Phase structure and electrochemical characteristics of high-pressure sintered La–Mg–Ni-based hydrogen storage alloys

The effect of carbon–polyaniline hybrid coating on high-temperature electrochemical performance of perovskite-type oxide LaFeO3 for MH–Ni batteries

“…The working electrode for electrochemical measurements was prepared by cold-pressing the mixture of 0.15 g perovskite-type oxide LaFeO 3 powders and 0.75 g carbonyl nickel powders into an electrode pellet of 10 mm in diameter under a pressure of 15 MPa. 14 Electrochemical measurements were performed using a DC-5 battery test instrument with an open two-electrode cell. Ni(OH) 2 /NiOOH was used as a counter electrode and 6 mol L −1 KOH solution as an electrolyte.…”

Study on the high-temperature electrochemical performance of perovskite-type oxide LaFeO3 with carbon modification

“…The mixture of perovskite-type oxide LaFeO 3 powders (0.15 g) and carbonyl nickel powders (0.75 g) was cold-pressed to form a negative electrode pellet of 10 mm in diameter under a pressure of 15 MPa as described in the reference [16]. Electrochemical measurements were performed by a DC-5 battery test instrument with an open two-electrode cell.…”

Study on solid solubility of Mg in Pr 3−x Mg x Ni 9 and electrochemical properties of PuNi 3 -type single-phase RE–Mg–Ni (RE = La, Pr, Nd) hydrogen storage alloys

“…Since Kadir et al revealed a new series of REMg 2 Ni 9 (RE = rare earth elements and alkaline earth elements) hydrogen storage alloys with a rhombohedral PuNi 3 -type structure [1], RE-Mg-Ni-based alloys have been extensively studied and considered as the most promising candidate for negative electrode materials of nickel/metal hydride (Ni/MH) secondary batteries [2][3][4][5][6]. PuNi 3 -type structure is constructed by stacking of alternating AB 5 and A 2 B 4 units (Lavestype) in 1:1 ratio [7].…”