Composite dual-electrode plates preparation method of minisize directly connecting methanol fuel battery

Abstract

The invention discloses a clad plate preparation method of micro methanol battery, the modified polymethyl methacryate is the basis materials, the high conductivity copper is conductive layer, and the nickel is as the anti-corrosion protective material. Adopting non-siliceous composite preparation technology, firstly producing the master mask and silicon rubber soft mould; then adopting the craft of 'inverse autogram' to stamp the micro channel of flow field on the modified polymethyl methacryate whose substrate is glass; then depositing the copper on surface of micro channel with craft of plating, a layer of nickel is plated on the substrate of the copper, then the composite deposite is nitration surface modified treatment; at last, after eliminating the glass substrate, producing the imports and exports of the reactants and resultant by laser micromachining. The polymer / copper nickel base clad plate possesses advantages that the weight is light, the volume is small, performance is well, cost is low, and it fits for batch size production.

Description

technical field [0001] The invention belongs to the technical field of micro fuel cells, and relates to a method for preparing a composite bipolar plate of a micro direct methanol fuel cell (μDMFC). The μDMFC polymer / copper-nickel based composite bipolar plate prepared by the method has the advantages of light weight, small volume, The performance is good, the production cost is low, and it can be suitable for mass production. Background technique [0002] With the continuous emergence of wireless communication equipment and various portable electronic products (such as mobile phones, notebook computers, digital machines, PDA, MP4, etc.) and the continuous improvement of performance, the demand for high-energy, micro-batteries is increasing. The traditional nickel-cadmium, nickel-metal hydride and lithium-ion batteries have been difficult to meet the requirements of these product development. In addition, micro-batteries have been integrated into the...

AI Technical Summary

Problems solved by technology

However, the method of manufacturing silicon-based bipolar plates based on MEMS technology has the biggest disadvantages of high manufacturing cost and low efficiency, and it is impossible to realize the preparation of true three-dimensional microchannels.

In addition, compared with the existing rectangular, trapezoidal or triangular channel cross-sectional shapes, the curved cross-section channel bipolar plate has better performance. The curved cross-section channel is a large-area three-dimensional microstructure based on microelectronics technology The developed traditional micro-manufacturing technology can generally only form two-dimensional planar structures or quasi-three-dimensional microstructures, and it is difficult to process true three-dimensional microstructures. It is still a technical difficulty to manufacture large-area three-dimensional microstructures at low cost.

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