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The electrochemical properties of the as-cast CeMg_(11)Ni and ball-milled CeMg_(11)Ni+x% Ni(x=0, 50, 100 and 200, mass fraction) composites were investigated. The results show that homogeneous amorphous phase of CeMg_(11)Ni+x% Ni composite can be obtained by ball-milling, and discharge capacity of the ball-milled CeMg_(11)Ni+x% Ni composites differs greatly depending on the amount of Ni introduced during milling. The CeMg_(11)Ni+200% Ni composite after 90 h ball-milling was found to exhibit a large discharge capacity of about 1 012 mAh/g at 303 K, and it also shows better charge-discharge cycling stability than those with lower Ni content. This remarkable improvement in electrochemical properties of the ball-milled composites seems to be attributed to the formation of an (amorphous) composite as well as the improvement of the surface state of the ball-milled particles.
The results of that as cast CeMg_ (11) Ni and ball-milled CeMg_ (11) Ni + x% Ni (x = 0, 50, 100 and 200, mass fraction) composites were investigated. phase of CeMg_ (11) Ni + x% Ni composite can be obtained by ball-milling, and the discharge capacity of the ball-milled CeMg_ (11) Ni + x% Ni composites are largely greatly dependent on the amount of Ni introduced during milling. The CeMg_ (11) Ni + 200% Ni composite after 90 h ball-milling was found to exhibit a large discharge capacity of about 1 012 mAh / g at 303 K, and it also shows better charge-discharge cycling stability than those with lower This remarkable improvement in electrochemical properties of the ball-milled composites seems to be attributed to the formation of an (amorphous) composite as well as the improvement of the surface state of the ball-milled particles.