Inorganic Chemicals Industry >
Preparation and properties of spherical LiMnPO4/C cathode materials by spray drying method
Received date: 2020-08-06
Online published: 2021-01-08
One-time spray-drying method was used to prepare spherical LiMnPO4/C cathode materials with lithium hydroxide,manganese acetate,NH4H2PO4 and polyethylene glycol as raw materials.The effect of calcination temperature on the morpho-logy,structure and electrochemical performance of spherical LiMnPO4/C samples was studied.Its structure and morphology were characterized by X-ray diffraction（XRD）and field emission scanning electron microscopy（SEM）.The morphology and prechemical properties of LiMnPO4/C obtained after calcination at different temperatures are quite different.The results showed that the spherical LiMnPO4/C calcined at 700 ℃ had olivine-type crystal structure,and it showed a spherical shape composed of one-dimensional nano particles with a diameter of about 50 nm under SEM.The specific discharge capacity of this sample reached 148 mA·h/g for the first time at a rate of 0.1C at room temperature.After 80 cycles,the specific discharge capacity was still around 140 mA·h/g,and the capacity retention rate was 94.6%.
Key words： lithium-ion batteries; cathode material; LiMnPO4; spray drying method
Kai Zhang , Ao Jiang . Preparation and properties of spherical LiMnPO4/C cathode materials by spray drying method[J]. Inorganic Chemicals Industry, 2021 , 53(1) : 54 -58 . DOI: 10.11962/1006-4990.2020-0101
| [1] | Delacourt C, Laffont L, Bouchet R, et al. Toward understanding of electrical limitations(electronic,ionic) in LiMPO4(M=Fe,Mn) el-ectrode materials[J]. Journal of the Electrochemical Society, 2005,152(5):A913-A921. |
| [2] | Padhi A K, Nanjundaswamy K S, Goodenough J B. Phospho-olivines as positive-electrode materials for rechargedeadle lithiu batteries[J]. Journal of the Electrochemical Society, 1997,144(4):1188-1194. |
| [3] | Yang C, Wang X, Liu G, et al. One-step hydrothermal synjournal of Ni-Co sulfide on Ni foam as a binder-free electrode for lithium-sulfur batteries[J]. Journal of Colloid and Interface Science, 2020,565(1):378-387. |
| [4] | Padhi A K, Nanjundaswamy K S, Masquelier C, et al. Effect of struc-ture on the Fe2+/Fe3+ redox couple in iron phosphates[J]. Journal of the Electrochemical Society, 1997,144(5):1609-1613. |
| [5] | Yin S C, Grondey H, Strobel P, et al. Electrochemical property:St-ructure relationships in monoclinic Li3-yV2(PO4)3[J]. ChemInform, 2003,125(34):10402-10411. |
| [6] | Deng C, Zhang S, Ma L, et al. Effects of precipitator on the morpho-logical,structural and electrochemical characteristics of Li[Ni1/3Co1/3Mn1/3]O2 prepared via carbonate co-precipitation[J]. Jo-urnal of Alloys and Compounds, 2011,509(4):1322-1327. |
| [7] | Yang S Y, Wang X Y, Yang X K, et al. Influence of Li source on tap density and high rate cycling performance of spherical Li[Ni1/3Co1/3Mn1/3]O2 for advanced lithium-ion batteries[J]. Journal of Solid State Electrochemistry, 2012,16(3):1229-1237. |
| [8] | Wang L, Zhang L, Lieberwirth I, et al. A Li3V2(PO4)3/C thin film with high rate capability as a cathode material for lithium-ion batteries[J]. Electrochemistry Communications, 2010,12(1):52-55. |
| [9] | Malik R, Burch D, Bazant M, et al. Particle size dependence of the ionic diffusivity[J]. Nano Letters, 2010,10(10):4123-4127. |
| [10] | Kang B, Ceder G. Battery materials for ultrafast charging and disc-harging[J]. Nature, 2009,458(7235):190-193. |
| [11] | Wang L, He X, Sun W, et al. Crystal orientation tuning of LiFePO4 nanoplates for high rate lithium battery cathode materials[J]. Nano Letters, 2012,12(11):5632-5636. |
| [12] | Padhi A K, Archibald W B, Nanjundaswamy K S, et al. Ambient and high-pressure structures of LiMnVO4 and its Mn3+/Mn2+ redox en-ergy[J]. Journal of Solid State Chemistry, 1997,128(2):267-272. |
| [13] | Wei Y J, Liang G C, Wang L, et al. Synjournal and electrochemical performance of LiFe1-xMnxPO4/C cathode material[J]. Advanced Materials Research, 2011,347-353(1):3434-3438. |
| [14] | Jiang A, Wang X, Gao M, et al. Enhancement of electrochemical properties of niobium-doped LiFePO4/C synthesized by sol-gel met-hod[J]. Journal of the Chinese Chemical Society, 2018,65(8):977-981. |
| [15] | Zhou F, Zhu P, Fu X, et al. Comparative study of LiMnPO4 cathode materials synthesized by solvothermal methods using different manganese salts[J]. CrystEngComm, 2013,16(5):766-774. |
| [16] | Wang X, Zhao X, Wang J, et al. Electrospun Li3V2(PO4)3 nanobel-ts:synjournal and electrochemical properties as cathode materials of lithium-ion batteries[J]. Journal of the Chinese Chemical Socie-ty, 2017,64(5):97-104. |
| [17] | Hu P, Zhong K, Zhang C, et al. Spray drying synjournal and electro-chemical performance of lithium ion battery cathode materials LiNi0.5Mn1.5O4[J]. Journal of Synthetic Crystals, 2015,44(8):2184-2190. |
| [18] | Wang Y, Wang X, Jiang A, et al. A versatile nitrogen-doped carbon coating strategy to improve the electrochemical performance of LiFePO4 cathodes for lithium-ion batteries[J]. Journal of Alloys and Compounds, 2019,810(25):151889. |
| [19] | Doan T N L, Bakenov Z, Taniguchi I. Preparation of carbon coated LiMnPO4 powders by a combination of spray pyrolysis with dry ball-milling followed by heat treatment[J]. Advanced Powder Te-chnology, 2010,21(2):187-196. |
| [20] | Fan L, Wu L, Guan M, et al. Preparation of LiFe(1-3y/2)AlyPO4 cathode material by precursor-doping combined room temperature reduc-tion via ball-milling[J]. The Chinese Journal of Nonferrous Metals, 2014,24(2):468-475. |
/
| 〈 |
|
〉 |