AlN-Fe纳米复合薄膜：一种新型锂离子电池负极材料

引用本文: 牛晓叶, 杜小琴, 王钦超, 吴晓京, 张昕, 周永宁. AlN-Fe纳米复合薄膜：一种新型锂离子电池负极材料[J]. 物理化学学报, 2017, 33(12): 2517-2522. doi: 10.3866/PKU.WHXB201706162 shu

Citation: NIU Xiao-Ye, DU Xiao-Qin, WANG Qin-Chao, WU Xiao-Jing, ZHANG Xin, ZHOU Yong-Ning. AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries[J]. Acta Physico-Chimica Sinica, 2017, 33(12): 2517-2522. doi: 10.3866/PKU.WHXB201706162 shu

AlN-Fe纳米复合薄膜：一种新型锂离子电池负极材料

复旦大学材料科学系, 上海 200433
基金项目:
国家自然科学基金（51502039）资助项目

摘要: 采用脉冲激光沉积技术（PLD）制备了不同比例的AlN-Fe纳米复合薄膜（AlN和Fe摩尔比为3：1；2：1；1：1；1：2），首次研究了其作为锂离子电池负极材料的电化学行为。发现当AlN和Fe的比例为2：1时，复合薄膜具有最佳的电化学性能。在500 mA·g^-1电流密度下，AlN-Fe （2：1）经过100次循环充放电后容量仍能保持510 mAh·g^-1。对其电化学反应机理研究发现，在放电过程中，AlN-Fe纳米复合薄膜中的AlN发生分解，AlN-Fe生成LiAl合金和Li₃N。纳米Fe颗粒的引入有效提高AlN的电化学活性；在充电过程中，部分Li₃N与Fe纳米颗粒反应生成了Fe₃N，其余部分Li₃N重新生成AlN。随后的充放电过程由Fe₃N、AlN和Al三者与Li的可逆反应共同参与，保证了AlN-Fe纳米复合薄膜优异的电化学性能。该研究为设计开发新型锂离子电池电极材料提供了一种新的思路。

关键词:

English

AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries

Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
Received Date: 15 May 2017
Revised Date: 12 June 2017
Fund Project:
The project was supported by the National Natural Science Foundation of China (51502039).

Abstract: AlN-Fe nanocomposite thin films with different AlN-Fe ratio were prepared by pulsed laser deposition (PLD).They were investigated as new anode materials for lithium ion batteries for the first time.The AlN-Fe nanocomposite films with an AlN/Fe ratio of 2:1 show the best electrochemical performance.They exhibit a specific capacity of 510 mA·g^-1 after 100 cycles at a rate of 500 mA·g^-1.Further,the study of the electrochemical reaction mechanism of the AlN-Fe nanocomposite thin films with lithium reveals that AlN decomposes during the discharge process to form the LiAl alloy and Li₃N.During recharge,a part of Li₃N reacts with Fe to form Fe₃N,and the rest reacts with Al to form AlN.In subsequent cycles,all of Fe₃N,AlN,and Al react with Li reversibly,contributing to the reversible charge-discharge processes and to the superior electrochemical performance of AlN-Fe nanocomposite thin films.Thus,this study provides a new perspective to design advanced electrode materials for lithium-ion batteries.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

AlN-Fe纳米复合薄膜：一种新型锂离子电池负极材料

English

AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries

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中国化学会秘书处

AlN-Fe纳米复合薄膜：一种新型锂离子电池负极材料

English

AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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