@article{Wang2019, 
author = {Yihe Wang and Lei Zhang and Congling Hu and Shengnan Yu and Piaoping Yang and Dongfang Cheng and Zhi-Jian Zhao and Jinlong Gong},
title = {Fabrication of bilayer Pd-Pt nanocages with sub-nanometer thin shells for enhanced hydrogen evolution reaction},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {9},
pages = {2268-2274},
keywords = {electrocatalysis, hydrogen evolution reaction, nanocages, Pd-Pt alloy, multishelled nanocubes},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2312-y},
doi = {10.1007/s12274-019-2312-y},
abstract = {The hydrogen evolution reaction (HER), which generates molecular hydrogen through the electrochemical reduction of water, is an important clean-energy technology. Platinum (Pt) is an ideal material for HER electrocatalysts in terms of low overpotential and fast kinetics. An effective method to improve the atom utilization efficiency of Pt is to fabricate Pt-based core-shell or nanocage structures with ultra-thin walls. This paper describes the construction of bilayer palladium (Pd)-Pt alloy nanocages catalyst with enhanced HER catalytic activity. The nanocages were fabricated by etching away the Pd templates of multishelled nanocubes composed of alternate shells of Pd and Pt with well-defined (100) facets. The bilayer Pd-Pt nanocages with sub-nanometer shells have a high dispersion of the active atoms on the outside and inside surfaces of outer layer and inner layer, respectively. Moreover, the Pd-Pt alloy lowers the overpotential for HER and speeds up the reaction rate of HER due to the synergies between Pd and Pt. The rational design of bilayer nanocages provided a novel route for boosting the atom utilization efficiency of Pt catalysts.}
}