Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290529 | Journal of Power Sources | 2010 | 5 Pages |
Abstract
LixMnO2 (x = 0.302) was synthesized by chemical lithiation, using a formaldehyde reducing agent and a LiOH lithium source in an aqueous media. The electrochemical properties and structural stability of the product were characterized by X-ray diffraction and charge–discharge measurements. The chemically lithiated LixMnO2 had a first charge and discharge capacity of 86.2 and 265 mAh/g, respectively, with good cycling behavior. Based on the electrochemical results of the first charge, a two-step mechanism of LixMnO2 lithiation is proposed. γ-MnO2 is first oxidized by formaldehyde, and then Li diffuses into the γ-MnO2 lattice.
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Authors
Won Il Jung, Miki Nagao, Cédric Pitteloud, Atsuo Yamada, Ryoji Kanno,