Abstract
The current literature generally reports the relationship between particle size and electrochemical performance of carbon-coated LiFePO4 (LFP). However, besides the factor of particle size, the quality of carbon coating will affect the electrochemical performance of LiFePO4 simultaneously. Logistically, each independent equation is solvable when it contains just one variable and is not solvable when it contains two or more variables. Therefore, we decide to study the relationship between particle size and electrochemical performance of uncoated LiFePO4, of which the relevant literature is sparse. To prepare samples within a wide range for average particle sizes, a traditional precipitation approach was employed to prepare the LFP materials with different average particle sizes of 30–500 nm. Carbon-coated LiFePO4 materials were prepared for the purpose of comparison studies. Both pristine LiFePO4 and carbon-coated LiFePO4 were investigated by XRD, FESEM, as well as charge/discharge testing (in the form of coin cells). The details of materials syntheses were discussed. Without the influence of carbon coating, the discharge capacity of pristine LiFePO4 exhibited a “volcano”-type relationship versus the average primary particle size in the size range of 50–500 nm and reaches a maximum value at the optimum size of about 200 nm. This finding may drive the development of power grade LFP cathode nanomaterials toward more precise particle size optimization.
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References
Alias N, Mohamad AA (2015) Advances of aqueous rechargeable lithium-ion battery: a review. J Power Sources 274:237–251
Bergeret G, Gallezot P, Ertl G, Knözinger H, Weitkamp J (1997) Handbook of heterogeneous catalysis, vol 2. VCH, Weinheim, pp 446–450
Chen J, Wang S, Whittingham MS (2007) Hydrothermal synthesis of cathode materials. J Power Sources 174:442–448
Cho YD, Fey GT, Kao HM (2009) The effect of carbon coating thickness on the capacity of LiFePO4/C composite cathodes. J Power Sources 189:256–262
Chueh WC, Gabaly FE, Sugar JD, Bartelt NC, McDaniel AH, Fenton KR, Zavadil KR, Tyliszczak T, Lai W, McCarty KF (2013) Intercalation pathway in many-particle LiFePO4 electrode revealed by nanoscale state-of-charge mapping. Nano Lett 13:866–872
Delacourt C, Poizot P, Levasseur S, Masquelier C (2006) Size effects on carbon-free LiFePO4 powders. Electrochem Solid-State Lett 9:A352–A355
Ferrari S, Lavall RL, Capsoni D, Quartarone E, Magistris A, Mustarelli P, Canton P (2010) Influence of particle size and crystal orientation on the electrochemical behavior of carbon-coated LiFePO4. J Phys Chem C 114:12598–12603
Gaberscek M, Dominko R, Jamnik J (2007) Is small particle size more important than carbon coating? An example study on LiFePO4 cathodes. Electrochem Commun 9:2778–2783
Gibot P, Casas-Cabanas M, Laffont L, Levasseur S, Carlach P, Hamelet S, Tarascon JM, Masquelier C (2008) Room-temperature single-phase Li insertion/extraction in nanoscale LixFePO4. Nat Mater 7:741–747
Goodenough JB, Kim Y (2010) Challenges for rechargeable Li batteries. Chem Mater 22:587–603
Jugović D, Uskoković D (2009) A review of recent developments in the synthesis procedures of lithium iron phosphate powders. J Power Sources 190:538–544
Li S, Liu X, Mi R, Liu H, Li Y, Lau W, Mei J (2014) A facile route to modify ferrous phosphate and its use as an iron-containing resource for LiFePO4 via a polyol process. ACS Appl Mater Interfaces 6:9449–9457
Liu T, Zhao L, Wang D, Zhu J, Wang B, Guo C (2014a) Carbon-coated single-crystalline LiFePO4 nanocomposites for high-power Li-ion batteries: the impact of minimization of the precursor particle size. RSC Adv 4:10067–10075
Liu Z, Li J, Xing Y, Wang L, Fang S, Xu B, Qu X (2014b) LiFePO4/C composites derived from precipitated FePO4 precursor: effects of mixing processes. Ionics 20:1511–1516
Ma Z, Shao G, Fan Y, Wang G, Song J, Liu T (2014) Tunable morphology synthesis of LiFePO4 nanoparticles as cathode materials for lithium ion batteries. ACS Appl Mater Interfaces 6:9236–9244
Malik R, Abdellahi A, Ceder G (2013) A critical review of the Li insertion mechanisms in LiFePO4 electrodes. J Electrochem Soc 160:A3179–A3197
Meethong N, Huang HYS, Carter WC, Chiang YM (2007) Size-dependent lithium miscibility gap in nanoscale Li1-xFePO4. Electrochem Solid-State Lett 10:A134–A138
Nan C, Lu J, Li L, Li L, Peng Q, Li Y (2013) Size and shape control of LiFePO4 nanocrystals for better lithium ion battery cathode materials. Nano Res 6:469–477
Paxton WA, Zhong Z, Tsakalakos T (2015) Tracking inhomogeneity in high-capacity lithium iron phosphate batteries. J Power Sources 275:429–434
Ravet N, Chouinard Y, Magnan JF, Besner S, Gauthier M, Armand M (2001) Electroactivity of natural and synthetic triphylite. J Power Sources 97–98:503–507
Ravnsbaek DB, Xiang K, Xing W, Borkiewicz OJ, Wiaderek KM, Gionet P, Chapman KW, Chupas PJ, Chiang YM (2014) Extended solid solutions and coherent transformations in nanoscale olivine cathodes. Nano Lett 14:1484–1491
Ressler T, Kniep BL, Kasatkin I, Schlogl R (2005) The microstructure of copper zinc oxide catalysts: bridging the materials gap. Angew Chem Int Ed 44:4704–4707
Robert D, Douillard T, Boulineau A, Brunetti G, Nowakowski P, Venet D, Bayle-Guillemaud P, Cayron C (2013) Multiscale phase mapping of LiFePO4-based electrodes by transmission electron microscopy and electron forward scattering diffraction. ACS Nano 7:10887–10894
Shahid R, Murugavel S (2013) Synthesis and characterization of olivine phosphate cathode material with different particle sizes for rechargeable lithium-ion batteries. Mater Chem Phys 140:659–664
Striebel KA, Shim J, Srinivasan V, Newman J (2005) Comparison of LiFePO4 from different sources. J Electrochem Soc 152:A664–A670
Varzi A, Ramirez-Castro C, Balducci A, Passerini S (2015) Performance and kinetics of LiFePO4–carbon bi-material electrodes for hybrid devices: a comparative study between activated carbon and multi-walled carbon nanotubes. J Power Sources 273:1016–1022
Wang J, Sun X (2012) Understanding and recent development of carbon coating on LiFePO4 cathode materials for lithium-ion batteries. Energy Environ Sci 5:5163–5185
Wang J, Tang Y, Yang J, Li R, Liang G, Sun X (2013) Nature of LiFePO4 aging process: roles of impurity phases. J Power Sources 238:454–463
Xing Y, Liu Z, Suib SL (2007) Inorganic synthesis for the stabilization of nanoparticles: application to Cu/Al2O3 nanocomposite materials. Chem Mater 19:4820–4826
Xing Y, Liu Z, Gomez S, Suib SL (2008) Tuning of texture and structure of copper-containing nanocomposite oxide materials. J Phys Chem C 112:1446–1454
Zaghib K, Mauger A, Groult H, Goodenough JB, Julien CM (2013) Advanced electrodes for high power Li-ion batteries. Materials 6:1028–1049
Zhao Y, Peng L, Liu B, Yu G (2014) Single-crystalline LiFePO4 nanosheets for high-rate Li-ion batteries. Nano Lett 14:2849–2853
Acknowledgments
We thank the projects sponsored by Henan Provincial Foundation for University Youth Key Faculty (2013GGJS-112), Henan Provincial Scientific Research Foundation for the Returned Overseas Scholars, Zhengzhou Science & Technology Project (10PTGG381-2), and Research Funding for Ph.D. Faculty of Zhengzhou University of Light Industry.
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Liu, Z., Xu, B., Xing, Y. et al. Determination of the relationship between particle size and electrochemical performance of uncoated LiFePO4 materials. J Nanopart Res 17, 163 (2015). https://doi.org/10.1007/s11051-015-2969-6
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DOI: https://doi.org/10.1007/s11051-015-2969-6