Novel Synthesis of Plate-like LiFePO4 by Hydrothermal Method

Novel Synthesis of Plate-like LiFePO4 by Hydrothermal Method

Yi-Jie Gu* Chang-Jiao Li Long Cheng Peng-Gong Lv Fu-Jie Fu Hong-Quan Liu Jian-Xu Ding* Yan-Ming Wang Yun-Bo Chen Hai-Feng Wang Shun-Wei Fan

College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China

Henan ZhongPingHanBo New Energy Co., Ltd., Pingdingshan 467000, China

Advanced Manufacture Technology Center, China Academy of Machinery Science and Technology, Beijing 100044, China

Rizhao Huaxian New Energy Co., Ltd., Rizhao 276826, China

Corresponding Author Email: 
guyijie@sdust.edu.cn, dingjianxu@126.com
Page: 
33-36
|
DOI: 
https://doi.org/10.14447/jnmes.v19i1.345
Received: 
01 October 2015
|
Accepted: 
09 December 2015
|
Published: 
08 February 2016
| Citation

OPEN ACCESS

Abstract: 

Lithium iron phosphate (LiFePO4) was prepared by hydrothermal synthesis method using FeSO4·7H2O and LiH2POas resource of Li and Fe. The ratio of Li: Fe was maintained 1:1. The results suggested that pH value played a crucial role in the synthesis of LiFePO4, especially for the generation of impurities. We found that adding citric acid to the precursor was an effective way for chelating ferrous ions, thereby preventing the undesirable iron compounds during hydrothermal treatment. The particle morphology and the crystal orientation of the prepared LiFePO4 particles were investigated by the XRD and SEM results. The X-ray diffraction pattern of the samples indicated that single-phase LiFePO4 were successfully synthesized by hydrothermal method with a stoichiometric 1:1 ratio of Li :Fe.

Keywords: 

hydrothermal synthesis, single phase LiFePO4, citric acid

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
5. Acknowledgements
  References

[1] Chen H, Chen YF, Gong WQ, Xiang KX, Sun B, Liu JH., Ma-ter. Lett., 65, 559 (2011).

[2] Yang H, Wu XL, Cao MH, Guo YG. J. Phys. Chem. C., 113, 3345 (2009).

[3] Mi CH, Cao GS, Zhao XB., Mater. Lett., 59, 127 (2005).

[4] Gu YJ, Zeng CS, Wu HK, Cui HZ, Huang XW et al., Materials Letters, 61, 4700 (2007).

[5] Ni JF, Zhou HH, Chen JT, Zhang XX., Mater. Lett., 61, 1260 (2007).

[6] Gao XG, Hu GR, Peng ZD, Du K., Electrochimica Acta, 54, 4777 (2009).

[7] Aimable A, Aymes D, Bernard F, Le F. Crash., Solid State Ionics, 180, 861 (2009).

[8] Ogihara T, Kodera T, Myoujin K, Motohira S., Mater. Sci. Eng. B, 161, 109 (2009).

[9] Zhang P, Li X, Luo Z, Huang X, Liu J, Xu Q, et al., J. Alloys Compound, 467, 390 (2009).

[10]Liu Z, Zhang X, Hong L., J. Appl. Electrochem., 39, 2433 (2009).

[11]Lee J, Teja Amyn S., Mater. Lett., 60, 2105 (2006).

[12]Kim DH, Kim, J. Electrochem. Solid State Lett., 9, A439, (2006).

[13]J. Chen, S. Wang, and M.S. Whittingham, J. Power Sources, 174, 442 (2007).

[14]Song Qingzhu, Ou Xiuqin,Wang Li, Liang Guangchuan, Wang Zuorui, J. Power Sources, 1398, 1402 (2011).