Table 4. Filler materials for biodegradable dielectric composites [60-62]

Fillers Static dielectric constant Biodegradation mechanism
SiO2 3.9 SiO2+2H2O→Si(OH)4[60]
MoS2 2.6~2.9 2MoS2+7O2→2MoO3+4SO2 MoS2+9/2O2+3H2O→MoO42−+2So42−+6H+[61]
ZnO 10.4 ZnO+2H2O→Zn(OH)2 ZnO+H2O→Zn2++2OH [62]