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Flow battery with negative electrode of titanium pair

A technology of flow battery and anode electrolyte, applied in battery electrodes, regenerative fuel cells, circuits, etc., can solve problems such as low theoretical voltage, precipitation, electrode passivation, etc., and achieve simple manufacturing process, high battery voltage, and cycle life. high effect

Inactive Publication Date: 2015-06-17
NO 63971 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, a variety of systems have been developed for flow batteries, starting from iron / chromium batteries, sodium polysulfide / bromine and all-vanadium flow batteries, and exploring new systems. However, there are still many systems with good performance that have not been obtained. enough attention
In particular, in 1979, the iron-titanium battery proposed by F Savinell et al., the positive electrode of the battery is Fe 3+ / Fe 2+ , the negative electrode is TiO 2+ / Ti 3+ , the theoretical voltage of the battery is low, only 0.77V (the actual discharge is only 0.67V), for this reason, the iron-titanium battery has not been developed
In this battery, Fe 3+ / Fe 2+ The half-cell has good reversibility and fast kinetic characteristics, and subsequently developed an iron-chromium battery; while the reaction speed of the titanium half-cell is relatively slow, and it is easy to form TiO 2 Precipitation, passivation of the electrode, for this reason, the titanium pair has not been used in subsequent applications

Method used

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  • Flow battery with negative electrode of titanium pair

Examples

Experimental program
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Effect test

example 1

[0020] Graphite felt is used as the positive electrode, the impermeable graphite plate is used as the positive current collector, the graphite felt is used as the negative electrode, and the impermeable graphite plate is used as the negative current collector. 1.0M TiOSO is used 4 +3M H 2 SO 4 As the negative electrode electrolyte, Nafion117 cation exchange membrane is used as the diaphragm, and 1.0M CoSO 4 +3M H 2 SO 4 As the positive electrolyte, the positive and negative electrodes and the diaphragm are packaged in a shell made of plexiglass to form a single titanium-cobalt flow battery; the negative electrolyte is connected to the magnetic pump and the negative storage tank to form an electrolyte circuit, and the positive electrolyte is also connected with The magnetic pump and the positive storage tank are connected to form an electrolyte circuit. When the solution flow rate on the surface of the positive and negative electrodes is about 10cm / s, at 5mA / cm 2 The avera...

example 2

[0022] Graphite felt is used as the positive electrode, the impermeable graphite plate is used as the positive current collector, the graphite felt is used as the negative electrode, and the impermeable graphite plate is used as the negative current collector. 0.2M TiOSO is used 4 +5M H 2 SO 4 As the negative electrode electrolyte, Nafion117 cation exchange membrane is used as the diaphragm, and 0.2M MnSO 4 +0.2M Na 2 h 2 P 2 o 7 +5M H 2 SO 4 As the positive electrolyte, the positive and negative electrodes and the diaphragm are packaged in a shell made of plexiglass to form a single titanium-manganese flow battery; the negative electrolyte is connected to the magnetic pump and the negative storage tank to form an electrolyte circuit, and the positive electrolyte is also connected with The magnetic pump and the positive storage tank are connected to form an electrolyte circuit. When the solution flow rate on the surface of the positive and negative electrodes is about ...

example 3

[0024] Lead dioxide is used as the positive electrode, lead alloy repeatedly oxidized in sulfuric acid is used as the positive current collector, graphite felt is used as the negative electrode, and impermeable graphite plate is used as the negative current collector. 1.0M TiOSO is used 4 +3M H 2 SO 4 As the negative electrode electrolyte, Nafion117 cation exchange membrane is used as the diaphragm, and 0.5M HIO is used 3 +3M H 2 SO 4 As the positive electrolyte, the positive and negative electrodes and the diaphragm are packaged in a shell made of plexiglass to form a single titanium iodine flow battery; the negative electrolyte is connected to the magnetic pump and the negative storage tank to form an electrolyte circuit, and the positive electrolyte is also connected with The magnetic pump and the positive storage tank are connected to form an electrolyte circuit. When the solution flow rate on the surface of the positive and negative electrodes is about 5cm / s, at 5mA / c...

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PUM

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Abstract

The invention belongs to the fields of chemical engineering and industries, and especially relates to the field of a flow battery with large scale energy storage ability. The negative electrode pair of the battery is a titanium pair, the positive electrode of the battery is Co (III) / Co (II), Mn (III) / Mn (II), Mn (IV) / Mn (II), I (VII) / I (V) or I (V) / I, the electrolyte solutions of the positive electrode and the negative electrode are separated through an ion exchange membrane, and the electrolyte solutions of the positive electrode and the negative electrode respectively flow between a solution storage tank and the battery under the promotion of a pump. The fluid battery has the advantages of high battery voltage, simple manufacturing process, low cost and high cycle life.

Description

technical field [0001] The invention relates to the construction of a novel flow battery system, in particular to a flow battery with a titanium pair as the negative electrode. technical background [0002] Flow battery is a large-scale energy storage device characterized by charging and discharging active materials in a flowing state. In recent years, with the development of renewable energy such as wind energy and solar energy, flow battery due to its large-scale energy storage It shows a good development prospect. So far, a variety of systems have been developed for flow batteries, starting from iron / chromium batteries, sodium polysulfide / bromine and all-vanadium flow batteries, and exploring new systems. However, there are still many systems with good performance that have not been obtained. enough attention. In particular, in 1979, the iron-titanium battery proposed by F Savinell et al., the positive electrode of the battery is Fe 3+ / Fe 2+ , the negative electrode ...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M4/86
CPCY02E60/50
Inventor 程杰徐艳文越华曹高萍杨裕生
Owner NO 63971 TROOPS PLA
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