First Author:Guo, Liutao
Correspondence Author:Xu, Junli, Hong-Bin Sun
Co author:Xu, Wenjuan Sun, Zejun Feng, Yanru Li, Chengrui Li, Hong Liang, Qionglin
Title of Paper:Highly dispersed Rh prepared by the <i>in</i>-<i>situ</i> etching-growth strategy for energy-saving hydrogen evolution
Journal:Journal of the Taiwan Institute of Chemical Engineers
Volume:132
DOI Number:10.1016/j.jtice.2021.10.018
Institution:Department of Chemistry, Northeastern University
Teaching and Research Group:物理化学
Place of Publication:NETHERLANDS
Summary:Background: The development of high-efficiency electrocatalysts that surpass Pt-based catalyst to achieve
moreefficient hydrogen evolution reactions (HER) is significant.
Methods: Herein, we constructed a series of highly dispersed rhodium (Rh) catalysts anchored on the Ni
based layered double hydrotalcite, which were formed by the in-situ etching-growth of nickel-metal organic
frameworks (Ni-MOFs). These electrocatalysts not only exhibit outstanding performance in HER, but also in
urea oxidation reaction (UOR).
Significant findings: The nickel-aluminum layered double hydroxide anchored Rh (Rh-NiAl LDH/NF) has the
best catalytic activity for HER. It only needs an overpotential of 14 mV to reach a current density of
10 mAcm2in1.0 MKOH, which is in the top class of the currently reported HER catalysts. In addition, the
catalyst Rh-NiFe LDH/NF has good catalytic performance for UOR, and it only needs an ultra-low potential of
1.30 V to reach 10 mA cm2. Hence, we constructed an electrolytic cell with the two electrodes for the urea
assisted hydrogen production, which is an energy-saving protocol for HER. The current density of
50 mA cm2can be reached when the cell voltage is only 1.40 V, which is 150 mV less than the traditional
water splitting to produce H2.
Key Words:ElectrocatalystHydrogenLayered double hydroxide carrierRhodiumUrea
Document Code:WOS:000819933600003
Discipline:Natural Science
First-Level Discipline:Chemistry
Page Number:10418
ISSN:1876-1070
Translation or Not:No