In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells (PEMFCs)
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In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells (PEMFCs). / Sui, Sheng; Zhuo, Xiaolong; Su, Kaihua; Yao, Xianyong; Zhang, Junliang; Du, Shangfeng; Kendall, Kevin.
In: Journal of Energy Chemistry, Vol. 22, No. 3, 01.01.2013, p. 477-483.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells (PEMFCs)
AU - Sui, Sheng
AU - Zhuo, Xiaolong
AU - Su, Kaihua
AU - Yao, Xianyong
AU - Zhang, Junliang
AU - Du, Shangfeng
AU - Kendall, Kevin
PY - 2013/1/1
Y1 - 2013/1/1
N2 - An extensive study has been conducted on the proton exchange membrane fuel cells (PEMFCs) with reducing Pt loading. This is commonly achieved by developing methods to increase the utilization of the platinum in the catalyst layer of the electrodes. In this paper, a novel process of the catalyst layers was introduced and investigated. A mixture of carbon powder and Nafion solution was sprayed on the glassy carbon electrode (GCE) to form a thin carbon layer. Then Pt particles were deposited on the surface by reducing hexachloroplatinic (IV) acid hexahydrate with methanoic acid. SEM images showed a continuous Pt gradient profile among the thickness direction of the catalytic layer by the novel method. The Pt nanowires grown are in the size of 3 nm (diameter)×10 nm (length) by high solution TEM image. The novel catalyst layer was characterized by cyclic voltammetry (CV) and scanning electron microscope (SEM) as compared with commercial Pt/C black and Pt catalyst layer obtained from sputtering. The results showed that the platinum nanoparticles deposited on the carbon powder were highly utilized as they directly faced the gas diffusion layer and offered easy access to reactants (oxygen or hydrogen).
AB - An extensive study has been conducted on the proton exchange membrane fuel cells (PEMFCs) with reducing Pt loading. This is commonly achieved by developing methods to increase the utilization of the platinum in the catalyst layer of the electrodes. In this paper, a novel process of the catalyst layers was introduced and investigated. A mixture of carbon powder and Nafion solution was sprayed on the glassy carbon electrode (GCE) to form a thin carbon layer. Then Pt particles were deposited on the surface by reducing hexachloroplatinic (IV) acid hexahydrate with methanoic acid. SEM images showed a continuous Pt gradient profile among the thickness direction of the catalytic layer by the novel method. The Pt nanowires grown are in the size of 3 nm (diameter)×10 nm (length) by high solution TEM image. The novel catalyst layer was characterized by cyclic voltammetry (CV) and scanning electron microscope (SEM) as compared with commercial Pt/C black and Pt catalyst layer obtained from sputtering. The results showed that the platinum nanoparticles deposited on the carbon powder were highly utilized as they directly faced the gas diffusion layer and offered easy access to reactants (oxygen or hydrogen).
KW - Carbon powder layer
KW - Catalyst layer
KW - Platinum
KW - Proton exchange membrane fuel cells
UR - http://www.scopus.com/inward/record.url?scp=84879852605&partnerID=8YFLogxK
U2 - 10.1016/S2095-4956(13)60062-5
DO - 10.1016/S2095-4956(13)60062-5
M3 - Article
AN - SCOPUS:84879852605
VL - 22
SP - 477
EP - 483
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
SN - 2095-4956
IS - 3
ER -