% in MMAl 0.3 Mn 0.3 Co 0.4 Ni 4.0 alloys (MM = LaNdPr) has also been reported [31]. It has been shown that the electrochemical properties were greatly improved in an electrode alloy containing about 20 at.% Pr in the MM.…”