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Charge ordering in charge-compensated Na0.41CoO2 by oxonium ions

机译:氧补偿离子在带电荷补偿的Na0.41CoO2中的电荷排序

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Charge ordering behavior is observed in the crystal prepared through the immersion of the Na0.41CoO2 crystal in distilled water. Discovery of the charge ordering in the crystal with Na content less than 0.5 indicates that the immersion in water brings about the reduction of the Na0.41CoO2. The formal valence of Co changes from +3.59 estimated from the Na content to +3.50, the same as that in Na0.5CoO2. The charge compensation is confirmed to arise from the intercalation of the oxonium ions as Occurred in the superconducting sodium cobalt oxide bilayer-hydrate [K. Takada, et al. J. Mater. Chem. 14 (2004) 1448]. The charge ordering is the same as that observed in Na0.5CoO2. It suggests that the Co valence of +3.50 is necessary for the charge ordering. (c) 2006 Elsevier Ltd. All rights reserved.
机译:通过将Na0.41CoO2晶体浸入蒸馏水中制备的晶体中观察到电荷有序行为。在Na含量小于0.5的晶体中发现电荷有序性表明,将其浸入水中会导致Na0.41CoO2的减少。 Co的形式价从Na含量的+3.59变为+3.50,与Na0.5CoO2中的相同。可以确定,电荷补偿是由于在超导氧化钴钴双层水合物[K.]中发生的离子的嵌入而引起的。高田等。 J. Mater。化学14(2004)1448]。电荷顺序与Na0.5CoO2中观察到的顺序相同。这表明对于电荷排序,+ 3.50的共价是必要的。 (c)2006 Elsevier Ltd.保留所有权利。

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