Electrochemical Deposition of Pt Nanoclusters on WC for Hydrogen Evolution Reaction in Acid

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2337
Author(s):  
Yanying Yu ◽  
Jie Xu ◽  
Jianwei Zhang ◽  
Fan Li ◽  
Jiantao Fu ◽  
...  

Transition-metal dichalcogenides (TMDs) materials have attracted much attention for hydrogen evolution reaction (HER) as a new catalyst, but they still have challenges in poor stability and high reaction over-potential. In this study, Ultra-thin SnS2 nanocatalysts were synthesized by simple hydrothermal method, and low load of Pt was added to form stable SnS2-Pt-3 (the content of platinum is 0.5 wt %). The synergistic effect between ultra-thin SnS2 rich in active sites and individual dispersed Pt nanoclusters can significantly reduce the reaction barrier and further accelerate HER reaction kinetics. Hence, SnS2-Pt-3 exhibits a low overpotential of 210 mV at the current density of 10 mA cm−2. It is worth noting that SnS2-Pt-3 has a small Tafel slope (126 mV dec−1) in 0.5 M H2SO4, as well as stability. This work provides a new option for the application of TMDs materials in efficient hydrogen evolution reaction. Moreover, this method can be easily extended to other catalysts with desired two-dimensional materials.


2018 ◽  
Vol 11 (5) ◽  
pp. 1232-1239 ◽  
Author(s):  
Kui Li ◽  
Yang Li ◽  
Yuemin Wang ◽  
Junjie Ge ◽  
Changpeng Liu ◽  
...  

PtRu alloy nanoparticles, surface-enriched with Pt nanoclusters and partially-embedded in carbon, act as the cost-effective and promising alternative to commercial Pt/C for electrocatalytic hydrogen evolution.


2017 ◽  
Vol 41 (15) ◽  
pp. 7012-7019 ◽  
Author(s):  
Tianxing Wu ◽  
Guozhong Wang ◽  
Yunxia Zhang ◽  
Shenghong Kang ◽  
Haimin Zhang

Electrochemically fabricated Pt/CFC by successive CV scanning in acidic media using Pt mesh counter electrode exhibits more favourable hydrogenation reaction activity of PNP to PAP using a CFC counter electrode.


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