Microstructure Effects on Electrochemical Characteristics for Plasma Spray Deposited LiFePO4 Films
DOI:
https://doi.org/10.6000/2369-3355.2014.01.01.3Keywords:
Plasma spray, LiFePO4 films, Mechanical compression, thermal annealing, Electrochemical Impedance spectroscopy.Abstract
The electrochemical behavior of composite electrodes used in Li ion batteries is influenced by factors such as microstructural characteristics (e.g. particle size, crystallinity, porosity etc.) and composition. For optimal performance of electrodes these factors are of utmost concern and serve as motivation for research in this field. In this report, we investigated LiFePO4 films synthesized by a novel plasma spray deposition method, which has capability for direct deposition of LiFePO4 films with carbon. This enables electrode characterizations to be carried out at the film level, without recourse to steps involving powder material handling. In this report microstructure and electrochemical properties of LiFePO4 films were investigated to elucidate their unique characteristics. Our studies show that factors such as porosity and microstructure of the films affect the electrochemical properties. The mechanical compression and thermal annealing experiments are shown to affect the electrochemical characteristics of LiFePO4 films. We show that annealing treatment leads to a drastic improvement in impedance and charge-discharge capacities for the LiFePO4 films. These treatments could serve to improve the electrode properties of porous film based materials for Li ion batteries and help us develop new film based materials for energy storage applications.
References
Tarascon JM, Armand M. Nature 2001; 414: 359. DOI: https://doi.org/10.1038/35104644
Hongwen H, Rui X, Jinxin F. Energies 2011; 4: 582. DOI: https://doi.org/10.3390/en4040582
Rui X, Hongwen H, FengChun S, Kai Z. Online Estimation of Peak Power Capability of Li-Ion Batteries in Electric Vehicles by a Hardware-in-Loop Approach. Energies 2012; 5: 1455. http://dx.doi.org/10.3390/en5051455 DOI: https://doi.org/10.3390/en5051455
Xuan Z, Ramesh G, Pravansu M. J Mater Chem A 2013; 1: 2757. DOI: https://doi.org/10.1039/c3ta01134h
Nagaswetha P, Ramesh G, Pranvansu M. Electrochem Acta 2011; 56: 9851. DOI: https://doi.org/10.1016/j.electacta.2011.08.070
Vikram V, Satishkumar BC, Jagit N, Pravansu M. J Power Sources 2011; 196: 10704. DOI: https://doi.org/10.1016/j.jpowsour.2011.09.016
Raghavender T, Ramesh G, Pranvansu M. J Power Sources 2012; 199: 270. DOI: https://doi.org/10.1016/j.jpowsour.2011.10.048
Zhang WJ. J Power Sources 2011; 196: 2962. DOI: https://doi.org/10.1016/j.jpowsour.2010.11.113
Shi ZC, Attia A, Ye WL, Wang Q, Li YX, Yang Y. Electrochem Acta 2008; 53: 2665. DOI: https://doi.org/10.1016/j.electacta.2007.06.079
Zhang SS, Xu K, Jow TR. Electrochem Acta 2004; 49: 1057. DOI: https://doi.org/10.1016/j.electacta.2003.10.016
Kimura A, et al, United States Patent 2010/0248025 A1, Electrolyte and secondary battery.
Tsui YC, Doyle C, Clyne TW. Biomaterials 1998; 19: 2015. DOI: https://doi.org/10.1016/S0142-9612(98)00103-3
Zhou, X, Siman R, Lu L, Mohanty P. Argon atmospheric plasma sprayed hydroxyapatite/Ti composite coating for biomedical applications. Surf Coat Technol 2012; 207: 343. http://dx.doi.org/10.1016/j.surfcoat.2012.07.009 DOI: https://doi.org/10.1016/j.surfcoat.2012.07.009
Takeuchi S, Ito M, Takeda K. Modelling of residual stress in plasma-sprayed coatings: Effect of substrate temperature. Surf Coat Technol 1990; 43/44: 426. http://dx.doi.org/10.1016/0257-8972(90)90094-S DOI: https://doi.org/10.1016/0257-8972(90)90094-S
Khor KA, Gu YW. Effects of residual stress on the performance of plasma sprayed functionally graded ZrO2/NiCoCrAlY coatings. Mater Sci Eng 2000; A277: 64. http://dx.doi.org/10.1016/S0921-5093(99)00565-1 DOI: https://doi.org/10.1016/S0921-5093(99)00565-1
Zhou X, Mohanty P. Electrochemical behavior of cold sprayed hydroxyapatite/titanium composite in Hanks’ solution. Electrochemica Acta 2000; 65: 134. http://dx.doi.org/10.1016/j.electacta.2012.01.018 DOI: https://doi.org/10.1016/j.electacta.2012.01.018
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