Acid single flow cell

A flow battery, single-liquid technology, applied in the field of acid single-liquid flow battery, can solve the problems of deposition of sulfur in the diaphragm, occupying volume and weight, cross-contamination, etc., to reduce charging voltage, improve energy efficiency, and reduce concentration polarization. Effect

A flow battery, single-liquid technology, applied in the field of acid single-liquid flow battery, can solve the problems of deposition of sulfur in the diaphragm, occupying volume and weight, cross-contamination, etc., to reduce charging voltage, improve energy efficiency, and reduce concentration polarization. Effect

CN101567459AInactive Publication Date: 2009-10-28BEIJING UNIV OF CHEM TECH
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  • Acid single flow cell
  • Acid single flow cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1-3 is such as figure 1 A single acidic single flow battery is shown.

[0037] After mixing 30 grams of lead sulfate plus 5 grams of 20% sulfuric acid solution, apply it on 4*6cm 2 On the lead-calcium alloy (containing 0.4% of calcium) plate frame, the lead dioxide electrode plate that the rated capacity is 2000mAh is obtained through pre-charge formation. With 4*6cm 2 The titanium-based gold-plated electrode is the negative current collector, 500ml2MH 2 SO 4 -0.5MIN 2 (SO 4 ) 3 The solution is an electrolyte. The HB-2B peristaltic pump is used as the power pump, and the electrolyte is circulated at a speed of 220ml / h. The electromotive force of the battery is 2.11V, the average discharge voltage is 1.65-2.05V at a discharge rate of 1000mA, and the energy efficiency of the process is 85.5%.

Embodiment 2

[0039] Add 32 grams of lead sulfate to 5 grams of 20% sulfuric acid solution and 1 gram of Pb 3 o 4 After mixing evenly, apply on 4*6cm 2 On the lead alloy plate frame containing 1.2% antimony, the lead dioxide plate with a rated capacity of 2200mAh is obtained through pre-charging. With 4*6cm 2 The graphite electrode is the negative current collector, 500ml2.5MH 2 SO 4 -0.1M H 3 PO 4 -0.65MCdSO 4 The solution is an electrolyte. The HL-2B peristaltic pump is used as the power pump, and the electrolyte is circulated at a speed of 270ml / h. The electromotive force of the battery is 2.055V, the average discharge voltage is 1.985V at a discharge rate of 1000mA, and the energy efficiency of the process is 90.3%.

Embodiment 3

[0041] Two lead dioxide plates with a rated capacity of 3000mAh were used as positive electrodes, which were respectively placed on both sides of the negative electrode collector. With 5*8cm 2 The double-sided silver-plated stainless steel electrode is the negative current collector, 500ml2.5MH 2 SO 4 -0.1M HClO 4 -0.65MCdSO 4 The solution is an electrolyte, and 0.5 g / L of ammonium triacetate is added to the electrolyte. The MP-10RN magnetic circulation pump is used as the infusion pump, and the electrolyte is circulated at a flow rate of 500ml / h. The electromotive force of the battery is 2.11V, the average discharge voltage is 1.9V at a discharge rate of 3000mA, and the energy efficiency of the process is 87.5%.

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Abstract

The invention relates to an acid single flow cell which can be applied to large-scaled energy storage and power generation. The cell comprises an electrolyte storage tank, a cadmium or indium deposited cathode current collector and a lead dioxide anode; an acid solution of soluble cadmium salt or indium salt is used as an electrolyte; and when the cell is charged, the cadmium or indium ions are deposited on the cathode current collector from the electrolyte, and when the cell is discharged, the metal cadmium or indium is dissolved in the electrolyte from the cathode current collector. The current cell has the advantages of simple structure, convenient preparation, high electric energy conversion efficiency, long cycle life, environmental protection, safe use, and the like.

Description

Technical field: [0001] The invention relates to an acidic single flow battery which can be used for large-scale energy storage and power generation. Background technique: [0002] Electric energy is an important guarantee for the development of the national economy and an important foundation for the modern defense industry. The sufficient supply and efficient utilization of electric energy are of great practical significance. In order to achieve stable power supply, it is of great significance to develop efficient large-scale energy storage technology. In order to solve and improve the power supply problems in remote areas of our country, it is necessary to establish a distributed power supply system. The large-scale energy storage unit is the "power bank" of the distributed power supply system, which plays an extremely important role and is also one of the key technologies that must be effectively solved. [0003] The flow battery in the chemical storage battery, or flow...

Claims

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Application Information

Patent Timeline
28 Oct 2009
Publication
CN101567459A
IPC
H01M8/18; H01M8/20; H01M10/36; H01M12/00
CPC
Y02E60/528; Y02E60/128; Y02E60/10; Y02E60/50
Inventors
ζ½˜ε†›ι’; 程杰