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Direct borohydride fuel cell capable of simultaneously treating organic wastewater

A borohydride and fuel cell technology, applied in the direction of fuel cells, fuel cell components, circuits, etc., can solve problems such as affecting the output performance of the battery, and achieve the effects of improving fuel utilization, avoiding wear, and reducing polarization loss.

Inactive Publication Date: 2018-04-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an acidic electrolyte, the two-electron reaction of oxygen occurs more easily to generate H 2 o 2 If hydrogen peroxide cannot be further utilized, it will decompose and release oxygen, which will seriously affect the output performance of the battery.

Method used

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  • Direct borohydride fuel cell capable of simultaneously treating organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh 1.0 g of Vulcan XC-72 carbon powder, add 40 mL of a mixture of water and isopropanol with a volume ratio of 1:1, sonicate for 30 min, and sequentially add 0.5 mol / L chloroauric acid solution and CuSO 4 solution, control the molar ratio of Au and Cu to 0.2:1, ultrasonically vibrate for 1 hour, then add enough sodium borohydride solution to reduce, stir at a constant temperature of 80 ° C for 1 hour, suction filtration, rinse with distilled water to obtain a metal content of 40% AuCu / C catalyst. Take 0.5 g of carbon-supported catalyst AuCu / C, add 10 mL of anhydrous ethanol and 3 mL of Nafion solution, sonicate for 30 min, and evenly coat it on the nickel mesh so that the metal loading on the nickel mesh is 1 mg / cm 2 . Drying is the anode of the prepared battery.

[0045] (2) Take 1g of activated carbon fiber, add 7mL of acetone, ultrasonically shake for 10 minutes to make an ink-like mixture, then add 0.05g of 10% PTFE, stir, ultrasonically shake for 70 minute...

Embodiment 2

[0052] (1) Weigh 1.0 g of Vulcan XC-72 carbon powder, add 40 mL of a mixture of water and isopropanol with a volume ratio of 1:1, sonicate for 30 min, and add 0.5 mol / L chloroauric acid solution and NiCl in turn 2 solution, control the molar ratio of Au and Ni to 0.5:1, ultrasonically vibrate for 1 hour, then add enough sodium borohydride solution to reduce, stir at a constant temperature of 80 °C for 1 hour, suction filtration, rinse with distilled water to obtain a metal content of 20% AuNi / C catalyst. Take 0.5 g of carbon-supported catalyst AuNi / C, add 10 mL of anhydrous ethanol and 3 mL of Nafion solution, sonicate for 30 min, and coat it on a nickel mesh so that the metal loading on the nickel mesh is 0.5 mg / cm 2 . Drying is the anode of the prepared battery.

[0053] (2) Take 1g of graphite powder, add 10mL of acetone, ultrasonically shake for 10 minutes to make an ink-like mixture, then add 0.2g of 30% PTFE, stir, and ultrasonically shake for 45 minutes, then place in...

Embodiment 3

[0060] (1) Weigh 1.0 g of Vulcan XC-72 carbon powder, add 40 mL of a mixture of water and isopropanol with a volume ratio of 1:1, sonicate for 30 min, and add 0.5 mol / L chloroauric acid solution and CoCl in turn 2 Solution, control the molar ratio of Au to Co to 0.3:1, ultrasonically vibrate for 1h, then add enough sodium borohydride solution to reduce, stir at a constant temperature of 80 °C for 1h, suction filtration, rinse with distilled water to obtain a metal content of 30% AuCo / C catalyst. Take 0.5 g of carbon-supported catalyst AuCo / C, add 10 mL of anhydrous ethanol and 3 mL of Nafion solution, sonicate for 30 min, and coat it on a nickel mesh so that the metal loading on the nickel mesh is 1.5 mg / cm 2 . Drying is the anode of the prepared battery.

[0061] (2) Take 1g of carbon nanotubes (CNTs), add 8mL of acetone, ultrasonically shake for 10 minutes to make an ink-like mixture, then add 0.35g of 50% PTFE, stir, ultrasonically shake for 90 minutes, and place in a 60°...

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Abstract

The invention discloses a direct borohydride fuel cell capable of simultaneously treating organic wastewater. The fuel cell is formed through assembling a bipolar membrane compounded by an anion-cation exchange membrane as a membrane; hydrogen peroxide is generated through oxygen reduction for a cathode of the direct borohydride fuel cell; a fenton reagent is formed through adding ferrous ions; and pollutants in organic wastewater are degraded during electricity generation, so that the direct borohydride fuel cell has two effects of power generation and organic wastewater treatment. A lot of H2O2 does not need to be added on site while organic matters are degraded, so that the whole process is natural and environment-friendly.

Description

technical field [0001] The present invention relates to an alkaline fuel cell directly fed in liquid state, more particularly to a power generation device which can simultaneously degrade organic pollutants by using a bipolar membrane direct borohydride fuel cell. Background technique [0002] Direct borohydride fuel cells (DBFC) are based on liquid alkali metal borohydride MBH 4 (NaBH 4 , LiBH 4 , KBH 4 ) as fuel, oxidize on the anode side, release electrons, and the oxidant is reduced on the cathode side. Borohydride is a compound with a high hydrogen content. For example, NaBH 4 Contains 10.6% (by weight) hydrogen, which is more hydrogen than most hydrogen storage alloys can store. If sodium borohydride is used as fuel, NaBH 4 The theoretical energy density can reach 9.3Wh / g, which is much higher than that of fuel cells using methanol (6.1Wh / g) as fuel, and the chemical properties of borohydride are stable, easy to store and supply, safe to use and not flammable, s...

Claims

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Application Information

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IPC IPC(8): H01M8/0245H01M8/0289H01M8/083
CPCH01M8/0245H01M8/0289H01M8/083Y02E60/50
Inventor 段东红武爱莲卫慧凯张庆杰卫国强刘世斌阴雪利张鼎徐守冬
Owner TAIYUAN UNIV OF TECH
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