Published 2009 | Version v1
Miscellaneous Open

The effect of high charging rates activation on the specific discharge capacity and efficiency of a negative electrode based on a LaMgAlMnCoNi alloy

Creators

  • 1. Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

Description

A nickel-metal hydride (Ni-MH) rechargeable battery has been prepared using a La0.7Mg0.3Al0.3Mn0.4Co0.5Ni3.8 alloy as the negative electrode. The maximum discharge capacity of the La0.7Mg0.3Al0.3Mn0.4Co0.5Ni3.8 alloy has been determined (350 mAh/g). Using a high starting charging rate (2857 mAg-1) an efficiency of 49% has been achieved in the 4th cycle. The alloy and powders have been characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction (XRD). (author)

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Additional details

Publishing Information

Imprint Pagination
6 p.
Report number
INIS-BR--16568

Conference

Title
7. International latin-american conference on powder technology
Acronym
PTECH 2009
Dates
8-10 Nov 2009
Place
Atibaia, SP (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
47111677
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ELECTRIC BATTERIES; ELECTRIC DISCHARGES; ELECTRODES; IMPEDANCE; MICROANALYSIS; NICKEL HYDRIDES; RARE EARTHS; SCANNING ELECTRON MICROSCOPY; SPECTRA; TRANSITION ELEMENTS; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; ELECTROCHEMICAL CELLS; ELECTRON MICROSCOPY; ELEMENTS; ENERGY STORAGE SYSTEMS; ENERGY SYSTEMS; HYDRIDES; HYDROGEN COMPOUNDS; METALS; MICROSCOPY; NICKEL COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS