Development of a Redox Flow Battery System

Introduce

In recent years, with the spread of air conditioning devices, the annual load factor of electric power demand has shown a declining trend. Futhermore, due to the change of electric power to an open market system following recent deregulation and calls for CO2 reduction in response to global environmental problems, the need for an increase in the electric load factor has heightened. In such circumstances, expectations toward electric power storage batteries designed for load leveling have increased.

Since 1985 Sumitomo Electric has been engaged in the development of redox flow batteries, which are a new type of secondary battery for electric power storage, in collaboration with Kansai Electric Power Co., Ltd. In the beginning , development was targeted at high-capacity systems to be used mainly for substations. In order to promote environmental conservation, and in response to a greater demand for low-capacity systems for building and other facilities, development efforts targeted at the commercialization of low-capacity systems for buildings are also proceeding concurrently with the development of high-capacity systems for substations.

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（注：本文系住友電工工程師年度技術匯報，具有一定的參考價值）

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