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Concentration cell

A technology of concentration difference battery and ion exchange membrane, which is applied in the direction of fuel cells, circuits, electrical components, etc., to achieve the effect of small consumption and low maintenance cost

Active Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in addition to the salt concentration difference that exists in nature, many wastes discharged by various industries also contain huge concentration difference energy.

Method used

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Embodiment 1

[0026] Preparation of gas diffusion electrode: The gas diffusion layer used is TGP-060. It is coated with 0.6mg / cm 2 Carbon powder, PTFE mixture, wherein the mass fraction of PTFE is 30%. The catalyst slurry is then knife-coated over it. The slurry is composed of Pt / C (60% wt. JM Company), Nafion solution with a concentration of 5%, and ethanol; the mass ratio of Nafion, Pt / C, and ethanol is 1:4:20. The gas diffusion electrodes used in the anode and cathode in this embodiment are the same.

[0027] The electrodes prepared above were placed on one side of the cation exchange membrane Nafion-115, and hot-pressed at 120°C and 2,000 pounds of pressure for one minute to form an integrated membrane electrode. The size of the electrodes used in this embodiment is 7cm×7cm. In this embodiment, the anode film electrode (referring to figure 1 111 and 121 in ) and cathode membrane electrode (referring to figure 1 112 and 125 in ) are the same.

[0028] The stainless steel end plate...

Embodiment 2

[0029] Preparation of gas diffusion electrode: The gas diffusion layer used is TGP-060. It is coated with 0.6mg / cm 2 Carbon powder, PTFE mixture, wherein the mass fraction of PTFE is 30%. The catalyst slurry is then knife-coated over it. The slurry is composed of Pt / C (60% wt. JM Company), Nafion solution with a concentration of 5%, and ethanol; the mass ratio of Nafion, Pt / C, and ethanol is 1:4:20. The gas diffusion electrodes used in the anode and cathode in this embodiment are the same.

[0030] Anode membrane electrode preparation (referring to Figure II 211 and 221 in ): the electrode prepared above was placed on the side of the anion exchange membrane FAA-3-PK-130, and hot-pressed at 120°C and 2000 pounds of pressure for one minute to form an integrated membrane electrode. The size of the electrodes used in this embodiment is 7cm×7cm.

[0031] Cathodic membrane electrode preparation (referring to Figure II 212 and 225 in ): Place the electrode prepared above on t...

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Abstract

The invention relates to a concentration cell which is sequentially composed of an anode chamber, an anode attached to an ion exchange membrane, anion exchange membranes and cation exchange membranes which are arranged alternately, a cathode attached to the ion exchange membrane, and a cathode chamber which are arranged from left to right; a clearance is respectively arranged between the anion exchange membrane and the adjacent anode exchange membrane to form more than one alkali liquor chamber and more than one acid liquor chamber which are independent; and the alkali liquor chambers and acid liquor chambers are alternately arranged from left to right. The concentration cell has the functions of treating wastes, reducing CO2 emission, generating power and producing chemicals; the concentration cell has low H2 consumption so as to avoid danger, and the whole cell system does not generate net consumption; and the concentration cell does not have moving parts, and thus, is low in maintenance cost.

Description

technical field [0001] The invention belongs to concentration difference power generation and CO 2 The technical field of utilizing emission reduction, in particular relates to a concentration difference battery based on a solid electrolyte, which can directly convert concentration difference energy into electric energy and produce chemicals at the same time. Background technique [0002] Increasing energy demand and forcing people to seek new technologies to develop renewable energy. Salt difference energy is a renewable energy with the highest energy density in ocean energy, which refers to the chemical potential difference energy between two kinds of water with different salinity concentrations. The chemical potential difference between seawater and river water is approximately equivalent to a water level potential difference at a height of 200 meters, that is, the theoretical capacity of a salt difference power plant built at the river estuary is equivalent to a hydroel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/22
CPCH01M8/227Y02E60/50
Inventor 孙公权杨林林
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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