Hybrid metal nickel/cobalt hexacyanoferrate (Ni/CoHCNFe) has been prepared in the form of thin films on electrode surfaces and as bulk precipitates (powders). This heteronuclear metal hexacyanoferrate cannot be considered a simple mixture of hexacyanoferrates of nickel and cobalt, and it shows different voltammetric and electrochromic characteristics in comparison to the respective single-metal hexacyanoferrates. On the basis of X-ray absorption, elemental analysis, and comparative voltammetric measurements, the following approximate formulas, K2NiΠ5CoΠ5[FeΠ(CN)]6 and KNi5.5CoΠ5[FeΠ(CN)6], have been proposed for the predominant reduced and oxidized forms of hybrid Ni/CoHCNFe. The results are consistent with the existence of linear units -FeCN-Co-NC-Fe-CN-Ni- in the structure. Hybrid nickel/cobalt hexacyanoferrate film has unique electrochromic properties, and it shows lone-term stabilitv and oromisine charee storase/transoort capabilities durins voltammetric nolential cvclins. © 1999 The Electrochemical Society. All rights reserved.
Kulesza P.J., Malik M.A., Skorek J., Miecznikowski K., Zamponi S., Berrettoni M., et al. (1999). Hybrid metal cyanometallates electrochemical charging and spectrochemical identity of heteronuclear nickel/cobalt hexacyanoferrate. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 146(10), 3757-3761 [10.1149/1.1392545].
Hybrid metal cyanometallates electrochemical charging and spectrochemical identity of heteronuclear nickel/cobalt hexacyanoferrate
Giorgetti M.;
1999
Abstract
Hybrid metal nickel/cobalt hexacyanoferrate (Ni/CoHCNFe) has been prepared in the form of thin films on electrode surfaces and as bulk precipitates (powders). This heteronuclear metal hexacyanoferrate cannot be considered a simple mixture of hexacyanoferrates of nickel and cobalt, and it shows different voltammetric and electrochromic characteristics in comparison to the respective single-metal hexacyanoferrates. On the basis of X-ray absorption, elemental analysis, and comparative voltammetric measurements, the following approximate formulas, K2NiΠ5CoΠ5[FeΠ(CN)]6 and KNi5.5CoΠ5[FeΠ(CN)6], have been proposed for the predominant reduced and oxidized forms of hybrid Ni/CoHCNFe. The results are consistent with the existence of linear units -FeCN-Co-NC-Fe-CN-Ni- in the structure. Hybrid nickel/cobalt hexacyanoferrate film has unique electrochromic properties, and it shows lone-term stabilitv and oromisine charee storase/transoort capabilities durins voltammetric nolential cvclins. © 1999 The Electrochemical Society. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
