Structural, Thermal and Electrical Conduction Studies on LiNiPO4: RE (RE= La, Nd) Prepared by Polyol Method

Structural, Thermal and Electrical Conduction Studies on LiNiPO4: RE (RE= La, Nd) Prepared by Polyol Method

S. Karthickprabhu G. Hirankumar S. Thanikaikarasa P. J. Sebastiane*

Energy Materials Research Laboratory, Department of Physics, Kalasalingam University, Krishnankoil , 626 126, India.

Centre for Scientific and Applied Research, School of Basic Engineering and Sciences, PSN College of Engineering and Technology, Melathediyoor, 627 152, TN, India

Instituto de Energias Renovables-UNAM, 62580, Temixco, Morelos, Mexico.

Corresponding Author Email: ,
January 03, 2014
June 29, 2014
October 03, 2014
| Citation

LiNiPO4 and LiNiPO4: xRE (RE = La, Nd) (x = 0.01 mol%, 0.03 mol%, 0.05 mol%, 0.07 mol%, 0.09 mol%) samples have been prepared by polyol method using 1, 2 propanediol as a polyol medium. XRD patterns have indicated that the pristine LiNiPO4 is well crystallized with orthorhombic structure pnma space group and structurally stable compound upon doping of rare earth metals. Functional group analyses have been carried out by FTIR spectroscopic analysis. TG analysis shows that no weight loss has been observed above 600°C for both Nd3+ and La3+ doped LiNiPO4. The morphology of the samples was analyzed through Scanning Electron Microscopy. The conductivity of LiNiPO4 was found to be improved by 2 orders by doping of rare earth ions. It is found that lanthanum is an excellent dopant for LiNiPO4 than neodymium due to the formation of free ion sites which causes the enhancement of conductivity. Dielectric studies support that doping of La3+ is favorable for conduction compared with Nd3+ doping.


LiNiPO4, Li-ion battery, electrical conductivity, dielectric properties

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

The financial support from BRNS, Government of India, DAE, research project 2010/20/37P/3/BRNS/1062 is gratefully acknowledged.One of the authors (S.Karthickprabhu) thanks the BRNS, DAE, Government of India, for the award of Junior Research Fellowship.


[1] J. Wolfenstine, J. Allen, Journal of Power Sources, 136, 150 (2004).

[2] T.R Kim, D.H. Kim, H.W. Ryu, J.H. Moon, J. Phys. Chem. Solids, 68, 1203 (2007).

[3] C.V. Ramana, A. Ait-Salah, S. Utsunomiya, U. Becker, Chem. Mater, 18, 3788 (2006).

[4] Thierry Drezen, Nam-Hee Kwon, Paul Bowen, Ivo Teerlinck, Motoshi Isono, Ivan Exnar, J. Power Sources, 174, 949 (2007).

[5] K. Ressouli, K, Benkhouja, J.R. Ramos-Barrado, C. Julien, Mater. Sci and Eng. B, 98, 185 (2003).

[6] J. Wolfenstine, J. Allen, J. Power Sources, 142, 389 (2005).

[7] Natalia N. Bramnik, Kirill G. Bramnik, Carsten Baehtz, Helmut Ehrenberg, J. Power Sources, 145, 74 (2005).

[8] Sung-yoon chung, Jason T. Bloking, Yet-ming Chiang, Nature Materials, 1, 123 (2002).

[9] P. Subramaniya Herle, B. Ellis, N. Coombs, L.F. Nazar, Nature Materials, 3, 147 (2004).

[10] J. Wolfenstine, U. Lee, B. Poese, J.L. Allen, J. Power Sources, 144, 226 (2005).

[11] LUO Shaohua, TIAN Yong, LI Hui, SHI Kejie, TANG Zilong, J. Rare Earths, 28, 439 (2010).

[12] George Ting-kuo Fey, Chi-sun Wu, Pure & Appl. Chem., 69, 2329 (1997).

[13] M. Prabu, S. Selvesekarapandian, A.R. Kulkarni, S. Karthikeyan, C. Sanjeeviraja, Trans. Nonferrous. Met. Soc. China, 22, 342 (2012).

[14] Sathiyaraj Kandhasamy, Kalaiselvi Nallathamby, Manickam Minakshi, Progress in Solid State Chemistry, 40, 1 (2012).

[15] Jiezi Hu, Jain Xie, Xinbing Zhao, Hongming, Xing Zhou, Gaoshao Cao, Jiangping Tu, J. Mater. Sci. Technol., 25, 405 (2009).

[16] S. Karthickprabhu, G. Hirankumar, A. Maheswaran, R.S. Daries Bella, C. Sanjeeviraja, J. Alloys compd., 548, 65 (2013).

[17] C.M. Julien, A. Mauger, K. Zaghib, R. Veillette, H. Groult, Ionics, 18, 625 (2012).

[18] A. Rajalakshmi, V.D. Nithya, K. Karthikeyan, C. Sanjeeviraja, Y.S. Lee, R. Kalai Selvan, J. Sol-Gel Sci. Technol., DOI 10.1007/s10971-012-2952-y.

[19] A. Ben Rhaiem, F. Hlel, K. Guidara, M. Gargouri, J. Alloys Compd., 463, 440 (2008).

[20] Hiroshi Yamamura, Saori Takeda, Katsuyoshi Kakinuma, Solid State Ionics, 178, 1059 (2007).

[21] M. Vijayakumar, G. Hirankumar, M.S. Bhuvaneswari, S. Selvasekarapandian, J. Power Sources, 117, 143 (2003).

[22] A. Sheoran, S. Sanghi, S. Rani, A. Agarwal, V.P. Seth, J. Alloys Compd,, 475, 804 (2009).