Ce对铝-空气电池阳极电化学活性及自腐蚀的影响

摘要为了研究稀土元素对铝-空气电池阳极合金的影响，熔炼并制备了Al-Ce合金，通过测试合金的极化曲线，利用率以及交流阻抗等，研究了其在3 mol/L的KOH、质量分数为3%的NaCl溶液中的电化学性能。采用扫描电镜对在合金放电后的形貌进行观察，并使用能量散射X射线谱对合金表面进行面扫描分析。结果表明：稀土元素Ce的加入可以提高阳极电化学活性和利用率，但过量的Ce会导致电化学活性降低以及点腐蚀。随着Ce含量的增加，合金开路电位负移，电流密度增大，利用率升高。当Ce的质量分数为1%时，合金具有最佳的电化学活性以及最高的利用率，-1.2 V处的电流密度为-103.90 mA·cm^-2，利用率为72.3%。

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	孟旭
	李耀宗
	王益成
	张立静
	王为

关键词：铝-空气电池；铝阳极；稀土元素；电化学活性

Abstract： Al-Ce alloys were smelted to research the effects of rare earth element on aluminum alloy anodes for aluminum-air battery. The electrochemical activity and self-corrosion were studied by the measurement technique of polarization curve, utilization ratio, and electrochemical impedance spectroscopy in 3 mol/L KOH, 3%NaCl electrolyte. The surface of Al-Ce alloy after discharging was analyzed by energy dispersive X-ray detector and scanning electron microscope. The results show that the addition of Ce increases the electrochemical activity and utilization ratio. With the increasing of Ce, the open circuit potential was more negative, the utilization ratio and the current density at -1.2 V were improved. When 1% Ce element was added, the best current density at -1.2 V(-103.90 mA·cm^-2) and the highest utilization ratio (72.3%) were obtained.

Keywords： aluminum-air battery； aluminum alloy anodes； rare earth element； electrochemical activity

Received 2016-07-15;

Fund:国家自然科学基金项目（21276181）。

Corresponding Authors: 王为,E-mail:wwangg@tju.edu.cn Email: wwangg@tju.edu.cn

About author: 孟旭(1993-),男,硕士研究生,现从事铝-空气电池方面的研究。

引用本文:

孟旭, 李耀宗, 王益成, 张立静, 王为.Ce对铝-空气电池阳极电化学活性及自腐蚀的影响[J]. 化学工业与工程, 2018,35(6): 26-31

Meng Xu, Li Yaozong, Wang Yicheng, Zhang Lijing, Wang Wei.Effects of Ce on Electrochemical Activity and Self-Corrosion of Aluminum Alloy Anode for Aluminum-Air Battery[J]. Chemcial Industry and Engineering, 2018,35(6): 26-31

[1] Wang H, Leung D Y C, Leung M K H. Energy analysis of hydrogen and electricity production from aluminum-based processes[J]. Applied Energy, 2012, 90(1):100-105
[2] Egan D R, León C P D, Wood R J K, et al. Developments in electrode materials and electrolytes for aluminium-air batteries[J]. Journal of Power Sources, 2013, 236(25):293-310
[3] 王剑. 电池用铝合金阳极材料的开发[J]. 铝加工, 1998, 21(2):56-59 Wang Jian. Development of aluminum alloy anode material for battery[J]. Aluminium Fabrication, 1998, 21(2):56-59(in Chinese)
[4] 康福伟, 王丽萍, 张显有, 等. 微量稀土元素对工业纯铝电阻率的影响[J]. 哈尔滨理工大学学报, 2003, 8(6):112-114 Kang Fuwei,Wang Liping,Zhang Xianyou, et al. Effects of microscale rare earth elements on electrical resistiviy of industral pure aluminium[J]. Journal of Harbin University of Science and Technology,2003,8(6):112-114(in Chinese)
[5] Wang D, Li H, Liu J, et al. Evaluation of AA5052 alloy anode in alkaline electrolyte with organic rare-earth complex additives for aluminium-air batteries[J]. Journal of Power Sources, 2015, 293:484-491
[6] 齐公台, 张盈盈. 电池用含稀土铝合金阳极性能的研究[J]. 稀有金属, 2004, 28(6):1010-1014 Qi Gongtai,Zhang Yingying. RE-Bearing aluminum alloys anode for alkaline battery[J]. Chinese Journal of Rare Metals, 2004, 28(6):1010-1014(in Chinese)
[7] 唐有根, 韩红涛, 谢正和, 等. 稀土Ce掺杂铝合金阳极的结构和电化学性能[J]. 中南大学学报:自然科学版, 2006, 37(4):737-741 Tang Yougen,Han Hongtao,Xie Zhenghe, et al. Structure and electrochemical performance of Al alloy anode doped with rare earth Ce[J]. Journal of Central South University:Science and Technology, 2006, 37(4):737-741
[8] 霍佳磊,王为. 葡萄糖对铝合金电极电化学活性及自腐蚀的影响[J]. 中国表面工程, 2016, 29(2):37-42 Huo Jialei, Wang Wei. Effects of glucose on electrochemical activity and self-corrosion of aluminum alloy anode[J]. China Surface Engineering,2016,29(2):37-42(in Chinese)
[9] Ma J, Wen J, Gao J, et al. Performance of Al-1Mg-1Zn-0.1Ga-0.1Sn as anode for Al-air battery[J]. Electrochimica Acta, 2014, 129:69-75
[10] Cho Y J, Park I J, Lee H J, et al. Aluminum anode for aluminum-air battery-Part I:Influence of aluminum purity[J]. Journal of Power Sources, 2015, 277:370-378