Platinum-functionalized MXene serving as electron transport layer for highly efficiently catalyze dehydrogenation of AlH3 with capacity of 9.3 wt.%

Abstract

Designing highly efficient catalysts is a major challenge for realizing the practical application of high-capacity hydride in the fuel-cell-based hydrogen economy. Herein, platinum-functionalized Ti3C2 material with an accordion-like structure, interlayer, and surface-dispersed nanoparticles was designed and synthesized. The initial dehydrogenation temperature of high-density hydride AlH3 catalyzed by Ti3C2@Pt could be reduced by 50% to 62 °C, comparable to commercial AlH3. Simultaneously, the hydrogen supplying performance and retention ratio could achieve as high as 9.3 wt% and 98% respectively, which is much higher than that of the best catalysts so far reported. It can be attributed to the high activity of the catalyst originates from the multivalent Ti and the Pt, which promotes the transfer of electrons and hydrogen. The material with excellent dehydrogenation performance provides a practical candidate for mobile device applications under the action of high-efficiency catalysts.