MXene / CNT hybrid fuel cell

FIG  . 1  of Pt-the CNT of Ti / . 3 C 2 T X morphology.

FIG  2  Pt / CNT-of Ti . 3 C 2 T X , of Pt / of Ti . 3 C 2 T X , of Pt / C and  Pt / CNT of the CV curve.

Figure  3  Cycling performance of Pt / CNT-Ti 3 C 2 T x (1: 1) .

Fig.  4  Pt / CNT-Ti 3 C 2 T x (1: 1) polarization, power density and stability.

FIG  . 5  MXene the Pt cluster geometry optimization and CNT-MXene on Pt geometry of the clusters.

in conclusion

In summary, this work prepared a composite material of platinum metal and CNT- Ti 3 C 2 T x by a simple chemical method . The CNT- Ti 3 C 2 T x hybrid carrier has a great influence on the electrocatalytic activity and stability of platinum. The mass activity and specific activity of Pt / CNT- Ti 3 C 2 T x (1: 1) are 3.4 and 2.5 times that of Pt / C , respectively . The excellent ORP performance of Pt / CNT- Ti 3 C 2 T x (1: 1) is attributed to the synergistic effect of Ti 3 C 2 T x and CNT . Add toAfter CNT , the O 2 dissociation (1: 1) of  Pt / CNT- Ti 3 C 2 T x becomes easier, and the desorption effect of Pt / C and O atoms on the composite catalyst is significantly improved. In addition, the deformation of the Pt cluster can be reduced by introducing CNT in Ti 3 C 2 T x to improve the stability of the catalyst. With Pt / CNT- Ti 3 C 2 T x (1: 1) as the cathode catalyst of PEMFC , the maximum power density of the fuel cell stack can reach 138W .

Original link:

https://pubs.acs.org/doi/abs/10.1021/acsami.0c02446

Source: MXene Academic