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Device and method for both electrochemical hydrogen production and lithium extraction

An electrochemical and electrode technology, which is applied in the field of electrochemical hydrogen production and lithium extraction, can solve the problems of low efficiency, difficulty in separation and extraction of lithium, discontinuous extraction of lithium ions, etc., and achieves low energy consumption and unsolvable The effect of continuous low efficiency

Active Publication Date: 2019-05-21
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The invention not only solves the problem of difficulty in separating and extracting lithium from seawater or salt lake brine solution, but also solves the problem of low discontinuous efficiency in the traditional lithium ion extraction process

Method used

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  • Device and method for both electrochemical hydrogen production and lithium extraction
  • Device and method for both electrochemical hydrogen production and lithium extraction
  • Device and method for both electrochemical hydrogen production and lithium extraction

Examples

Experimental program
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Embodiment 1

[0087] Such as Figure 1-4 As shown, the electrochemical hydrogen production and lithium extraction cogeneration device of the present invention includes three electrodes and a diaphragm: oxidation electrode (100), lithium storage electrode (200), hydrogen production electrode (300) and anion exchange membrane (400);

[0088] The oxidation electrode (100), lithium storage electrode (200) and anion exchange membrane (400) form a reaction pool 1, wherein the anion exchange membrane (400) separates the reaction pool 1 into an anode tank and a cathode tank;

[0089] The lithium storage electrode (200) and the hydrogen production electrode (300) form the reaction cell 2;

[0090] The reaction pool 1 and the reaction pool 2 share a lithium storage electrode (200);

[0091] The electrolyte in the anode tank of the reaction pool 1 is an aqueous solution of organic matter (500);

[0092] The electrolyte in the cathode tank of the reaction pool 1 is a lithium-containing solution (600...

Embodiment 2

[0117] Such as Figure 9 As shown, the electrochemical hydrogen production and lithium extraction cogeneration device of the present invention includes three electrodes and a diaphragm: oxidation electrode (100), lithium storage electrode (200), hydrogen production electrode (300) and anion exchange membrane (400);

[0118] The oxidation electrode (100), lithium storage electrode (200) and anion exchange membrane (400) form a reaction pool 1, wherein the anion exchange membrane (400) separates the reaction pool 1 into an anode tank and a cathode tank;

[0119] The lithium storage electrode (200) and the hydrogen production electrode (300) form the reaction cell 2;

[0120] The reaction pool 1 and the reaction pool 2 share a lithium storage electrode (200);

[0121] The electrolyte in the anode tank of the reaction pool 1 is a lithium-containing solution (600);

[0122] The electrolyte in the cathode tank of the reaction pool 1 is a lithium-containing solution (600);

[0123]...

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Abstract

A device and method for both electrochemical hydrogen production and lithium extraction are provided. The device includes three electrodes and one participating membrane which are an oxidation electrode (100), a lithium storage electrode (200), a hydrogen production electrode (300) and an anion exchange membrane (400). The oxidation electrode (100), the lithium storage electrode (200), and the anion exchange membrane (400) form a reaction tank 1, wherein the anion exchange membrane (400) divides the reaction tank 1 into an anode tank and a cathode tank. The lithium storage electrode (200) andthe hydrogen production electrode (300) form a reaction tank 2, wherein the reaction tank 1 and the reaction tank 2 share the one lithium storage electrode (200). Electrochemical water decomposition for hydrogen production and electrochemical lithium extraction are combined for the first time to achieve hydrogen preparation at the same time of efficient lithium extraction. The whole process achieves lithium ion extraction and high-purity hydrogen preparation with high efficiency and low energy consumption.

Description

technical field [0001] The invention belongs to the technical field of electrochemical hydrogen production and lithium ion extraction, and specifically relates to a device and method for joint production of electrochemical hydrogen production and lithium extraction, which realizes the extraction of lithium ions and the preparation of hydrogen by electrochemical means. Background technique [0002] Hydrogen energy and lithium-ion batteries are two important directions of the future clean energy plan. Both hydrogen and lithium are energy carrier elements, and the process of obtaining them must be economical in order to create conditions for hydrogen-oxygen fuel cells and lithium-ion batteries to replace internal combustion engines based on fossil energy. In addition, hydrogen and lithium are still very important Chemicals, large-scale low-cost hydrogen production and efficient extraction of lithium resources are of great significance. As we all know, with the development of t...

Claims

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Application Information

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IPC IPC(8): C25B1/10C25B9/08C25B1/14C22B26/12C25B9/19
CPCY02E60/36
Inventor 张会刚钟成林
Owner NANJING UNIV