A flow field plate and iron-chromium flow battery

A technology of flow battery and chromium solution, applied in the field of new energy, can solve the problems of large degree of side reaction, poor performance and capacity of flow battery, etc., to improve performance and capacity, reduce internal bypass current loss, improve The effect of mass transfer

Active Publication Date: 2021-09-24
SHANGHAI LONGVAULT ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon paper flow battery uses carbon paper made of carbon fiber material as the electrode material, which has a large degree of side reactions, and the performance and capacity of the flow battery are not particularly good.

Method used

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  • A flow field plate and iron-chromium flow battery
  • A flow field plate and iron-chromium flow battery
  • A flow field plate and iron-chromium flow battery

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] Such as Figures 1 to 5 As shown, the present invention preferably prefers an iron-chromium flow battery, such as figure 2 As shown, the iron-chromium flow battery includes a three-in-one component, a current collecting end plate, a bipolar plate, a current collecting copper plate, and a fixed end plate. The bipolar plate is sandwiched between the three-in-one component, and the three-in-one The component is attached with a current collecting end plate, and the fixed end plate is located at both ends of the iron-chromium flow battery to fix the three-in-one component, the current collecting end plate, the bipolar plate, and the current collecting copper plate, and the current collecting ...

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Abstract

The invention discloses a flow field plate and an iron-chromium flow battery, comprising an electrolyte solution inlet, an electrolyte solution outlet, an inflow-limiting channel, an outflow-limiting channel, a divided inflow channel, and a divided outflow channel; the electrolyte solution outlet and The outflow-limiting channel is connected, the electrolyte solution inlet is connected to the inflow-limiting channel, the outflow-limiting channel diverges at least two outflow channels, the inflow-limiting channel diverges at least two inflow channels, the outflow channel and the The end of the inflow channel is a blind end; the outflow channel and the inflow channel form a serpentine cross structure or a parallel cross structure. The present invention improves fluid resistance distribution, reduces fluid resistance, and reduces internal bypass current loss, so that internal bypass current loss is controlled within 1%, thereby improving the mass transfer effect of the electrolyte solution in the carbon paper electrode, thus possibly reducing the electrode The mass transfer polarization on .

Description

technical field [0001] The invention relates to the field of new energy, in particular to a flow field plate and an iron-chromium flow battery. Background technique [0002] As early as the 1970s and 1980s, the Lewis Research Center of NASA (Lewis Research Center) invested a lot of research on the iron-chromium (Fe / Cr) battery system, overcoming the electrolyte solution of the positive and negative electrodes. Through the mixing problem of the electrolyte membrane and the preparation of the key components of the catalytic electrode, a 1kW battery energy storage system has been developed, and the efficiency of the battery is still above 80% after 100 charge-discharge cycles. Afterwards, the technology property rights were transferred to commercial companies to prepare for product development, but due to the slowdown of the oil crisis, the company did not choose to further develop this technology. In the late 1980s, Japan's Sumitomo Corporation Shimokansai Electric Power Comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0263
CPCH01M8/0263Y02E60/50
Inventor 杜克兰
Owner SHANGHAI LONGVAULT ENERGY TECH CO LTD
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