Effects of Magnesium Content on Structure and Electrochemical Properties of La-Mg-Pr-Al-Mn-Co-Ni Hydrogen Storage Alloys

Table 3

Composition determined using EDX at the centers of the G phase in the as-cast La_0.7−xMg_xPr_0.3Al_0.3Mn_0.4Co_0.5Ni_3.8 alloys.

x (N)	Analyzed composition (at.%)							Ratio
	La	Pr	Mg	Al	Mn	Co	Ni
0.0 (8)	8.1 ± 0.4	2.3 ± 0.4	—	4.0 ± 0.3	21.8 ± 1.4	8.5 ± 0.8	55.3 ± 1.3	—
0.1 (4)	6.4 ± 0.3	2.9 ± 0.2	10.9 ± 0.4	2.9 ± 0.2	10.3 ± 0.4	7.9 ± 0.3	58.7 ± 0.5	1 : 2.3 : 7.5
0.3 (7)	5.0 ± 0.3	4.3 ± 0.2	12.0 ± 0.6	3.7 ± 0.1	6.5 ± 0.5	7.4 ± 0.2	61.0 ± 0.3	1 : 2.0 : 8.0
0.5 (2)	3.5 ± 0.2	5.9 ± 0.3	12.4 ± 0.4	2.8 ± 0.1	4.8 ± 0.5	6.8 ± 0.6	63.8 ± 0.2	1 : 1.8 : 7.8
0.7 (6)	—	9.1 ± 0.3	12.5 ± 0.5	1.7 ± 0.2	3.8 ± 0.3	5.8 ± 0.5	67.0 ± 0.7	1 : 1.8 : 8.2

Number of independent measurements from the G phase. (La,Pr)/(Mg)/(Al,Mn,Co,Ni).