Development of a novel metal hydride-air secondary battery

A laboratory metal hydride/air cell was evaluated. Charging was via a bifunctional air gas-diffusion electrode. Mixed nickel and cobalt oxides, supported on carbon black and activated carbon, were used as catalysts in this electrode. At 30 mA cm exp -2 in 6 M KOH, the air electrode potentials were -...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of applied electrochemistry 1998-05, Vol.28 (5), p.545-549
Hauptverfasser:	GAMBURZEV, S, ZHANG, W, VELEV, O. A, SRINIVASAN, S, APPLEBY, A. J, VISINTIN, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Exact sciences and technology
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A laboratory metal hydride/air cell was evaluated. Charging was via a bifunctional air gas-diffusion electrode. Mixed nickel and cobalt oxides, supported on carbon black and activated carbon, were used as catalysts in this electrode. At 30 mA cm exp -2 in 6 M KOH, the air electrode potentials were -0.2 V (oxygen reduction) and + 0.65 V (oxygen evolution) vs Hg/HgO. The laboratory cell was cycled for 50 cycles at the C/2 rate (10 mA cm exp -2 ). The average discharge/charge voltages of the cell were 0.65 and 1.6 V, respectively. The initial capacity of the metal hydride electrode decreased by about 15% after 50 cycles.
ISSN:	0021-891X 1572-8838
DOI:	10.1023/A:1003229514453