リチウム 2次電池用ナシコン正極におけるInductive効果

岡田 重人, 高田 智雄, 江頭 港, 山木 準一

研究成果: Contribution to journalArticle

抄録

We carried out redox-couple and counter-cation exchange in NASICON-type M_2(XO_4)_3 (M: Fe and Al; X: S, Mo and W) to control the cathode performance. The Fe^<3+>/Fe^<2+> redox potential in NASICON matrix is changed by the local crystalline field at the iron resulting from polarization of oxygen towards the counter cation in the polyanionic complex. It is confirmed by ^<57>Fe Mossbauer resonance, Fe-2p XPS, Mo K-XAFS and electrochemical measurements. This inductive effect in NASICON matrix is a significant material control technique for cathode design. We also found a promising anode candidate by ion exchange of Fe by Al in Fe_2(MoO_4)_3. The reversible capacity of Al_2(MoO_4)_3 reached almost 200mAh/g between 3.5V and 1.2V.
寄稿の翻訳タイトルInductive Effect in NASICON-Type Cathodes for Lithium Secondary Batteries
本文言語日本語
ページ(範囲)81-85
ページ数5
ジャーナルThe Reports of Institute of Advanced Material Study,Kyushu University
13
2
DOI
出版ステータス出版済み - 12 1999

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