摘要
以纯度98%的偏钒酸铵为原料,采用“再溶-净化除杂-铵盐沉钒-洗涤-煅烧-氢气还原-加压溶解”工艺,可制得全钒液流电池用3.5价钒电解液。单因素条件试验结果表明,在优化条件下,获得的V_(2)O_(5)产品纯度为99.82%,杂质含量满足《五氧化二钒》(YB/T 5304—2017)的标准要求。在优化条件下,V_(2)O_(5)进一步采用氢气还原-加压溶解工艺进行处理,可制得3.5价钒电解液,钒和硫酸根浓度分别为1.71 mol/L和4.35 mol/L,杂质含量满足《全钒液流电池用电解液》(GB/T 37204—2018)的标准要求。
Taking ammonium metavanadate with a purity of 98%as the raw material,a 3.5 valent vanadium electrolyte for all vanadium flow batteries can be prepared by using the process of“redissolve-impurity removal with purificationvanadium precipitation with ammonium salt-washing-calcination-H2 reduction-pressure dissolution”.The single factor conditional test results show that under optimized conditions,the purity of V_(2)O_(5) product obtained is 99.82%,the impurity content meets the standard requirements of“Vanadium Pentoxide”(YB/T 5304—2017).Under optimized conditions,V_(2)O_(5) is further treated by using a H2 reduction-pressure dissolution process to produce a 3.5 valent vanadium electrolyte,and the concentrations of vanadium and sulfate ions are 1.71 mol/L and 4.35 mol/L respectively,and the impurity content meets the standard requirements of“Electrolytes for All Vanadium Flow Batteries”(GB/T 37204—2018).
作者
王为振
高崇
王治飞
黄海辉
王岩
WANG Weizhen;GAO Chong;WANG Zhifei;HUANG Haihui;WANG Yan(BGRIMM Technology Group,Beijing 100160,China)
出处
《中国资源综合利用》
2023年第10期5-10,15,共7页
China Resources Comprehensive Utilization
基金
钒钛国家重点实验室的开放基金资助项目(2021P4FZG02A)。
关键词
偏钒酸铵
五氧化二钒
钒电解液
净化除杂
铵盐沉钒
氢气还原
ammonium metavanadate
V2O5
vanadium electrolyte
impurity removal with purification
vanadium precipitation with ammonium salt
H2 reduction
