Synthesis and characterization of stable Co and Cd doped nickel hydroxide nanoparticles for electrochemical applications
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2009
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Resumo |
The present paper describes the physical-chemical characterization and electrochemical behavior of a new nanomaterial formed by the addition of cadmium and cobalt atoms into the structure of nickel hydroxide nanoparticles, these ones synthesized by an easy sonochemical method. Particles of about 5 nm diameter were obtained and characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction and Raman spectroscopy. Different nickel hydroxide nanoparticles were immobilized onto transparent conducting substrates by using electrostatic layer-by-layer providing thin films at the nanoscale and the electrochemical behavior was investigated. The formation of a mixed hydroxide was corroborated by observation of very interesting properties as redox potential shifting to less positive potentials and high stability when submitted to long electrochemical cycling or high times of ultrasonic synthesis, suggesting practical applications. (C) 2008 Elsevier B.V. All rights reserved. FAPESP[03/10015-3] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Instituto do Milenio de Materiais Complexos Instituto do Milenio de Materiais Complexos CNPq[152312/2007-2] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
Identificador |
ULTRASONICS SONOCHEMISTRY, v.16, n.1, p.35-40, 2009 1350-4177 http://producao.usp.br/handle/BDPI/31245 10.1016/j.ultsonch.2008.07.006 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Ultrasonics Sonochemistry |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Sonochemical synthesis #Nanoparticles #Nickel hydroxide #Additives #ELECTROCHROMIC DEVICES #SONOCHEMICAL METHOD #ELECTRODES #BETA-NI(OH)(2) #ADDITIVES #NI(OH)(2) #OXIDATION #BEHAVIOR #CELLS #Acoustics #Chemistry, Multidisciplinary |
Tipo |
article original article publishedVersion |