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Method for using three-dimensional electrode as direct anode of hydroboron fuel cell

A borohydride electricity and borohydride technology, which is applied to fuel cell components, fuel cells, battery electrodes, etc., can solve the problems of low battery output power, small anode reaction area, serious polarization, etc., and achieve battery output. High power, simple preparation method, and the effect of reducing concentration polarization

Inactive Publication Date: 2009-06-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of a method for using a three-dimensional electrode as an anode of a direct borohydride fuel cell in the present invention is to solve the problems of the existing direct borohydride fuel cell anode with small reaction area, serious polarization, and low battery output power, thereby providing a A three-dimensional electrode with large reaction surface area, effectively improved mass transfer conditions, and reduced activation polarization and concentration polarization can be used as a direct borohydride fuel cell anode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] Take a copper mesh with a length and width of 1cm and a hole diameter of 3mm and soak it in dilute sulfuric acid for half an hour, then rinse it with distilled water, and then soak it in ethanol for 1 hour, then polish it with coarse sandpaper and fine sandpaper in turn, and wash it with distilled water Rinse and wipe clean with filter paper; take three pieces of the above-mentioned copper mesh, stack them together, and assemble them into a packed bed. The copper mesh electrode is used as the anode of the direct borohydride fuel cell, and the carbon rod is used as the cathode, and placed in a closed electrochemical reaction tank , separated by a cation exchange membrane in the middle, and the electrolyte on the anode side consists of 2.0mol L -1 NaBH 4 with 2.5mol·L -1 The solution composed of NaOH adopts a through-flow feeding method parallel to the direction of the current, and the flow rate is 5ml min -1 ; Cathode side electrolyte is 2.5mol L -1 NaOH, the oxidant ...

Embodiment approach 2

[0024] Soak a copper plate with a thickness of 3mm in dilute sulfuric acid for half an hour, then rinse it with distilled water, then soak it in ethanol for 1 hour, then polish it with coarse sandpaper and fine sandpaper in turn, rinse it with distilled water, and wipe it clean with filter paper; Get the three above-mentioned copper plates whose length and width are each 1cm, stack them together, keep the distance of 5mm between each copper plate, assemble into a packed bed copper plate electrode as the anode of the direct borohydride fuel cell, and the porous carbon rod as the cathode, Put it into a closed electrochemical reaction tank, separated by an anion exchange membrane in the middle, and the electrolyte on the anode side is composed of 2.0mol L -1 NaBH 4 with 1.0mol·L -1 The solution composed of NaOH adopts a through-flow feeding method perpendicular to the direction of the current, and the flow rate is 3ml min -1 ; Cathode side electrolyte is 3.0mol L -1 NaOH, the ...

Embodiment approach 3

[0026] Take a nickel mesh with a length and width of 1cm and a hole diameter of 3mm and soak it in dilute sulfuric acid for half an hour, then rinse it with distilled water, and then soak it in ethanol for 1 hour, then polish it with coarse sandpaper and fine sandpaper in turn, and then use distilled water to polish it. Rinse and wipe clean with filter paper; take three pieces of the above-mentioned nickel mesh, stack them together, and assemble them into a packed bed. The nickel mesh electrode is used as the anode of the direct borohydride fuel cell, and the carbon rod is used as the cathode, and placed in a closed electrochemical reaction tank , separated by a cation exchange membrane in the middle, and the electrolyte on the anode side consists of 0.005mol L -1 KBH 4 with 5.0mol·L -1 The solution composed of KOH adopts a through-flow feeding method perpendicular to the direction of the current, and the flow rate is 5ml min -1 ; Cathode side electrolyte is 5.0mol L -1 KOH...

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Abstract

The invention relates to one 3D electrode for direct borane fuel battery anode method, which is characterized by the following steps: processing filling bed electrode or multi-hole electrode as three dimensional anode and alkalinity liquid fuel, wherein, the cathode contacts oxygen, air and auricome agent and the middle ion exchange isolation film forms direct borane fuel battery system; borane fuel materials touching three dimensional electrode and alkalinity compound with materials feeding type as through or back entering type.

Description

technical field [0001] The invention discloses a method for using a three-dimensional electrode as an anode of a direct borohydride fuel cell, which belongs to the application field of fuel cells, and specifically relates to a method for using a three-dimensional electrode as an anode of a direct borohydride fuel cell. Background technique [0002] Borohydride alkaline solution, that is, alkali metal borohydride solution, is a kind of stable hydrogen storage substance. Its hydrogen storage capacity is similar to that of methanol, but it is "cleaner" than methanol because it does not contain carbon elements, so boron is used Direct borohydride fuel cells (DBFCs) fueled by alkaline hydride solutions are expected to be a low-temperature decentralized power source to solve the fuel storage problem. [0003] Direct borohydride fuel cell (DBFC) is to add alkali metal borohydride to the corresponding lye as liquid fuel, oxidize on the anode side; pass oxygen (or air) into the same ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/86H01M8/02H01M8/06H01M8/0289
CPCY02E60/50
Inventor 孙彦平段东红崔文科
Owner TAIYUAN UNIV OF TECH
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