Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Microfluidic fuel cell having diaphragm

A fuel cell, separator membrane technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of fuel or oxidant permeation, battery performance impact, battery performance degradation, etc., to achieve low cost, improve battery performance, and make simple Effect

Active Publication Date: 2020-01-03
CHONGQING UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem with current microfluidic fuel cells is the anode CO 2 Effect of air bubbles on battery performance
As the electrochemical reaction continues, CO 2 The bubbles will continue to grow and coalesce, and fill the entire microchannel. During this process, the bubbles will greatly disturb or even destroy the parallel laminar flow, causing convective mixing of the oxidant and fuel, resulting in the penetration of fuel or oxidant, and generation of Parasitic current, causing a sharp drop in battery performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microfluidic fuel cell having diaphragm
  • Microfluidic fuel cell having diaphragm
  • Microfluidic fuel cell having diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1, see Figure 1 to Figure 3 , a microfluidic fuel cell with a separator, comprising an upper cover plate 1, a lower cover plate 3, a cathode 5, an anode 2, an inlet plate 4 and an outlet plate 6; it is characterized in that: the cathode 5, the anode 2, the inlet Both the plate 4 and the outlet plate 6 are placed on the lower cover plate 3, located below the upper cover plate 1; the anode 2 and the cathode 5 are arranged opposite to each other on the left and right, and there is a gap 12 between the cathode 5 and the anode 2, and the gap 12 serves as A main channel for the solution to flow; the main channel is provided with a separation membrane 7, and the separation membrane 7 divides the main channel into left and right flow channels; the separation membrane 7 is a porous filter paper with hydrophilicity; The inlet plate 4 and the outlet plate 6 are respectively arranged on the front and rear sides of the main channel; the inlet plate 4 is provided with two in...

Embodiment 2

[0025] Example 2 is different from Example 1 in that: the separation membrane 7 is a nylon membrane prepared by an in-situ chemical reaction synthesis method.

[0026] Specifically: the solution obtained by dissolving the hexamethylenediamine aqueous solution and the adipoyl chloride solution in the organic solvent is injected into the two inlet channels 8 and 9 respectively at a flow rate of 60-100 μL / min, enters the main channel, and forms in the main channel At the water-oil interface, hexamethylenediamine and adipoyl chloride molecules in the solution diffuse to the water-oil interface to undergo polycondensation reaction to produce polyamide. After continuous reaction, a layer of porous nylon membrane is formed in the main channel. Finally, ethanol is injected into the inlet channel first. Rinse the nylon membrane in the process, inject a deionized aqueous solution into the inlet channel to rinse the nylon membrane, and then inject nitrogen gas into the inlet channel to pu...

Embodiment 3

[0029] Embodiment 3: the microfluidic fuel cell with separation membrane that operation embodiment 1 makes, and described anode 2 oxidizes fuel and produces electron and produces CO 2gas bubbles, the cathode 5 reduces persulfate ions in the oxidizer and combines electrons to generate sulfate ions. Catalysts such as Pd on the anode catalytic layer perform electrocatalytic oxidation of fuels such as formic acid to generate carbon dioxide, electrons and hydrogen ions. The electrons reach the cathode 5 through the load through the external circuit to generate electric energy. After a period of reaction, the carbon dioxide produced at the anode is released to form CO 2 The air bubbles are restricted on the anode side by the separator, and finally the air bubbles are discharged along the flow channel.

[0030] see Figure 4 , Figure 4 It is the power density curve figure of the microfluidic fuel cell of embodiment 1 and the microfluidic fuel cell without filter paper separating...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a microfluidic fuel cell with a diaphragm. The microfluidic fuel cell comprises an upper cover plate, a lower cover plate, a cathode, an anode, an inlet plate and an outlet plate; the cathode, the anode, the inlet plate and the outlet plate are all placed on the lower cover plate and located below the upper cover plate; the anode and the cathode are oppositely arranged leftand right, a gap is reserved between the cathode and the anode, and the gap serves as a main flow channel for a solution to flow; the diaphragm is arranged in the main flow channel and divides the main flow channel into a left flow channel and a right flow channel; the diaphragm is a porous filter paper or a nylon membrane prepared by an in-situ polycondensation chemical reaction synthesis method; the inlet plate and the outlet plate are respectively arranged on the front side and the rear side of the main flow channel; the inlet plate is provided with two inlet channels, the output ends of the two inlet channels are connected with the left flow channel and the right flow channel of the main flow channel respectively, and the outlet plate is provided with two outlet channels. The microfluidic fuel cell can be widely applied to the fields of energy and the like.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a microfluidic fuel cell with a separation membrane. Background technique [0002] With the rapid development of science and technology, various high-performance mobile electronic devices (such as smart phones, micro-sensors, portable medical devices, etc.) The performance is continuously enhanced, and the requirements for power output power and continuous running time are getting higher and higher; on the other hand, electronic equipment is increasingly miniaturized and miniaturized, accompanied by the continuous reduction of battery volume. At present, these electrode devices mostly use lithium-ion batteries and other power sources. However, the energy density of these power supplies is low, which cannot meet the requirements of long-term continuous operation, and the output power of the battery is not too high. Micro direct methanol fuel cells are limited by issues such as difficul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1009H01M8/0258
CPCH01M8/0258H01M8/1009Y02E60/50
Inventor 叶丁丁兰巧朱恂刘明陈蓉廖强付乾
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com