Spectrophotometry Analysis of Different Valence State of Vanadium in Vanadium Battery Electrolyte
CHEN Fu-yu1, CHEN Hui2, HOU Shao-yu2, LIU Jian-guo1*, YAN Chuan-wei1
1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 2. Shenyang Ke-Jin New Material Co., Ltd., Shenyang 110015, China
Abstract：In the present paper, oxalic acid was used to reduce V(Ⅴ) ion to V(Ⅳ) ion, then its complex with V(Ⅳ) was formed. By this method, four valence states of vanadium ions had different characteristic absorption peaks in the UV-Visible range. Based on these characteristic absorption peaks, qualitative and quantitative spectrophotometric analysis methods for different valence states of vanadium in vanadium battery electrolyte were established. The results showed that the related coefficients of four standard curves of different valence states were greater than 0.999 0, linearity ranges were 0.326~2.445, 0.326~2.445, 0.720~5.403, and 1.784~13.437 g·L-1, respectively. The measurement of samples suggested that the spectrophotometric analysis method was suitable for analyzing the concentration of valence states of vanadium with the RSDs (n=6) in the range of 0.594%~3.535%.
陈富于1，陈 晖2，侯绍宇2，刘建国1*，严川伟1 . 钒电池电解液中不同价态钒的分光光度分析[J]. 光谱学与光谱分析, 2011, 31(10): 2839-2842.
CHEN Fu-yu1, CHEN Hui2, HOU Shao-yu2, LIU Jian-guo1*, YAN Chuan-wei1 . Spectrophotometry Analysis of Different Valence State of Vanadium in Vanadium Battery Electrolyte . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(10): 2839-2842.
[1] Zhong S, Skyllas-Kazacos M. Journal of Power Sources, 1992, 39: 1. [2] Fabjan Ch., Garche J, Harrer B, et al. Electrochimica Acta, 2001, 47: 825. [3] Iwasa S, Wei Y, Fang B, et al. Battery Bimonthly, 2003, 33(6): 339. [4] Oriji G, Katayama Y, Miura T. Electrochimica Acta, 2004, 49: 3091. [5] Gattrell M, Park J, MacDougall B, et al. Journal of the Electrochemical Society, 2004, 151: A123. [6] Oriji G, Katayama Y, Miura T. Journal of Power Sources, 2005, 139: 321. [7] Chakrabarti M H, Dryfe R A W, Roberts E P L. Electrochimica Acta, 2007, 52: 2189. [8] Wen Y H, Cheng J, Zhang H M, et al. Batttery Bimonthly, 2008, 38: 247. [9] Al-Fetlawi H, Shah A A, Walsh F C. Electrochimica Acta, 2009, 55: 78. [10] Al-Fetlawi H, Shah A A, Walsh F C. Electrochimica Acta, 2010, 55: 3192. [11] Shah A A, Al-Fetlawi H, Walsh F C. Electrochimica Acta, 2010, 55: 1125. [12] PENG Sheng-qian, CAI Shi-ming, XU Guo-zhen, et al(彭声谦, 蔡世明, 许国镇, 等). Physical Testing and Chemical Analysis(Part B：Chemical Analysis)(理化检验·化学分册), 1998, 34(7): 291. [13] TIAN Bo, YAN Chuan-wei, QU Qing, et al(田 波, 严川伟, 屈 庆，等). Battery Bimonthly(电池), 2003, 33(4): 261. [14] LIU Su-qin, SANG Yu, LI Lin-de, et al(刘素琴, 桑 玉, 李林德, 等). Physical Testing and Chemical Analysis(Part B：Chemical Analysis)(理化检验·化学分册), 2007, 43(12): 1077. [15] Wuhan University(武汉大学). Analytical Chemistry(Ver.4)(分析化学, 第4版). Beijing: Higher Education Press(北京：高等教育出版社), 2000. 175. [16] CHEN Guo-zhen, HUANG Zhi-xian, LIU Wen-yuan, et al(陈国珍, 黄贤智, 刘文远，等). Ultraviolet-Visisble Light Spectrophotometric Method(First Book)[紫外-可见分光光度法(上册)]. Beijing: Atomic Energy Press(北京：原子能出版社), 1987. 45.
