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Mg2+ intercalation/deintercalation is achieved by using aqueous electrolytes and Prussian blue analog electrodes. Ex situ X-ray diffraction evidenced the solid solution process of Mg2+ intercalation/deintercalation, while the 57Fe Mössbauer spectroscopy and X-ray absorption near edge structure revealed redox of both Cu and Fe.
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Mizuno et al. (2013) studied this question.
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