ELECTRODE FOR REDOX FLOW BATTERY AND REDOX FLOW BATTERY USING THE SAME

• Main Authors: KOBORI HIROYUKI, KOSAKA YOZO, FUJIWARA AKIRA, NAKAMURA CHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 19.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide: a novel electrode for a redox flow battery, which enables the enhancement of design output densities of a positive electrode cell room and a negative electrode cell room, and enables a redox flow battery operation at low cost; and a redox flow battery using such an electrode.SOLUTION: An electrode for a redox flow battery comprises: carbon particles; a binding material; and a porous base material supporting the carbon particles. The carbon particles are supported on at least one face of the porous base material through the binding material. A redox flow battery 1 comprises: a positive electrode cell room 31 and a negative electrode cell room 32 including a positive electrode 4 and a negative electrode 5, each composed of the electrode for a redox flow battery, respectively; a diaphragm 2 for separating the positive electrode cell room 31 and the negative electrode cell room 32 from each other; a positive electrode circulation mechanism 6 for circulating and supplying a positive electrode electrolyte containing a positive electrode active material to the positive electrode cell room 31; and a negative electrode circulation mechanism 7 for circulating and supplying a negative electrode electrolyte containing a negative electrode active material to the negative electrode cell room 32.SELECTED DRAWING: Figure 1 【課題】正極セル室及び負極セル室の設計上の出力密度を向上させることができ、かつレドックスフロー電池の低コストでの運用を可能とする新規なレドックスフロー電池用電極及びそれを用いたレドックスフロー電池を提供する。【解決手段】レドックスフロー電池１は、レドックスフロー電池用電極としての正極電極４及び負極電極５をそれぞれ含む正極セル室３１及び負極セル室３２と、正極セル室３１及び負極セル室３２を分離する隔膜２と、正極活物質を含む正極電解液を正極セル室３１に循環供給させる正極循環機構６と、負極活物質を含む負極電解液を負極セル室３２に循環供給させる負極循環機構７とを備え、上記レドックスフロー電池用電極は、炭素粒子と、結着材と、炭素粒子を支持する多孔質基材とを含み、多孔質基材の少なくとも一方面上に、炭素粒子が結着材を介して支持されている。【選択図】図１