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The cycle life of 50/50 TiFe alloy electrodes for charge storage (Articolo in rivista)
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- The cycle life of 50/50 TiFe alloy electrodes for charge storage (Articolo in rivista) (literal)
- Anno
- 2001-01-01T00:00:00+01:00 (literal)
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Comisso N., Davolio G., Soragni E., Mengoli G. (2001)
The cycle life of 50/50 TiFe alloy electrodes for charge storage
in Journal of electroanalytical chemistry and interfacial electrochemistry
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- Comisso N., Davolio G., Soragni E., Mengoli G. (literal)
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- The evolution of charge capacity with cycle number into 50/50 TiFe intermetallic compound (IMC) has been investigated.
It has been found that in lithiated KOH electrolyte the passivation is slowed but not eliminated.
Although the main charge storage route is again hydrogen insertion into TiFe, the onset of passivation of the IMC is significantly delayed by the presence of Fe.
Mechanical mixing of the IMC with minor amounts of Ni powder results in better cycle life, probably due to the reduction of passivating oxides.
The best improvement of the cycle life was obtained from TiFe+Fe composite electrodes. (literal)
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- Comisso e Mengoli: CNR IENI, Corso Stati Uniti 4, 35127 Padova Italia;
Davolio e Soragni: Università di Modena, Dipartimento di Chimica, via Campi 183,41100 Modena Italia. (literal)
- Titolo
- The cycle life of 50/50 TiFe alloy electrodes for charge storage (literal)
- Abstract
- The evolution of charge capacity with cycle number into 50/50 TiFe intermetallic compound (IMC) has been investigated. It has been found that in lithiated KOH electrolyte the passivation of a TiFe pressed powder electrode is slowed but not eliminated. Mechanical mixing of the IMC with minor amounts of Ni powder results in better cycle life, probably due to the reduction of passivating oxides, electrocatalytically induced by finely divided Ni. However the best improvement of cycle life was obtained from TiFe+Fe composite electrodes. Although the main charge storage route is again hydrogen insertion into TiFe, the onset of passivation of the IMC is significantly delayed by the presence of Fe. (literal)
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