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The relation between structural features and electrochemical activity of MnO2 nanoparticles synthesized from a polyol-made Mn 3O4 precursor
(2013-07-01)
A simple hybrid synthesis processing method was developed to synthesize γ-MnO2 nanocrystalline particles. The polyol method was modified by the addition of nitric acid in order to allow the synthesizing of single-phase ...
The relation between structural features and electrochemical activity of MnO2 nanoparticles synthesized from a polyol-made Mn 3O4 precursor
(2013-07-01)
A simple hybrid synthesis processing method was developed to synthesize γ-MnO2 nanocrystalline particles. The polyol method was modified by the addition of nitric acid in order to allow the synthesizing of single-phase ...
Oxygen reduction reaction catalyzed by epsilon-MnO2: Influence of the crystalline structure on the reaction mechanism
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
The oxygen reduction reaction (ORR) was studied in KOH electrolyte on carbon supported epsilon-manganese dioxide (epsilon-MnO2/C). The epsilon-MnO2/C catalyst was prepared via thermal decomposition of manganese nitrate and ...
Improved Electrochemical Performance of NCM Cathode Materials Based on the Modification of the Salt Content in the Electrolyte
(Jeffrey W. Fergus, Professor Materials Research and Education Center, 2019-10)
In this work, NCM cathode materials, for Li-ion batteries, weresynthesized via a solid-state reaction routine, in which manganese(IV) dioxide, nickel (II) oxide, cobalt (II) hydroxide and lithiumhydroxide monohydrate were ...
Selenium reaction mechanism in manganese electrodeposition process
(Elsevier, 2017)
A difficulty for the electrochemical deposition is the high negative electrolytic potential of the Mn+2/Mn° pair in aqueous solutions producing water reduction at any pH value; to resolve this problem it is necessary to ...
Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia de Materiais, 2019-11-22)
Neste trabalho, filmes finos de CeO2 dopados com Eu3+, Tb3+ e Tm3+ nas proporções de 2 e 4 %mol foram obtidos por spin coating e calcinados em 700 °C. Os filmes foram caracterizados pelas técnicas de DRX, FEG, MFA e UV-Vis. ...
Síntesis de micropartículas multirramificadas de óxidos de metales de transición
(Departamento de QuímicaUniversidad Nacional de Colombia - Sede Bogotá, 2020-01-21)
El control de la morfología, durante la síntesis de estructuras sólidas, se ha convertido en uno de los objetivos de estudio más importantes en el campo del diseño de nuevos materiales. Al modificar la forma y tamaño de ...
Utilization of Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds as low-cost biosorbents for removal of basic fuchsin
(Corporación Universidad de la Costa, 2020)