Effects of Carbonization Temperature and Time during Carbon Riveting Process on the Stability of Pt/C Catalyst

被引：5
作者：
Jiang, Z. -Z. [1 ,2 ,3 ]
Wang, Z. -B. [3 ]
Rivera, H. [4 ]
Qu, W. -L. [3 ,5 ]
Gu, D. -M. [5 ]
机构：
[1] Soochow Univ Dushu Lake Campus, Inst Funct Nano & Soft Mat, Suzhou 215123, Jiangsu, Peoples R China
[2] Soochow Univ Dushu Lake Campus, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China
[3] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China
[4] Inter Amer Univ Puerto Rico Bayamon Campus, Bayamon, PR 00957 USA
[5] Harbin Inst Technol, Sch Sci, Harbin 150001, Peoples R China
来源：
FUEL CELLS | 2014年 / 14卷 / 04期
基金：
中国博士后科学基金; 美国国家科学基金会; 中国国家自然科学基金;
关键词：
Carbonization Temperature; Carbonization Time; Proton Exchange Membrane Fuel Cells; Stability; PEM FUEL-CELLS; SUPPORT MATERIALS; DURABILITY; PLATINUM; ELECTROCATALYSIS; NANOSTRUCTURES; DEGRADATION; CHALLENGES; OXIDATION;
D O I：
10.1002/fuce.201300280
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Effects of carbonization temperature and time during carbon riveting process on the stability of Pt/C catalysts have been investigated systematically. X-ray diffraction, transmission electron microscopy, cyclic voltammograms, and accelerated potential cycling tests have been performed to characterize the catalysts. The experimental results show that the activity of the riveted Pt/C catalyst decreases with the increasing of the heat-treated temperature and the extension of heat-treated time due to sintering of Pt nanoparticles. The stability of the carbon riveted Pt/C catalysts exhibits the increasing trend with the increase of the carbonization time and temperature. Considering both of the activity and stability of the riveted Pt/C catalysts, the optimized carbonization temperature and time are 400 degrees C and 60 min for a Pt/VulcanXC-72 catalyst with starting particle size before carbonization of 2.2 nm and 20 wt% platinum loading, respectively.
引用
收藏
页码：660 / 666
页数：7
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