Construction of trifunctional electrode material based on Pt-Coordinated Ce-Based metal organic framework

The main challenge hindering the use of Pt nanoparticles (Pt NPs) for electrochemical applications is their high cost and agglomeration. Herein, a trifunctional electrode material based on a two-dimensional cer-ium-based metal organic framework (2D Ce-MOF) decorated with Pt NPs is constructed. The large specific surface area of the 2D Ce-MOF can effectively prevent the phenomenon of Pt NPs reaction. The strong synergy between Pt NPs and the 2D Ce-MOF not only significantly enhances electron transport efficiency, but also increases the number of electrochemically reaction reactive sites. As a result, the Ce-MOF@Pt presents excellent performance in the HER (Hydrogen Evolution Reaction), OER (Oxygen Evolution Reaction) and supercapacitor reactions. The Tafel slopes of OER and HER are 47.9 and 188.1 mV dec(-1), respectively. Meanwhile, Ce-MOF@Pt-0.05 shows a specific capacity of 1894F g(-1) at a current density of 1 A g(-1) and remains at 111.5% of the initial capacitance after 3000 cycles. In general, this study high-lights the importance of Pt NPs in promoting the electrochemical performance of MOFs and reveals a new way to reduce electrocatalyst prices. (c) 2022 Elsevier Inc. All rights reserved.

Automated summary

A trifunctional electrode material based on a two-dimensional cerium-based metal organic framework decorated with platinum nanoparticles has been developed, which effectively enhances electron transport efficiency and increases the number of electrochemically reactive sites. The material exhibits excellent performance in the hydrogen evolution reaction, oxygen evolution reaction, and supercapacitor reactions.