Highly Stable Pd-Based Catalytic Nanoarchitectures for Low Temperature Fuel Cells

被引:35
作者
Hu, F. P. [1 ]
Shen, P. K. [1 ]
Li, Y. L. [1 ]
Liang, J. Y. [1 ]
Wu, J. [1 ]
Bao, Q. L. [2 ]
Li, C. M. [2 ]
Wei, Z. D. [3 ]
机构
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
[3] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
关键词
Catalyst; Ethanol Oxidation; Fuel Cells; Multiwalled Carbon Nanotubes; Nanoparticles;
D O I
10.1002/fuce.200800065
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The multiwalled carbon nanotubes (MWCNTs) are treated with hydrofluoric acid (HF) aqueous solution so as to make enlarged micropores on the nanotube walls. Normally, there are no chemical bonds between the metal nanoparticles and the support. Therefore, the large contact area between metal nanoparticles and the support would decrease the possibility of nanoparticle agglomeration or their detachment from the support. The obtained large micropores; to which the meal nanoparticles are attached can efficiently achieve the above advantages. In the experiment, the catalytic activity and the stability of Pd supported on HF treated MWCNTs (Pd/MWCNTHF) catalyst are evaluated by potential cycling for ethanol oxidation. The voltammetric data suggest that the obtained enlarged micropores on the treated nanotube walls can anchor the metal nanoparticles so effectively that it can overcome the agglomeration or detachment from the surface of the MWCNT. Pd/MWCNTHF catalyst shows improved stability.
引用
收藏
页码:429 / 435
页数:7
相关论文
共 42 条
[1]   Electric-field-induced microstructural transformation of carbon nanotubes [J].
Bao, Qiaoliang ;
Zhang, Han ;
Pan, Chunxu .
APPLIED PHYSICS LETTERS, 2006, 89 (06)
[2]   INSITU ANALYSIS BY INFRARED REFLECTANCE SPECTROSCOPY OF THE ADSORBED SPECIES RESULTING FROM THE ELECTROSORPTION OF ETHANOL ON PLATINUM IN ACID-MEDIUM [J].
BEDEN, B ;
MORIN, MC ;
HAHN, F ;
LAMY, C .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 229 (1-2) :353-366
[3]   P-type macroporous silicon for two-dimensional photonic crystals [J].
Bettotti, P ;
Dal Negro, L ;
Gaburro, Z ;
Pavesi, L ;
Lui, A ;
Galli, M ;
Patrini, M ;
Marabelli, F .
JOURNAL OF APPLIED PHYSICS, 2002, 92 (12) :6966-6972
[4]   Investigation of thermal and electrochemical degradation of fuel cell catalysts [J].
Cai, Mei ;
Ruthkosky, Martin S. ;
Merzougui, Belabbes ;
Swathirajan, Swathy ;
Balogh, Michael P. ;
Oh, Se H. .
JOURNAL OF POWER SOURCES, 2006, 160 (02) :977-986
[5]   Alternative supports for the preparation of catalysts for low-temperature fuel cells: the use of carbon nanotubes [J].
Carmo, M ;
Paganin, VA ;
Rosolen, JM ;
Gonzalez, ER .
JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :169-176
[6]   Visible light emission from macroporous Si [J].
Cheylan, S. ;
Trifonov, T. ;
Rodriguez, A. ;
Marsal, L. F. ;
Pallares, J. ;
Alcubilla, R. ;
Badenes, G. .
OPTICAL MATERIALS, 2006, 29 (2-3) :262-267
[7]   Kinetic model of platinum dissolution in PEMFCs [J].
Darling, RM ;
Meyers, JP .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (11) :A1523-A1527
[8]   VIBRATIONAL-MODES OF CARBON NANOTUBES - SPECTROSCOPY AND THEORY [J].
EKLUND, PC ;
HOLDEN, JM ;
JISHI, RA .
CARBON, 1995, 33 (07) :959-972
[9]   Instability of Pt/C electrocatalysts in proton exchange membrane fuel cells - A mechanistic investigation [J].
Ferreira, PJ ;
la O', GJ ;
Shao-Horn, Y ;
Morgan, D ;
Makharia, R ;
Kocha, S ;
Gasteiger, HA .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (11) :A2256-A2271
[10]   Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs [J].
Gasteiger, HA ;
Kocha, SS ;
Sompalli, B ;
Wagner, FT .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 56 (1-2) :9-35