Precise tuning in platinum-nickel/nickel sulfide interface nanowires for synergistic hydrogen evolution catalysis
Pengtang Wang1, Xu Zhang2, Jin Zhang1, Sheng Wan3, Shaojun Guo3,4,5,*（郭少军）, Gang Lu2,*, Jianlin Yao1 & Xiaoqing Huang1, *（黄小青）
1 College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China.
2 Department of Physics and Astronomy,California State University, Northridge, California 91330, USA.
3 Department of Materials Science and Engineering, College of Engineering, Peking University,Beijing 100871, China.
4 BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China.
5 Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China.
NATURE COMMUNICATIONS, 8:14580 ,2017
Comprising abundant interfaces, multicomponent heterostructures can integrate distinct building blocks into single entities and yield exceptional functionalities enabled by the synergistic components. Here we report an efficient approach to construct one-dimensional metal/sulfide heterostructures by directly sulfuring highly composition-segregated platinum-nickel nanowires. The heterostructures possess a high density of interfaces between platinum-nickel and nickel sulfide components, which cooperate synergistically towards alkaline hydrogen evolution reaction. The platinum-nickel/nickel sulfide heterostructures can deliver a current density of 37.2 mA cm−2 at an overpotential of 70 mV, which is 9.7 times higher than that of commercial Pt/C. The heterostructures also offer enhanced stability revealed by long-term chronopotentiometry measurements. The present work highlights a potentially powerful interface-engineering strategy for designing multicomponent heterostructures with advanced performance in hydrogen evolution reaction and beyond.
链接：http://www.nature.com/articles/ncomms14580
