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Zinc hexacyanocobaltate (ZnHCCo) is a Prussian blue analog. It could be used as a new cathode material for rechargeable LIBs used in grid-scale energy storage and conversion systems via the room temperature co-precipitation process using cost-efficient precursors, which are easily upscaled. Benefiting from the concomitant surface- and diffusion-controlled Li-ion storage, a highly reversible capacity of 121.5 mAh g?1 at 1.25 C and a 96.5% Coulombic efficiency were obtained during the charge/discharge cycling test[1].

[1] Kaiqiang Zhang. “A Hybrid Energy Storage Mechanism of Zinc Hexacyanocobaltate-Based Metal–Organic Framework Endowing Stationary and High-Performance Lithium-Ion Storage.” Electronic Materials Letters 15 4 (2019): 444–453.