【作者】 周汉涛； 张华民； 赵平； 衣宝廉；

【Author】 Zhou Hantao Zhang Huamin Zhao Ping Yi Baolian (Fuel cell R&D Center, Dalian Institute of Chemical physics, ChineseAcademy of Sciences, Dalian, 116023) (Graduate School of the Chinese Academy of Sciences, Beijing, 100039)

【机构】 中国科学院大连化学物理研究所燃料电池工程中心；

【摘要】 在各种储能技术之中,氧化还原液流储能电池具有效率高、成本低、寿命长、设计灵活等优点。用石墨纤维毡和活性炭颗粒分别制备了多硫化钠/溴(PSB)液流储能电池用流通型(flow-through)电极和流经型(flow-by)电极。在40mA/cm2下,采用载钴石墨毡流通型电极的电池,能量效率保持在80%以上,采用活性炭流通型电极的电池循环能量效率大于67%。研制了千瓦级多硫化钠/溴液流电池储能系统,测试表明该电池易于放大,串并联特性优秀,非常适合规模化储能。针对我国能源资源、能源供应及国防安全的重大需求,提出了多硫化钠/溴液流储能电池关键材料的研究重点。更多还原

【Abstract】 Among various energy storage technologies, a redox flow battery, like a hybrid between a fuel cell and a secondary battery, possesses the advantages of low capital costs, high efficiency, long lifetime, and flexible design feature. Based on graphite felt and activated carbon particle, flow-through and flow-by electrodes for sodium polysulfide/bromine ( PSB) redox flow battery are prepared respectively. At a current density of 40mA/cm2, using graphite felt deposited with cobalt as negative electrode of PSB battery, the cyclicenergy efficiency of above 80% has been achieved. While for activated carbon based electrodes, it is greater than 67%. Kilowatt scale energy storage system of PSB battery also has been developed. The test results prove that this battery provides excellent series-parallel characteristic, which makes it easy to scale up. Therefore the technology is most suitable for utility scale energy storage. To meet the increased demands of national energy resources, electricity supply and national defense, directions of R&D on the key materials are given.更多还原