To improve the valence of metal ions in PBA materials, precursors prepared by co-precipitation method and hydrothermal method are used to synthesis KxCo1.5-0.5xFe(CN)6 through further chemical oxidation.  The K0.5Co1.2Fe(CN)6·2H2O/rGO anode prepared with 2 h hydrothermal time and further chemical oxidation, named as KCoHCP-H2-EK/rGO, exhibits a super electrochemical performance, delivering initial charge/discharge capacities of 846.7/1445.0 mAh·g-1, and a capacity retention of 58.2% after 100 cycles at a current density of 100 mA·g-1. 
THERM
To improve the valence of metal ions in PBA materials, precursors prepared by co-precipitation method and hydrothermal method are used to synthesis KxCo1.5-0.5xFe(CN)6 through further chemical oxidation.  The K0.5Co1.2Fe(CN)6·2H2O/rGO anode prepared with 2 h hydrothermal time and further chemical oxidation, named as KCoHCP-H2-EK/rGO, exhibits a super electrochemical performance, delivering initial charge/discharge capacities of 846.7/1445.0 mAh·g-1, and a capacity retention of 58.2% after 100 cycles at a current density of 100 mA·g-1. 
THERM
To improve the valence of metal ions in PBA materials, precursors prepared by co-precipitation method and hydrothermal method are used to synthesis KxCo1.5-0.5xFe(CN)6 through further chemical oxidation.  The K0.5Co1.2Fe(CN)6·2H2O/rGO anode prepared with 2 h hydrothermal time and further chemical oxidation, named as KCoHCP-H2-EK/rGO, exhibits a super electrochemical performance, delivering initial charge/discharge capacities of 846.7/1445.0 mAh·g-1, and a capacity retention of 58.2% after 100 cycles at a current density of 100 mA·g-1. 
THERM
To improve the valence of metal ions in PBA materials, precursors prepared by co-precipitation method and hydrothermal method are used to synthesis KxCo1.5-0.5xFe(CN)6 through further chemical oxidation.  The K0.5Co1.2Fe(CN)6·2H2O/rGO anode prepared with 2 h hydrothermal time and further chemical oxidation, named as KCoHCP-H2-EK/rGO, exhibits a super electrochemical performance, delivering initial charge/discharge capacities of 846.7/1445.0 mAh·g-1, and a capacity retention of 58.2% after 100 cycles at a current density of 100 mA·g-1. 
THERM