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.
Hybrid metal cyanometallates electrochemical charging and spectrochemical identity of heteronuclear nickel/cobalt hexacyanoferrate / Kulesza P.J.; Malik M.A.; Skorek J.; Miecznikowski K.; Zamponi S.; Berrettoni M.; Giorgetti M.; Marassi R.. - In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - ISSN 0013-4651. - STAMPA. - 146:10(1999), pp. 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.
