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Black phospho-TiO2 nanotube/Ti anode direct methanol fuel cell

A methanol fuel cell and nanotube technology, applied in fuel cells, battery electrodes, circuits, etc., can solve problems such as affecting performance and application, less than ideal electrical conductivity, low band gap energy, etc., to improve catalytic oxidation performance, anti-oxidation The effect of improving CO poisoning ability and comprehensive performance

Active Publication Date: 2020-04-17
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 As a semiconductor, the conductivity is not ideal, and the catalyst needs to be doped with C when used, which affects its performance and application
[0003] Black phosphorus is a two-dimensional material that has been studied more in recent years. It has high conductivity, low band gap energy, and high specific surface area, such as with TiO 2 Composite and used as a methanol catalyst can improve the catalytic performance of methanol and the anti-CO poisoning performance, and its use in direct methanol fuel cell electrodes has not been reported

Method used

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  • Black phospho-TiO2 nanotube/Ti anode direct methanol fuel cell

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preparation example Construction

[0029] Wherein, the present invention provides the preparation method of membrane electrode 4, comprises the following steps:

[0030] 1) Place the porous titanium tube in acetone for ultrasonic degreasing for 15 minutes, then wash it with methanol or ethanol; then use 400g / L CrO 3 and 350g / L of H 2 SO 4 Treatment for 3 minutes, double distilled water ultrasonic cleaning 3 times, 1mol / L HF treatment for 10 minutes, double distilled water ultrasonic cleaning 3 times, drying;

[0031] 2) Anodize the porous titanium tube obtained through the pretreatment in step 1) in the electrolyte, the composition of the electrolyte is: 0.5-1% HF, 1mol / L H 2 SO 4 ;The electrolysis potential is 20V, and the electrolysis time is 30-120min; after electrolysis, wash with deionized water, dry, and bake in a muffle furnace at 500°C for 3h to generate TiO on the inner and outer surfaces of the porous titanium tube. 2 nanotubes, to get TiO 2 Nanotube / Ti;

[0032] 3) Heat-treat red phosphorus at ...

Embodiment 1

[0043] (1) Pretreatment of the porous titanium tube: place the porous titanium tube in acetone for ultrasonic degreasing for 15 minutes, then clean it with methanol or ethanol; then use 400g / L CrO 3 and 350g / L of H 2 SO 4 Treat for 3 minutes, ultrasonically clean with double-distilled water for 3 times, treat with 1mol / L HF for 10 minutes, ultrasonically clean with double-distilled water for 3 times, and dry.

[0044] (2)TiO 2 Preparation of nanotubes / Ti: Anodize the porous titanium tubes obtained after the pretreatment in the electrolyte, the composition of the electrolyte: 0.8% HF, 1mol / L H 2 SO 4 ; The electrolysis potential is 20V, and the electrolysis time is 80min; after electrolysis, wash with deionized water, dry, and bake in a muffle furnace at 500°C for 3h to obtain TiO on the inner and outer surfaces. 2 Porous titanium tubes of nanotubes, namely TiO 2 Nanotube / Ti.

[0045] (3) Heat-treat red phosphorus at 200°C for 2 hours to remove oxides and impurities on th...

Embodiment 2

[0050] (1) Pretreatment of the porous titanium tube: place the porous titanium tube in acetone for ultrasonic degreasing for 15 minutes, then clean it with methanol or ethanol; then use 400g / L CrO 3 and 350g / L of H 2 SO 4 Treat for 3 minutes, ultrasonically clean with double-distilled water for 3 times, treat with 1mol / L HF for 10 minutes, ultrasonically clean with double-distilled water for 3 times, and dry.

[0051] (2)TiO 2 Preparation of nanotubes / Ti: Anodize the porous titanium tubes obtained by the pretreatment in the electrolyte, the composition of the electrolyte: 0.8% HF, 1mol / L H 2 SO 4 ; The electrolysis potential is 20V, and the electrolysis time is 80min; after electrolysis, wash with deionized water, dry, and bake in a muffle furnace at 500°C for 3h to obtain TiO on the inner and outer surfaces. 2 Porous titanium tubes of nanotubes, namely TiO 2 Nanotube / Ti.

[0052] (3) Heat-treat red phosphorus at 200°C for 2 hours to remove oxides and impurities on the s...

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Abstract

The invention discloses a black phospho-TiO2 nanotube / Ti anode direct methanol fuel cell. The fuel cell comprises a cell shell and a membrane electrode arranged in the cell shell, an air chamber is arranged between the cell shell and the membrane electrode, and a methanol gas reaction chamber is arranged in the membrane electrode; the membrane electrode comprises a cathode diffusion layer, a cathode catalyst layer, a Nafion membrane and TiO2 nanotube / Ti with a nano black phosphorus layer deposited on the surface from outside to inside; the cathode diffusion layer is connected with the batteryshell through a welding point to form a cathode output end; the black phospho-TiO2 nanotube / Ti anode is connected with the battery shell through a welding point to form an anode output end; a charginghole and a charging sealing cover for sealing the charging hole are arranged at the top end of the methanol gas reaction chamber, the charging hole is used for introducing gaseous methanol, an air circulation hole communicating with the air chamber is formed in the battery shell, a water discharge hole is formed in the bottom of the air chamber, and a CO2 discharge hole is formed in the bottom ofthe black phospho-TiO2 nanotube / Ti anode. The battery disclosed by the invention is relatively low in cost, high in catalytic activity and strong in CO poisoning resistance.

Description

technical field [0001] The invention relates to the technical field of direct methanol fuel cells, in particular to a black phosphorus-TiO 2 Nanotube / Ti anode 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, Pt is the main component of DMFC electrode catalysts, and the PtRu catalyst has stronger CO poisoning resistance and higher catalytic activity than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/1004H01M8/1011
CPCH01M8/1004H01M8/1011H01M4/86H01M4/8878H01M2004/8689Y02P70/50
Inventor 鞠剑峰鞠一逸章琴袁航于亚楠黄佩琳冯芸英
Owner NANTONG UNIVERSITY
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