ZnO修饰对Fe1.5P电化学性能的影响

doi:10.3724/SP.J.1077.2010.00877

无机材料学报 ›› 2010, Vol. 25 ›› Issue (8): 877-881.DOI: 10.3724/SP.J.1077.2010.00877 CSTR: 32189.14.SP.J.1077.2010.00877

ZnO修饰对Fe_1.5P电化学性能的影响

李秀丽, 王贵欣, 闫康平, 刘睿

(四川大学化学工程学院, 成都 610065)

收稿日期:2009-12-15 修回日期:2010-01-31 出版日期:2010-08-20 网络出版日期:2010-07-19
基金资助:
四川大学青年基金(0030705505040)

Effects of ZnO Modification on the Electrochemical Performance of Fe_1.5P

LI Xiu-Li, WANG Gui-Xin, YAN Kang-Ping, LIU Rui

(School of Chemical Engineering, Sichuan University, Chengdu 610065, China)

Received:2009-12-15 Revised:2010-01-31 Published:2010-08-20 Online:2010-07-19

摘要/Abstract

摘要：

用流变相法制备了ZnO修饰Fe_1.5P电极材料, 用X射线衍射仪对产物进行成分分析, 用透射电镜表征形貌, 用恒流充放电法、循环伏安法和电化学阻抗谱法研究了ZnO修饰对Fe_1.5P电化学性能的影响. 实验结果表明: ZnO修饰能够提高Fe_1.5P的倍率特性, 使Fe_1.5P的首次放电容量提高~69.7％, 达到837.5 mAh/g, 经过215次循环后, 将Fe_1.5P在12 C倍率下的放电容量提高~144.3%, 而且将Fe_1.5P在0.1 C倍率下的恢复放电容量提高~330％; 另外, ZnO修饰Fe_1.5P的SEI膜阻抗R_SEI、电荷传递阻抗R_d和Li⁺扩散的Warburg阻抗Wb分别降低~87.9％、~87％和~13.2％, 将锂离子扩散系数提高~86.6%.

关键词: ZnO, Fe_1.5P, 电化学性能, 流变相法

Abstract:

ZnO-modified Fe_1.5P powders were synthesized successfully via a rheological phase method. X-ray diffractometry (XRD) was utilized to analyze the composition. TEM was used to characterize the morphology. The effects of ZnO modification on the electrochemical performance of the Fe_1.5P were investigated using constant current charge/discharge method, cyclic voltammogram, and electrochemical impedance spectrograph (EIS). The experimental results show that ZnO modification can enhance the rate performance of Fe_1.5P. The first discharge capacity of the ZnO-modified Fe_1.5P is 837.5mAh/g, and 69.7% higher than that of the pristine Fe_1.5P. After 215 cycles, the discharge capacity of the Fe_1.5P at 12C rate is increased to 144.3%. Furthermore, ZnO modification improve 330% of the recovery discharge capability of the Fe_1.5P at 0.1C rate. In addition, in comparison with the pristine Fe_1.5P, ZnO modification reduce 87.9% of the SEIingd SEI film resistance R_SEI, 87% of the charge transfer resistance R_d, and 13.2% of the Warburg impedance W_b from the diffusion of lithium ions, while can improve 86.6% of the diffusion efficiency of lithium ions.

Key words: ZnO, Fe_1.5P, electrochemical performance, rheological phase method

中图分类号:

TM911

李秀丽, 王贵欣, 闫康平, 刘睿. ZnO修饰对Fe_1.5P电化学性能的影响[J]. 无机材料学报, 2010, 25(8): 877-881.

LI Xiu-Li, WANG Gui-Xin, YAN Kang-Ping, LIU Rui. Effects of ZnO Modification on the Electrochemical Performance of Fe_1.5P[J]. Journal of Inorganic Materials, 2010, 25(8): 877-881.

参考文献

[1]Silva D C C, Crosnier O, Ouvrard G, et al. Reversible lithium uptake by FeP2. Electrochem. Solid-State Lett., 2003, 6(8): A162-A165.
[2]Boyanov S, Bernardi J, Gillot F, et al. FeP: another attractive anode for the Li-ion battery enlisting a reversible two-step insertion/conversion process.Chem. Mater,2006, 18(15):3531-3538
[3]Boyanov S, Womes M, Monconduit L, et al. Mossbauer spectroscopy and magnetic measurements as complementary techniques for the phase analysis of FeP electrodes cycling in Li-ion batteries.Chem. Mater,2009, 21(15):3684-3692
[4]Huang L, Zheng X M, Wu Y S, et al. Electrodeposition and lithium storage performance of novel three-dimensional porous Fe–Sb–P amorphous alloy electrode.Electrochem. Commun,2009, 11(3):585-588
[5]Fu L J, Liu H, Zhang H P, et al. Synthesis and electrochemical performance of novel core/shell structured nanocomposites.Electrochem. Commun,2006, 8(1):1-4
[6]Yan G F, Fang H S, Li G S, et al. Improved electrochemical performance of Mg-doped ZnO thin film as anode material for lithium ion batteries. Chinese J. Struct. Chem., 2009, 28(4): 409-413.
[7]Sun Y K, Hong K J, Prakash J, et al. Electrochemical performance of nano-sized ZnO-coated LiNi0.5Mn1.5O4 spinel as 5 V materials at elevated temperatures. Electrochem. Commun., 2002, 4(4): 344-348.
[8]许惠, 钟辉(XU Hui, et al). 流变相-喷雾干燥法合成LiCo0.3Ni0.7O2正极材料的研究. 无机材料学报(Journal of Inorganic Materials), 2004, 19(3): 497-502.
[9]Chang C X, Xiang J F, Shi X X, et al. Rheological phase reaction synthesis and electrochemical performance of Li3V2(PO4)3/carbon cathode for lithium ion batteries.Electrochim. Acta,2008, 53 (5):2232-2237
[10]李思温, 杨维慎, 林励吾. 两个新的具有高透氧能力的氧化物. 科学通报, 1997, 42(6): 615-616.
[11]Dean J A. 兰式手册, 15版. New York: McGraw-Hill,1999: 6. 81- 6.123.
[12]Barral G., Diard J P, Gorrec B L, et al. Determination of the diffusion coefficient of an inserted species by impedance spectroscopy: application to the H/HxNb2O5 system. J. Appl. Electrochem., 1993, 23(2): 93-97.
[13]Myung S T, Komaba S, Hirosaki N, et al. Emulsion drying synthesis of olivine LiFePO4/C composite and its electrochemical properties as lithium intercalation material.Electrochim. Acta,2004, 49(24):4213-4222

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ZnO修饰对Fe_1.5P电化学性能的影响

Effects of ZnO Modification on the Electrochemical Performance of Fe_1.5P

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ZnO修饰对Fe1.5P电化学性能的影响

Effects of ZnO Modification on the Electrochemical Performance of Fe1.5P

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ZnO修饰对Fe_1.5P电化学性能的影响

Effects of ZnO Modification on the Electrochemical Performance of Fe_1.5P