2013
DOI: 10.1021/ja312160v
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Abstract: Prussian blue analogues (PBAs) have recently been proposed as electrode materials for low-cost, long-cycle-life, and high-power batteries. However, high-capacity bimetallic examples show poor cycle stability due to surface instabilities of the reduced states. The present work demonstrates that, relative to single-component materials, higher capacity and longer cycle stability are achieved when using Prussian blue analogue core@shell particle heterostructures as the cathode material for Li-ion storage. Particle… Show more

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Cited by 205 publications
(159 citation statements)
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“…The shift of the peak from 7129.32 to 7128.27 eV during Ca‐ion insertion indicates the reduction of Fe 3+ to Fe 2+ . This agrees with the reduction of Fe 3+ observed for CuHCF and NiHCF during Mg insertion 25. In contrast, X‐ray absorption spectra around the Cu K‐edge is mostly unchanged during Ca‐ion insertion, and a pre‐edge peak at about 8986 eV corresponding to Cu 2+ remains for all the samples.…”
supporting
confidence: 86%
“…The shift of the peak from 7129.32 to 7128.27 eV during Ca‐ion insertion indicates the reduction of Fe 3+ to Fe 2+ . This agrees with the reduction of Fe 3+ observed for CuHCF and NiHCF during Mg insertion 25. In contrast, X‐ray absorption spectra around the Cu K‐edge is mostly unchanged during Ca‐ion insertion, and a pre‐edge peak at about 8986 eV corresponding to Cu 2+ remains for all the samples.…”
supporting
confidence: 86%
“…Although the water content varies with the synthesis protocols, complete dehydration in as-synthesized states is generally www.advenergymat.de difficult because of the fast kinetics of the precipitation reaction. [85,86] Water incorporation lowers the amount of redox metal present in the structure and reduces the number of available sites for K ions, limiting the overall performance of the material.…”
Section: Hexacyanometallate Groups (Prussian Blue Analogues)mentioning
confidence: 99%
“…Many reported PBAs exhibit low alkaline content [92,[94][95][96][97][98]. Furthermore, although alkaline-rich PBAs were synthesized [87,[99][100][101], the electrochemical process of these PBAs is limited by one-electron reaction due to the highest oxidation state of transition metal in the large interstitial sites, such as Na 1.4 4− oxidation could be effectively suppressed and the Na content can reach as high as 1.63 per formula unit in the presence of ascorbic acid (VC) or under a nitrogen environment during the synthesis process [107].…”
Section: Prussian Blue Analogues (Pbas)mentioning
confidence: 99%