(1. 廣西大學 廣西有色金屬及特色材料加工重點實驗室，南寧 530004；
2. 廣西大學 資源環(huán)境與材料學院，南寧 530004)
摘 要: 采用電化學循環(huán)伏安法、恒電位沉積法和電化學石英微晶天平(EQCM)研究錸在酸性溶液中的電沉積行為。結果表明：當溶液接近中性(pH=6)時，金屬錸難以被還原出來；當溶液酸度較低(pH=3)時，電沉積產物含有錸的氧化物(ReO3)；當溶液酸度較高時(pH=1)，電沉積產物為金屬錸，所得產物的微觀形貌中存在明顯的裂紋；且隨著溶液中 濃度的增加，錸的電沉積得到促進。在1.0 mmol/L (pH=1)溶液中錸的沉積電位為-0.68 V。通過恒電位沉積得出不同條件下的電解效率，最高可達5.62%。
關鍵字: 錸；電沉積；電流效率；石英微晶天平
（1. Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University, Nanning 530004, China;
2. School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China）
Abstract:The electrodeposition of rhenium from acidic solution was studied by cyclic voltammetry, potentiostatic electrodeposition and electrochemical quartz microcrystal balance (EQCM). The results show that metal rhenium is difficult to be reduced from near neutral solutions (pH=6); the electrodeposition product contains rhenium oxide (ReO3) from solutions with low acidity (pH=3); In solutions with high acidity (pH=1), the electrodeposition product is metallic rhenium, increasing the concentration of can promote the electrodeposition of rhenium, while there are obvious cracks in the morphology of metal rhenium. The electrodeposition potential of rhenium is determined to be -0.68 V in solutions containing 1.0 mmol/L (pH=1). Current efficiency for different conditions is up to 5.62%, obtained by potentiostatic electrodeposition.
Key words: rhenium; electrodeposition; current efficiency; electrochemical quartz microcrystal balance
