Lian Gao

The surface decoration techniques, such as incising-filling, glaze spraying, wood firing, and secondary low-temperature refiring, etc., have been widely used for traditional potteries, such as Jianshui purple pottery. These surface modifications are mainly for artistic expression, whereas functional surface modification has barely been reported. The development of novel coating materials and processes is an alternative path for the innovation of traditional pottery. However, the surface functional materials often peel or detach from the pottery body after high-temperature sintering. It is thus imperative to develop coating materials and processes with robust adhesion and accommodation for secondary functional materials. Through the screening of different ZrO(OH)₂ sols and coating processes, the coating of ZrO(OH)₂ sol on the 800 °C baked Jianshui purple pottery achieved uniform and tight surface coating. Reducing the colloidal particle size and particle concentration in the sol, as well as Y³⁺ doping, is also conductive to the structural stability of the coatings. Additional loading of silver nanoparticles onto the ZrO₂ coating layer effectively endows the pottery with antibacterial performance. The coated samples loaded with silver nanoparticles exhibited an antibacterial rate of 32.7% after accelerated desorption, demonstrating potential for functional pottery applications.

A free‐standing film of manganese oxide/poly(3,4‐ethylenedioxythiophene):poly (styrene sulfonate)/ carbon nanotubes (MnO ₂ /PEDOT:PSS/CNTs) is obtained and directly applied as self‐supporting electrode of supercapacitors. CNTs (modified by ionic liquid) are homogeneously wrapped by conducting polymer PEDOT:PSS. The presence of PEDOT:PSS prevents ultrathin MnO ₂ nanosheets from restacking as well as promotes them vertical growth and uniform distribution on the surface of PEDOT:PSS/CNTs. The MnO ₂ /PEDOT:PSS/CNTs hybrid electrode which possesses coaxial nanocable structure exhibits significant improvement both in specific capacitance and conductivity compared with CNTs or MnO ₂ /CNTs electrodes. This specific hybrid structure greatly accelerates electrons transport. The specific capacitance of MnO ₂ /PEDOT:PSS/CNTs electrode is 533 Fcm ⁻³ at the current density of 1 mAcm ⁻² , while the specific capacitance values of CNTs and MnO ₂ /CNTs electrodes at the same current density only show 15 and 150 Fcm ⁻³ , respectively. The as‐fabricated MnO ₂ /PEDOT:PSS/CNTs hybrid film also exhibits excellent rate capability and cycle stability. For example, the hybrid film shows a specific capacitance of 265 Fcm ⁻³ at current density of 20 mAcm ⁻² , and the high capacitance retention ratio of 129% is achieved after 20000 cycles. Due to its excellent electrochemical properties and good flexibility, MnO ₂ /PEDOT:PSS/CNTs self‐supporting electrode presents promising applications in flexible supercapacitors.