Elaboration and characterization of magnesium-substituted La5Ni19 hydride forming alloys as active materials for negative electrode in Ni-MH battery

The charge/discharge properties of commercial metal hydride alloy powder (MmNi3.81Mn0.41Al0.19Co0.76) is improved and modified by electroless plating nickel. The effect of concentration of reducing agent (Cr), concentration of complex agent (Cc), reaction temperature (T), reaction time (t), and the amounts of MH powder per volume (CMH) on the utilization of the modified MH alloy used as the negative electrode of Ni/MH battery is systematically studied. The utilization of modified MH alloy is mainly affected by Cr, Cc and t. The utilizations of MH alloys modified with condtions of T = 70 oC, t = 90 min, Cr = 20 g l-1, Cc = 20 g l-1 and CMH = 20 g l-1, respectively, are obtained to be 92.3, 64.7 and 23.6% at discharging rate of 1, 4, and 10 C. The utilizations of modified MH alloy are increased by 15.5, 45.6 and 19.8% compared with the pristine MH alloy for discharging rates of 1, 4 and 10 C, respectively.

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Characterization of active materials for lithium ion batteries using scanning probe techniques

10.22443/rms.mmc2021.154 ◽

2021 ◽

Author(s):

Andreas Bund

Keyword(s):

Lithium Ion Batteries ◽

Lithium Ion ◽

Scanning Probe ◽

Active Materials

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Micro-alloyed Mg2Ni for better performance as negative electrode of Ni-MH battery and hydrogen storage

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2016.10.128 ◽

2017 ◽

Vol 42 (8) ◽

pp. 5220-5226 ◽

Cited By ~ 17

Author(s):

Sanjay Kumar ◽

H. Miyaoka ◽

T. Ichikawa ◽

G.K. Dey ◽

Y. Kojima

Keyword(s):

Hydrogen Storage ◽

Negative Electrode ◽

Mh Battery

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A NON-NUCLEOTIDE POLYMER FOUND IN THE DNA OF THE SAND DOLLAR, ECHINARACHNIUS PARMA: II. PRELIMINARY CHARACTERIZATION

Canadian Journal of Biochemistry ◽

10.1139/o67-031 ◽

1967 ◽

Vol 45 (2) ◽

pp. 281-287 ◽

Cited By ~ 2

Author(s):

Herbert S. Rosenkranz

Keyword(s):

Buoyant Density ◽

Sedimentation Coefficient ◽

Negative Electrode ◽

Cesium Chloride ◽

Amino Sugar ◽

Electrophoretic Analysis ◽

Positive Test ◽

Preliminary Characterization ◽

Acid Hydrolysate

A preliminary characterization of the non-nucleotidic component present in the DNA of Echinarachnius parma was undertaken. This material has an extremely high sedimentation coefficient (907 S). It contains no deoxyribose and presumably no ribose. After acid hydrolysis it was strongly ninhydrin-positive and also gave positive tests for reducing sugars as well as a slightly positive test for amino sugars. Upon electrophoretic analysis of an acid hydrolysate, three ninhydrinpositive spots were detected. One of these migrated to the negative electrode with a mobility identical with that of galactosamine, the other migrated to the positive electrode, and the third was neutral at pH 6.3. The spot with a mobility identical with that of galactosamine also gave a positive test for amino sugar. The material was not attacked by α-amylase. However, digestion with a crude trypsin preparation resulted in loss of the banding property in gradients of cesium chloride. Exposure to purified trypsin did not completely digest it, but caused an increase in buoyant density.

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