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Synchrotron radiation in-situ test device for catalyst in fuel cell catalyst layer

A fuel cell, in-situ testing technology, applied in measurement devices, material analysis using wave/particle radiation, and material analysis, etc., can solve the problem that the mechanism of action of the catalyst cannot be truly reflected, the theoretical support of the catalyst cannot be effectively supported, and the offline analysis method It is difficult to capture problems such as structural changes, so as to achieve the effect of simple and convenient assembly of samples, ensuring integrity, and simple and convenient sample replacement.

Active Publication Date: 2019-03-15
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Off-line analysis methods are difficult to capture the real-time structural changes of catalysts during the catalytic reaction process, so that they cannot truly reflect the mechanism of action of catalysts, and thus cannot effectively provide reliable theoretical support for the design of catalysts with both activity and stability

Method used

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  • Synchrotron radiation in-situ test device for catalyst in fuel cell catalyst layer
  • Synchrotron radiation in-situ test device for catalyst in fuel cell catalyst layer
  • Synchrotron radiation in-situ test device for catalyst in fuel cell catalyst layer

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Embodiment Construction

[0064] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0065] The present invention provides a synchrotron radiation in-situ test device for catalysts in the catalytic layer of a fuel cell, which is characterized in that it includes a synchrotron radiation light source 1, a front ionization chamber, an in-situ pool, and a rear ionization chamber or fluorescence detector 7; The synchrotron radiation light source 1 emits to the rear ionization chamber or the fluorescence detector 7 through the front ionization chamber and the in-situ cell.

[0066] The in-sit...

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Abstract

The invention provides a synchrotron radiation in-situ test device for a catalyst in a fuel cell catalyst layer. The synchrotron radiation in-situ test device comprises a synchrotron radiation light source (1), a front ionization chamber, an in-situ cell and a rear ionization chamber or a fluorescent detector (7), wherein X rays emit from the synchrotron radiation light source (1) and emit onto the rear ionization chamber or the fluorescent detector (7) via the front ionization chamber and the in-situ cell. The in-situ cell comprises working electrode sides and auxiliary electrode sides; and the working electrode side is connected with the auxiliary electrode side by virtue of a through-hole mechanism and a connecting piece (15). The synchrotron radiation in-situ test device for the catalyst in the fuel cell catalyst layer provided by the invention is applicable to the electrocatalytic reaction in-situ cell for in-situ synchrotron radiation XAFS detection, so that a key technical problem of real-time detection of structural evolution of the catalyst is realized.

Description

technical field [0001] The present invention relates, in particular, to a synchrotron radiation in-situ testing device for catalysts in a fuel cell catalytic layer, in particular to a synchrotron radiation in-situ testing device for catalysts in a fuel cell catalytic layer under a certain potential. Background technique [0002] A proton exchange membrane fuel cell consists of a cathode catalytic layer, a proton exchange membrane, and an anode catalytic layer. The catalytic layer is the core component in the electrocatalytic reaction, and its composition and microstructure directly affect the activity of the electrocatalytic reaction and energy conversion efficiency. In the process of electrocatalytic reaction, researchers usually use rotating disk electrode cyclic voltammetry, linear voltammetry scanning method and AC impedance method to characterize the catalytic activity and stability of the catalyst, combined with off-line transmission electron microscope, X-ray diffracti...

Claims

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Application Information

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IPC IPC(8): G01N23/083
CPCG01N23/083
Inventor 章俊良蒋芳玲朱凤鹃罗柳轩吴爱明王超
Owner SHANGHAI JIAO TONG UNIV
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