Raman and X‐Ray Photoelectron Spectroscopic Investigations on a New Electrode Material for Nickel‐Metal Hydride Batteries: MgNi‐Graphite Composites Prepared by Ballmilling

1999 ◽  
Vol 146 (5) ◽  
pp. 1659-1663 ◽  
Author(s):  
Chiaki Iwakura ◽  
Hiroshi Inoue ◽  
Shu G. Zhang ◽  
Shinji Nohara ◽  
Kenshi Yorimitsu ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Electrode Material ◽  
Nickel Metal ◽  
Nickel Metal Hydride ◽  
X Ray ◽  
Spectroscopic Investigations ◽  
Graphite Composites

scholarly journals Recovery Of Electrodic Powder From Spent Nickel-Metal Hydride Batteries (NiMH)

2015 ◽  
Vol 60 (2) ◽  
pp. 1139-1143 ◽  
Author(s):  
S.M. Shin ◽  
D.J. Shin ◽  
G.J. Jung ◽  
Y.H. Kim ◽  
J.P. Wang
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Metal Hydride ◽  
Inert Atmosphere ◽  
X Ray Diffraction ◽  
Recycling Process ◽  
Nickel Metal ◽  
Nickel Metal Hydride ◽  
X Ray ◽  
New Process

Abstract This study was focused on recycling process newly proposed to recover electrodic powder enriched in nickel (Ni) and rare earth elements (La and Ce) from spent nickel-metal hydride batteries (NiMH). In addition, this new process was designed to prevent explosion of batteries during thermal treatment under inert atmosphere. Spent nickel metal hydride batteries were heated over range of 300°C to 600°C for 2 hours and each component was completely separated inside reactor after experiment. Electrodic powder was successfully recovered from bulk components containing several pieces of metals through sieving operation. The electrodic powder obtained was examined by X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) and image of the powder was taken by scanning electron microscopy (SEM). It was finally found that nickel and rare earth elements were mainly recovered to about 45 wt.% and 12 wt.% in electrodic powder, respectively.

Green separation of lanthanum, cerium and nickel from waste nickel metal hydride battery

2021 ◽  
Vol 125 ◽  
pp. 154-162 ◽  
Author(s):  
Silvia J.R. Vargas ◽  
Nicolas Schaeffer ◽  
Jamille C. Souza ◽  
Luis H.M. da Silva ◽  
Maria C. Hespanhol
Keyword(s):  
Metal Hydride ◽  
Nickel Metal ◽  
Nickel Metal Hydride ◽  
Nickel Metal Hydride Battery ◽  
Green Separation ◽  
Hydride Battery
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