Affiliation:
1. College of Textile and Clothing Engineering Soochow University Suzhou 215021 China
2. College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215021 China
3. Jiangsu Engineering Research Center for Cathode Materials for Power and Energy Storage Batteries BTR New Material Group Co., Ltd. Shenzhen 518000 China
4. Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou 215021 China
Abstract
High overpotential and poor long‐term operation stability of electrocatalysts are two major barriers for the hydrogen evolution reaction (HER). Herein, 2D ultrathin PdAgAu nanorings are synthesized and further self‐assembled on Ti2CTx–graphene oxide (GO) heterostructure for efficiently boosting HER. The best candidate, Pd50Ag31Au19/Ti2CTx–GO electrocatalyst, can initiate hydrogen evolution at an overpotential of 90 mV at 10 mA cm−2 and exhibits the lowest Tafel slope of 75 mV dec−1 as well as the highest mass activity of 284.4 mA mg−1Pd at −100 mV, in comparison with those of Pd50Ag31Au19/Ti2CTx, Pd50Ag31Au19/GO, and commercial Pd/C. Most remarkably, impressive long‐term stability is achieved even after a 112 h chronoamperometric test. The great performance of Pd50Ag31Au19/Ti2CTx–GO electrocatalyst can be attributed to the advantageous synergistic effect among the morphological modulation, composition optimization, and strong metal–support interaction effect between the Pd50Ag31Au19 nanorings and Ti2CTx–GO support.
Funder
National Natural Science Foundation of China
Subject
Linguistics and Language,Anthropology,History,Language and Linguistics,Cultural Studies