A New Insight on the Preparation of Stabilized Alpha-Nickel Hydroxide Nanoparticles


Autoria(s): ROCHA, Michele A.; WINNISCHOFER, Herbert; ARAKI, Koiti; ANAISSI, Fauze J.; Toma, Henrique Eisi
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2011

Resumo

Nickel hydroxide can provide an outstanding cathode material in alkaline secondary batteries, however the progressive decrease of the charge capacity as a function of the number of oxidation/reduction cycles is a challenging problem to be solved. New improvements on the electrochemical properties of electrode materials can be achieved by exploiting the much better performance of alpha-nickel hydroxide. Such materials were obtained in a stable form by sol-gel method and characterized by thermogravimetric analyses, UV-Vis spectroscopy, X-ray diffractometry, scanning and transmission electron microscopy, cyclic voltammetry and electrochemical quartz crystal microbalance techniques. The results revealed not only the formation of the alpha-Ni(OH)(2) phase, but also a much better electrochemical reversibility and stability as compared with similar materials obtained by electrochemical precipitation method.

Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Conselho Nacional de Desenvolvimento Cientifico e Technologico (CNPq)

Identificador

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, n.5, p.3985-3996, 2011

1533-4880

http://producao.usp.br/handle/BDPI/31371

10.1166/jnn.2011.3872

http://dx.doi.org/10.1166/jnn.2011.3872

Idioma(s)

eng

Publicador

AMER SCIENTIFIC PUBLISHERS

Relação

Journal of Nanoscience and Nanotechnology

Direitos

closedAccess

Copyright AMER SCIENTIFIC PUBLISHERS

Palavras-Chave #Nickel Hydroxide #Nanoparticles #Sol-Gel #Electrochemistry #QUARTZ-CRYSTAL MICROBALANCE #SOL-GEL PROCESS #ELECTROCHEMICAL PERFORMANCE #ACTIVE MATERIAL #RECHARGEABLE BATTERIES #ELECTRODE MATERIALS #POSITIVE-ELECTRODE #OXYGEN EVOLUTION #REDOX BEHAVIOR #PHASE #Chemistry, Multidisciplinary #Nanoscience & Nanotechnology #Materials Science, Multidisciplinary #Physics, Applied #Physics, Condensed Matter
Tipo

article

original article

publishedVersion