Porous polypyrrole/Ti3C2Tx/alginate aerogels prepared by sacrificial template strategy as electrode materials in symmetric supercapacitors

Light weight and porous polypyrrole (PPy)/Ti 3 C 2 T x /alginate (Alg) aerogels were prepared via a sacrificial template strategy, which were used as the electrode material in symmetric supercapacitors . PPy and Ti 3 C 2 T x endow the aerogels with high specific capacitance, and the porous structure is in favor of the transfer of electrons and electrolyte ions . The aerogels display high energy density (64 μWh cm −2 ) and power density (0.97 μW cm −2 ) when used in symmetric supercapacitors. In addition, the aerogels also display high cyclic stability owing to the inhibited volume change of PPy during the repeated charge/discharge process.