Crystallization, microstructure and energy storage behavior of borate glass–ceramics

Achieving Superior Energy Storage Properties and Ultrafast Discharge Speed in Environment-Friendly Niobate-Based Glass Ceramics

“…37 The details about E a can be found elsewhere. 29 It is observed from Figure 4c that, with the increase of temperature, the relaxation frequency corresponding to the maximum value of −Z″ increases. All calculated E a values and the fitting results are in Figure 4d.…”

“…In general, the activation energy ( E a ) of the relaxation procedure is investigated by the Arrhenius relationship . The details about E a can be found elsewhere . It is observed from Figure c that, with the increase of temperature, the relaxation frequency corresponding to the maximum value of −Z″ increases.…”

“…Apart from the two main types of glass ceramics discussed above, another borate glass ceramic was also investigated. Jiang et al 29 studied BaO−SrO−Nb 2 O 5 −B 2 O 3 −P 2 O 5 −K 2 O glass ceramics and found that the dielectric constant kept increasing with increasing crystalline temperatures, while the breakdown strength first increased and then decreased. Despite the many endeavors that have been made to optimize the energy-storage properties of glass ceramics, the breakdown strength and actual discharge density for most of them are still less than 2000 kV/cm and 1 J/cm 3 , respectively, which restricts practical applications.…”

Influences of crystallization temperature on the structure, dielectric, and energy storage characteristics of KBaSrNb5O15‐based glass–ceramics

“…By changing the temperature and time of crystallization, the type and content of precipitated crystal phases, as well as the microstructure and grain size, can be adjusted. [17][18][19][20][21] All these factors will directly affect the properties of dielectric, ferroelectric, and energy storage in glass-ceramics. For example, it is found that the dielectric breakdown strength (BDS) and permittivity can be optimized by adjusting the crystallization temperature in SrO-BaO-Nb 2 O 5 -B 2 O 3 glass-ceramics.…”

“…Generally, the crystallization temperature plays an important role in developing glass–ceramic materials. By changing the temperature and time of crystallization, the type and content of precipitated crystal phases, as well as the microstructure and grain size, can be adjusted 17–21 . All these factors will directly affect the properties of dielectric, ferroelectric, and energy storage in glass–ceramics.…”