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| Discharge Property and Voltage Delay of AZ31B Mg Alloy in Mg(NO3)2/Mg(ClO4)2 Composite Electrolyte |
Lin CHEN1,2( ), Furong ZHONG1, Jinlong ZAN1 |
1.College of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong 643000, China;
2.Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science & Engineering, Zigong 643000, China; |
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Abstract In neutral and acidic solution, Mg reacts with water and release hydrogen, which reduces the utilization rate of electrode and brings difficulties to the assembly of the battery. In the alkaline solution, the Mg-surface would form a dense protective film, which make the electrode passivation and prevents discharging. In order to develop proper Mg-alloy suitable for battery electrolytes, the discharge properties and voltage delay of AZ31B Mg-alloy in compound electrolytes with different volume ratio of Mg(NO3)2 to Mg(ClO4)2 were studied by means of chronopotentiometry and electrochemical impedance spectroscopy and the corrosion products-films formed on the surface of AZ31B Mg-alloy were examined by means of SEM and infra-red spectrometer. Results show that in solutions with volume ratios of Mg(NO3)2 to Mg(ClO4)2 are 72:28 and 74:26 respectively, the discharge curves of AZ31B Mg-alloy are smooth and steady with stable potentials about -1.24 V (2.5 and 6 mA·cm-2) and the delay time 5~8 s. Chemical groups of the corrosion products-film after discharge is the same as before. However, the surface film of corrosion products has been destroyed by discharge process, resulting in continuous beads-like corrosion pits, therewith the film resistance would disappear and the charge transfer resistance decreases to 375 Ω·cm2.
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Received: 25 March 2017
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| Fund: Supported by Talent Introduction Project of Sichuan University of Science & Engineering (2015CR58) |
| [1] | Mu W Y, Li Z X, Du J H, et al.Development and application of magnesium batteries[J]. Mater. Rev., 2011, 25(13): 35(慕伟意, 李争显, 杜继红等. 镁电池的发展及应用[J]. 材料导报, 2011, 25(13): 35) | | [2] | Yao Y F, Chen C G, Liu Y P, et al.Research progress of magnesium battery[J]. Mater. Rev., 2009, 23(19): 119(尧玉芬, 陈昌国, 刘渝萍等. 镁电池的研究进展[J]. 材料导报, 2009, 23(19): 119) | | [3] | Yang Q L, Chen L, Xu J, et al.Study of the corrosion and surface film growth on AZ63 magnesium alloy in MgSO4 solution[J]. J. Electrochem. Soc., 2017, 164(6): C324 | | [4] | Yang Q L, Xu J, Chen L, et al.The effects of NaHCO3 on the voltage delay of Mg cell with AZ31B magnesium alloy in Mg(ClO4)2 electrolytic solution[J]. J. Electrochem. Soc., 2017, 164(4): A630 | | [5] | Xu J, Yang Q L, Javed M S, et al.The effects of NaF concentration on electrochemical and corrosion behavior of AZ31B magnesium alloy in a composite electrolyte[J]. RSC Advances., 2017, 7(10): 5880 | | [6] | Sivashanmugam A, Kumar T P, Renganathan N G, et al.Performance of a magnesium- lithium alloy as an anode for magnesium batteries[J]. J. Appl. Electrochem., 2004, 34(11): 1135 | | [7] | Gao C Y, Lu Y H, Xu H B.Electrochemical properties of Mg-Ga-Hg alloys applied in dissolved-oxygen seawater battery[J]. Period. Ocean Univ. China, 2015, 45(10): 69(高春燕, 芦永红, 徐海波. 海水电池用Mg-Ga-Hg合金的电化学性能[J]. 中国海洋大学学报, 2015, 45(10): 69) | | [8] | Si Y J, Xiong Z P, Chen C G, et al.Inhibiting ability of sodium dodecyl benzene sulfonate to AZ31 magnesium alloy[J]. Rare Met. Mater. Eng., 2007, 36(12): 2244(司玉军, 熊中平, 陈昌国等. 十二烷基苯磺酸钠对AZ31镁合金缓蚀作用研究[J]. 稀有金属材料与工程, 2007, 36(12): 2244) | | [9] | Chen C G, Si Y J, Yu D M, et al.Electrochemical behavior of AZ31 magnesium alloy in MgSO4 solution[J]. Chin. J. Nonferrous Met., 2006, 16(5): 781(陈昌国, 司玉军, 余丹梅等. AZ31镁合金在MgSO4溶液中的电化学行为[J]. 中国有色金属学报, 2006, 16(5): 781) | | [10] | Shi Y G, Zhang Y, Hu S F, et al.Electrochemical behavior of AZ31 alloy as anode material for magnesium battery[J]. Corros. Prot., 2012, 33(12): 1051(史永刚, 张娅, 胡少峰等. AZ31作为镁电池负极材料的电化学性能[J]. 腐蚀与防护, 2012, 33(12): 1051) | | [11] | Xiong Y Y, Zhang Y, Hu S F, et al.Effects of additions of La(CH3COO)3 and NaF on electrochemical behavior of AZ31 alloys in Mg(ClO4)2 solution[J]. J. Chin. Soc. Corros. Prot., 2013, 33(3): 241(熊媛媛, 张娅, 胡少峰等. 添加剂La(CH3COO)3和NaF对AZ31在Mg(ClO4)2溶液中电化学性能的影响[J]. 中国腐蚀与防护学报, 2013, 33(3): 241) | | [12] | Kumar B V R, Sathyanarayana S. The delayed action of magnesium anodes in primary batteries: Part I. Experimental studies[J]. J. Power Sources, 1983, 10(3): 219 | | [13] | Chen L, Chen C G, Wang N N, et al.Electrochemical and structural characterization of AZ63 alloy surface film in MgSO4 solution[J]. J. Appl. Electrochem., 2014, 44(7): 773 | | [14] | Ma Z Q, Pang X, Zuo L, et al.Mechanism of activation of anode of Mg alloy applied in seawater battery[J]. Surf. Technol., 2008, 37(1): 5(马正青, 庞旭, 左列等. 镁海水电池阳极活化机理研究[J]. 表面技术, 2008, 37(1): 5) | | [15] | Deng L, Chen L, Yang Q L, et al.The Influence of pulse current on the voltage delay of AZ21 magnesium electrodealloy[J]. Chin. J. Eng., 2015, 37(10): 1358(邓玲, 陈琳, 杨巧玲等. 脉冲电流对AZ21镁电极电压滞后的影响[J]. 工程科学学报, 2015, 37(10): 1358) |
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