Direct methanol fuel cell with alloy-TiO2 nanotube/Ti anode and preparation method thereof
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A methanol fuel cell and nanotube technology, applied in fuel cells, battery electrodes, circuits, etc., to improve the ability to resist CO poisoning, improve battery performance, and reduce costs
Inactive Publication Date: 2014-09-10
NANTONG UNIVERSITY
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PdNi alloy, PdCo alloy, RuNi alloy, RuAg alloy, PdAg alloy, etc. are deposited on TiO 2 Nanotube surface, alloy-TiO 2 Nanotube/Ti is used as a...
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Embodiment 1
[0027] Alloy-TiO 2 The nanotube / Ti anode direct methanol fuel cell includes a battery casing 1, a membrane electrode 4 is arranged in the battery casing, an air chamber 2 is formed between the casing and the membrane electrode, an electrolyte chamber 6 is arranged inside the membrane electrode, and the membrane electrode is from outside to inside. Cathode diffusion layer 7, cathode catalyst layer 8, Nafion membrane 9, porous titanium tube 10, TiO 2 The nanotube 11, the nano alloy layer 12 deposited by electroplating, the cathode diffusion layer and the battery casing are connected by welding points to be set as the cathode output end 3, the anode diffusion layer and the battery casing are connected by welding points to be set as the anode output end 5, and the electrolyte of the casing The chamber part is provided with feeding hole 15, the feeding sealing cover 16, the air chamber part of the casing is provided with air circulation hole 13, the bottom of the air chamber of the...
Embodiment 2
[0044] in TiO 2 The nano-alloy deposited by electroplating on the inner surface of the nanotube / Ti is PdAg alloy.
[0045] The composition of the plating solution:
[0046] AgNO 3 0.01mol / L
[0047] Pd(NO) 2 0.01mol / L
[0048] h 3 BO 3 20g / L
[0049] pH: 4.4
[0050] T: room temperature
[0051] Current density: 5 mA / cm 2
[0052] t: 120min
[0053] After electroplating, wash with deionized water and dry to obtain PdAg-TiO 2 Nanotube / Ti anode. Others are the same as embodiment 1.
Embodiment 3
[0055] in TiO 2 The inner surface of the nanotube / Ti is electroplated and deposited nano-alloy is RuNi alloy.
[0056] The composition of the plating solution:
[0057] NiSO 4 ·6H 2 O 250 g / L
[0058] RuCl 3 1g / L
[0059] h 3 BO 3 20g / L
[0060] pH 4.4
[0061] T room temperature
[0062] Current density: 5 mA / cm 2
[0063] t 120 min
[0064] After electroplating, wash with deionized water and dry to get RuNi-TiO 2 Nanotube / Ti anode.
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Abstract
The invention discloses a direct methanol fuel cell with alloy-TiO2 nanotube/Ti anode and a preparation method thereof. The direct methanol fuel cell comprises a cell housing, the cell housing is inside provided with a membrane electrode, an air chamber is arranged between the housing and the membrane electrode, the membrane electrode is inside provided with an electrolyte chamber, and the membrane electrode successively comprises a cathode diffusion layer, a cathode catalyst layer, a Nafion membrane, a porous titanium pipe, a TiO2 nanotube and a nanometer alloy layer formed through electroplating deposition; the cathode diffusion layer is connected with the cell housing via welding points and is arranged as a cathode output terminal, and an anode diffusion layer is connected with the cell housing via welding points and is arranged as an anode output terminal; a position, close to the electrolyte chamber, on the housing is provided with a feeding hole and a feeding sealing cover; a position, close to the air chamber, of the housing is provided with an air circulation hole; a position, close to the air chamber, at the bottom of the housing is provided with a water discharging hole; and a position, close to the anode diffusion layer, at the bottom of the housing is provided with a CO2 discharging hole. According to the direct methanol fuel cell, the catalytic oxidation performance and the CO-poisoning resistance of a TiO2 composite catalyst on methanol are improved, and alloy-TiO2 nanotube/Ti can be directly used as the anode of a direct methanol fuel cell and helps to improve the cell performances.
Description
technical field [0001] The invention relates to a direct methanol fuel cell. Background technique [0002] Direct Methanol Fuel Cell (DMFC) has the advantages of low energy consumption, high energy density, abundant sources of methanol, low price, simple system, convenient operation and low noise, and is considered to be the most promising future vehicle power and other vehicles. Promising chemical power sources have attracted widespread attention. One of the most critical materials of DMFC is the electrode catalyst, which directly affects the performance, stability, service life and manufacturing cost of the battery. The noble metal Pt has excellent catalytic performance at low temperature (less than 80°C). At present, the electrode catalysts of DMFC all use Pt as the main component, and the PtRu catalyst has stronger CO poisoning resistance and higher catalytic activity than pure Pt. It is considered to be the best catalyst for DMFC at present, but due to its high pric...
Claims
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