Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147595 | International Journal of Hydrogen Energy | 2017 | 7 Pages |
Abstract
In recent years, platinum-based catalysts are the most promising candidates for hydrogen evolution reaction (HER). Decrease of the Pt usage is an effective way to obtain low-cost hydrogen production. In order to achieve this goal, we synthesized Pt-Ag/SiNW composites with different dosages of Pt, using inexpensive Ag as a co-catalyst and SiNWs as carriers, and tested their catalytic performance in HER. The results showed that the optimal composition of Pt: Ag: Si = 4.1: 21.5: 74.4 in mass ratio. With such a low amount of Pt, the Pt-Ag/SiNW catalyst exhibited exciting HER performance, whose turnover frequency is 6.3H2Ptâ1sâ1 at â0.2 V vs. RHE, 2.7 times as large as that of 40 wt% Pt/C. This design greatly increased the utilization ratio of Pt, which may open a new way for preparation of other Pt-based catalysts.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Wen Shen, Bin Wu, Fan Liao, Binbin Jiang, Mingwang Shao,