Axial non-equidistant corrugated plate electrode

Abstract

The invention discloses an axial non-equidistant corrugated plate electrode which comprises an electrode plate, and mastoid structures protruding forwards and reversely are arranged on the electrode plate. The mastoid structures are axially and symmetrically distributed along the central axis of the electrode plate, and the distance between every two adjacent mastoid structures is gradually increased towards the outer side with the central axis as the center. And the mastoid structures on the electrode plates are formed through mechanical stamping. The distance between the mastoid structures on the two sides of the central axis is multiplied. The positions of the mastoid structures on the electrode plates are radially arranged outwards from the vertical central shaft, so that after electrolyte is introduced in the working process of the electrolytic cell, when the electrolyte reaches the position far away from the central shaft, compared with the pole plates uniformly distributed at the mastoid positions, the resistance borne by the electrolyte is smaller, and the flow velocity of the electrolyte is closer to the flow velocity of the position near the central shaft. Therefore, the surface flow velocity consistency of the whole polar plate and the mass transfer uniformity of each position are ensured, the difference between the bubble size and the output rate is avoided, the electrolysis concentration difference is avoided, and the stable and safe operation of an electrolytic bath is facilitated.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis of water, in particular to an axial non-equidistant corrugated plate electrode. Background technique [0002] Hydrogen is an important industrial raw material and an energy carrier. At present, the hydrogen production technology mainly uses fossil fuels such as coal and natural gas to react with steam at high temperature for conversion, accounting for more than 99% of the total output; another type of hydrogen production technology is electrolysis of water to produce hydrogen, which can be combined with wind power, Photovoltaic, hydropower and other renewable energy power generation processes are coupled together to realize the large-scale consumption of intermittent renewable energy, so that no carbon emissions are produced in the hydrogen production process, and under the background of a significant reduction in the cost of renewable energy power generation, the reali...

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Problems solved by technology

During the flow of the electrolyte, the mastoid structure will generate resistance on the flow path. Due to the inconsistent distance between the electrolyte inlet and a certain horizontal line on the electrode plate, the existing uniformly distributed mastoid structure will cause the plate The flow rate of the electrolyte at the outer edge becomes lower. Since the potential of each point of the plate is basically the same under the condition of energization, the uneven flow rate of the electrolyte on the surface of the electrode will easily cause slow bubble diffusion, increased local resistance, fluctuations in electrolyte concentration, and surface electrolyte. Problems such as concentration difference will reduce the efficiency of electrode electrolysis, and will also affect the safe and stable operation of the electrolytic cell

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