Spectroelectrochemical in-situ pool and application thereof
A technology of spectroelectrochemistry and in-situ cell, which is applied in the field of spectroelectrochemistry, can solve the problems of low current density, inability to change temperature and voltage, and complex structure of in-situ cell, and achieve the effect of simple structure, low cost and wide application range
Active Publication Date: 2014-09-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
However, there are still the following problems: 1) The current density of the in-situ cell is low, and the working state is quite different from that of the real battery; 2) The temperature and voltage cannot be changed, and different reaction conditions can be investigated; 3) The structure is complex, and it is often aimed at a single optical path system. Poor adaptability
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Embodiment 1
[0032] figure 1 It is a schematic structural diagram of a spectroelectrochemical in-situ cell according to the present invention. The in-situ cell is used to study the electrocatalytic oxidation process of small molecular organics. The diffuse reflection infrared spectrum of the intermediate adsorbed species on the anode side of the membrane electrode changes with potential, temperature, flow rate, fuel concentration, and gas pressure. The in-situ cell includes an upper electrode plate 13, a lower electrode plate 14, a membrane electrode assembly 11, a window sheet 9, electrode plate sealing lines 7, 12, a window sheet sealing O-ring 8, a first polyester frame 10 and a second poly Ester box 10'. The upper electrode plate 13 and the lower electrode plate 14 are made of 316L stainless steel, which is processed into a point-shaped flow field in the electrode reaction area, and a sealing groove is machined outside the flow field. The upper electrode plate sealing line 7 and the l...
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The invention belongs to the technical field of combination of an electrochemical spectrum instrument, and relates to a spectroelectrochemical in-situ pool. The spectroelectrochemical in-situ pool comprises an upper pole plate, a lower pole plate, a membrane electrode assembly, a first polyester frame, a second polyester frame, a window, an upper pole plate sealing line, a lower pole plate sealing line and a window sealing O ring (8). The spectroelectrochemical in-situ pool can achieve combination of a plurality of spectrographs of external reflecting light paths, is close to an actual work environment of a fuel cell, can achieve heating and pressurizing, and achieves the targets of in-situ detection of fuel cell reaction products, intermediate products and adsorbed species under different work conditions. The spectroelectrochemical in-situ pool is strong in versatility, wide in application range, simple in structure, convenient to process and low in cost, and can achieve detection of a spectral signal on a lower membrane electrode under a plurality of situations.
Description
technical field [0001] The invention belongs to the technical field of spectroelectrochemistry, and in particular relates to a spectroelectrochemical in-situ cell, which can realize in-situ detection of adsorbed species on the surface of membrane electrodes as reaction conditions change under the working condition of a fuel cell. Background technique [0002] Spectroscopic techniques include ultraviolet and visible spectroscopy, infrared and Raman vibrational rotation spectroscopy, electron and ion energy spectroscopy, X-ray spectroscopy, etc. Combining the spectroscopic technique with the electrochemical system can provide information about the electrochemical system that cannot be obtained by pure electrochemical experiments, and can detect the species adsorbed on the electrode surface and its changes with changes in chemical and electrochemical environments. Based on this, it is possible to speculate the electrochemical reaction pathway and obtain the electrochemical reac...
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IPC IPC(8): G01N27/28
Inventor 孙公权敬铭轶孙丕昌姜鲁华王素力
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI