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Supercapacitors are considered as promising energy storage devices due to their high power density, fast charging/discharging process and long cycle life. The synthesis of Prussian blue analogues (PBAs) by the traditional co-precipitation method faces the problems of wastewater treatment, poor material reusability and low space utilization rate. Herein, an efficient and simple solid-state synthesis protocol is used to prepare diminutively granular and highly crystalline manganese hexacyanoferrate (MnHCF). MnHCF exhibits excellent electrochemical properties with the specific capacitance of 202.8 F g−1 at a current density of 1 A g−1 in a neutral electrolyte. At the same time, MnHCF has good cycle stability, which could maintain 95.63% after 8000 charge–discharge cycles. The maximum energy density of the two-electrode system with MnHCF as a positive electrode and YP-50F as a negative electrode is 18.89 W h kg−1 at 981.25 W kg−1 and a maximum power density of 7184.73 W kg−1 at 7.52 W h kg−1. The outstanding electrochemical properties can be attributed to smaller particle size and higher crystallinity to achieve faster ion diffusion and greater diffusion depth. Therefore, adopting a solid-state synthesis protocol is a promising approach to achieve low-cost and large-scale production of PBAs. [ABSTRACT FROM AUTHOR]

Zirconia implants have great application prospects due to their favorable biocompatibility and esthetic properties. However, the percentage of osseointegration of zirconia implants is lower than that of titanium implants. This study, structures bioactive surfaces on zirconia using a femtosecond laser combined with hydroxyapatite (HA) crystals and evaluates the surface morphology, functional groups, crystal phase, mechanical performance, and cell response. The results revealed that calcium phosphate deposition coincided with the establishment of micro‐grooves on the zirconia surface. The crystal composition and flexural strength of zirconia showed no significant changes after the surface treatment. Furthermore, the modified surface promoted cell adhesion and proliferation through adjustments in cell morphology. The findings suggest that the combination of femtosecond laser and HA crystals offers a clean, rapid, and controllable approach to preparing bioactive surfaces for zirconia implants. [ABSTRACT FROM AUTHOR]