Journal Article Na+ diffusion kinetics in nanoporous metal-hexacyanoferrates

Takachi, Masamitsu  ,  Fukuzumi, Yuya  ,  Moritomo, Yutaka

45 ( 2 )  , pp.458 - 461 , 2016-01 , Royal Society of Chemistry
Metal-hexacyanoferrates (metal-HCFs) are promising candidates for cathode materials of sodium-ion secondary batteries (SIBs). Here, we systematically investigated Na+ diffusion constants (D) and the activation energies (Ea) of metal-HCFs against the framework size (= a/2). We found that the magnitude of D (Ea) systematically increases (decreases) with increases in a, indicating that steric hindrance plays a dominant role in Na+ diffusion.

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