The effects of preparation condition and dopant on the electrochemical property for fe-substituted Li2MnO3

The specific capacity of Fe-substituted Li2MnO3 (Li1.2Fe0.4Mn0.4O2) was improved by adjusting the preparation temperature of Fe-Mn co-precipitate below RT in order to suppress the spinel ferrite formation, which hinders the formation of homogeneous and reactive precursor. The degradation of discharg...

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Veröffentlicht in:	Journal of power sources 2005-08, Vol.146 (1-2), p.287-293
Hauptverfasser:	TABUCHI, Mitsuharu, NAKASHIMA, Akiko, ADO, Kazuaki, SAKAEBE, Hikari, KOBAYASHI, Hironori, KAGEYAMA, Hiroyuki, TATSUMI, Kuniaki, KOBAYASHI, Yo, SEKI, Shiro, YAMANAKA, Atsushi
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
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Zusammenfassung:	The specific capacity of Fe-substituted Li2MnO3 (Li1.2Fe0.4Mn0.4O2) was improved by adjusting the preparation temperature of Fe-Mn co-precipitate below RT in order to suppress the spinel ferrite formation, which hinders the formation of homogeneous and reactive precursor. The degradation of discharge capacity with cycle could be suppressed by nominal 5% Al, Ni and Co doping. This means that Fe-substituted Li2MnO3 will be considered to be one of the near future positive electrodes for practical use by careful optimization of its preparation condition and chemical composition.
ISSN:	0378-7753 1873-2755
DOI:	10.1016/j.jpowsour.2005.03.032