Scheme 1. Schematic of the growth process for MXene/AAC hybrids
Briefly, the aqueous dispersions of MXene and acidified activated carbon particles were mixed at various weight ratios of MXene/acidified activated carbon (1:1, 2:1, 3:1 and 4:1 and 6:1) and then further sonicated for about 30 min to obtain a homogeneoussolution. The mixed solution was vacuum-filtered and thenvacuum-dried at 60 ℃ for 6 h to obtain free-standing, flexible film with a diameter of 40 mmm. The films prepared with MXene/acidified activated carbon (1:1, 2:1, 3:1 and 5:1 and were marked as MXene/AAC-1:1, MXene/AAC-2:1, MXene/AAC-3:1 and MXene/AAC-5:1, respectively. For comparison, neat MXene films were fabricated with the same procedures described above and the detailed procedures were discribed in Scheme 1.