"A Low-Strain Potassium-Rich Prussian Blue Analogue Cathode for High Po" by Lin Li, Zhe Hu et al.
Abstract Most of the cathode materials for potassium ion batteries (PIBs) suffer from poor structural stability due to the large ionic radius of K , resulting in poor cycling stability. Here we report a low-strain potassium-rich K Ni[Fe(CN) ] ⋅0.49 H O (KNiHCF) as a cathode material for PIBs. The as-prepared KNiHCF cathode can deliver reversible discharge capacity of 62.8 mAh g at 100 mA g , with a high discharge voltage of 3.82 V. It can also achieve a superior rate performance of 45.8 mAh g at 5000 mA g , with a capacity retention of 88.6 % after 100 cycles. The superior performance of ...
Source: uow.edu.au