Octahedral Pt-Ni nanoparticles prepared by pulse-like hydrothermal method for oxygen reduction reaction

被引：0
作者：
Zhaoyi Yang
Meng Wang
Guicheng Liu
Ming Chen
Feng Ye
Weibin Zhang
Woochul Yang
Xindong Wang
机构：
[1] University of Science and Technology Beijing,State Key Laboratory of Advanced Metallurgy
[2] Dongguk University,Department of Physics
[3] University of Science and Technology Beijing,Department of Physical Chemistry
[4] School of Energy Power and Mechanical Engineering,Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of MOE
[5] North China Electric Power University,School of Physics and Optoelectronic Engineering
[6] Yangtze University,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
[7] Donghua University,undefined
来源：
Ionics | 2020年 / 26卷
关键词：
Pt-Ni alloy; Nanoparticles; Temperature pulse; Oxygen reduction reaction; Electrochemical active surface area;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Herein, the pulse temperature is provided during the nucleation period of the nanoparticles to shorten the nucleation time for Pt-based nanoparticle growth. Herein, 3-nm-sized Pt-Ni alloy octahedral catalysts were prepared by pulse-like hydrothermal method. The influence of the pulse on nucleation is demonstrated by comparing the morphology obtained from the conditions of constant temperature and pulse temperature. It has been found that pulse temperature could decrease the nucleation time, and the final morphology of the nanoparticle is different due to the different growth temperatures and times. When used in oxygen reduction reaction, the octahedron Pt-Ni exhibited a 50 mV positive shift of the half-wave potential and the mass-specific activity and area-specific activity are 5 and 7 times higher than that of commercial 40% Pt/C at 0.9 V. Through this way, kinds of multiple alloy compounds could be composed with less time in the future.
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页码：293 / 300
页数：7
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[1]  
da Silva FT(2014)Effect of Ni proportion on the performance of proton exchange membrane fuel cells using PtNi/C electrocatalysts Ionics 20 381-388
[2]  
Dalmazzo VA(2018)A novel PtRuIr nanoclusters synthesized by selectively electrodepositing Ir on PtRu as highly active bifunctional electrocatalysts for oxygen evolution and reduction Energy Convers Manag 155 182-187
[3]  
Becker MR(2017)Design of 3-electrode system for in situ monitoring direct methanol fuel cells during long-time running test at high temperature Appl Energy 197 163-168
[4]  
de Souza MO(2016)Composition tunable ternary Pt–Ni–Co octahedra for optimized oxygen reduction activity Chem Commun 52 11215-11218
[5]  
de Souza RF(2018)Emerging Pt-based electrocatalysts with highly open nanoarchitectures for boosting oxygen reduction reaction Nano Today 21 91-105
[6]  
Martini EMA(2018)ORR activity and stability of PtCr/C catalysts in a low temperature/pressure PEM fuel cell: effect of heat treatment temperature Int J Hydrog Energy 43 5133-5144
[7]  
Ye F(2018)Adding refractory 5d transition metal W into PtCo system: an advanced ternary alloy for efficient oxygen reduction reaction J Mater Chem A 6 10700-10709
[8]  
Xu C(2018)Soft, highly elastic, and discharge-current-controllable eutectic gallium–indium liquid metal–air battery operated at room temperature Adv Energy Mater 8 1703652-401
[9]  
Liu G(2015)Structure optimization of cathode microporous layer for direct methanol fuel cells Appl Energy 147 396-60
[10]  
Li J(2017)A gradient activation method for direct methanol fuel cells Energy Convers Manag 138 54-12994
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