Lithium-ion insertion kinetics of Nb-doped LiMn2O4 positive-electrode material
Source abstract
Abstract
Abstract Nb-doped LiMn2O4 materials were synthesized by a solid state process, and the structure and kinetic performance were characterized by TG-DTA, XRD, SEM, CV, and EIS. TG-DTA shows that the decomposition reaction has almost completed and all reactions have finished at the temperature of 590 °C. XRD indicates that the all samples are in accordance with the standard spinel LiMn2O4. However, it can be found that little Nb5+ ions do not completely substitute Mn3+ ions of LiMn2−1.667xNbxO4 (x=0.02, 0.03, 0.04). SEM reveals that the average particle size of all samples is about 1 μm. CV exhibits that the improved reversibility and dynamic behaviors of LiMn2O4 can be attributed to the Nb doping. EIS demonstrates that Nb doping decreases the charge transfer resistance of LiMn2O4, and then reduces the cell impedance. Nb doping results in lower electrode polarization and a high lithium ion diffusion coefficient, and can effectively improve the kinetic performance of LiMn2O4.
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Research context
OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies
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References (31)
Show source-provided references
1. A hierarchical porous carbon material for high power, lithium ion batteries10.1016/j.electacta.2011.07.047 ↗
2. Developments in nanostructured cathode materials for high-performance lithium-ion batteries10.1002/adma.200702242 ↗
3. Nanostructured electrode materials for electrochemical energy storage and conversion10.1039/b811802g ↗
4. Relationship between the electrochemical and particle properties of LiMn2O4 prepared by ultrasonic spray pyrolysis10.1016/j.jpowsour.2004.01.019 ↗
5. Research progress in high voltage spinel LiNi0.5Mn1.5O4 material10.1016/j.jpowsour.2010.03.067 ↗
6. Dissolution behavior of chromium-ion doped spinel lithium manganate at elevated temperatures10.1016/S0378-7753(03)00213-1 ↗
7. Structural and electrochemical study of cobalt doped LiMn2O4 spinels10.1016/S0167-2738(02)00194-7 ↗
8. Electrochemical performance of Al-doped LiMn2O4 prepared by different methods in solid-state reaction10.1016/j.jpowsour.2007.01.035 ↗
9. Synthesis and electrochemical properties of non-stoichiometric Li–Mn-spinel (Li1.02MxMn1.95O4−yFy) for lithium ion battery application10.1016/j.electacta.2011.11.090 ↗
10. Nano-sized LiMn2O4 spinel cathode materials exhibiting high rate discharge capability for lithium-ion batteries10.1016/j.jpowsour.2011.03.081 ↗
11. High rate micron-sized niobium-doped LiMn1.5Ni0.5O4 as ultra high power positive-electrode material for lithium-ion batteries10.1016/j.jpowsour.2012.03.095 ↗
12. Synthesis and electrochemical properties of Nb-doped Li3V2(PO4)3/C cathode materials for lithium-ion batteries10.1016/j.mseb.2011.02.006 ↗
13. Characterization of nanoparticles of LiMn2O4 synthesized by citric acid sol–gel method10.1016/S0378-7753(01)00635-8 ↗
14. Preparation and characterization of LiMn2O4 powders by the emulsion drying method10.1016/S0378-7753(99)00286-4 ↗
15. Electrochemical properties of LiCoyMn2−yO4 synthesized using a combustion method in a voltage range of 3.5–5.0V10.1016/j.ceramint.2011.03.071 ↗
16. Synthesis of spinel LiMn2O4 nanoparticles through one-step hydrothermal reaction10.1016/j.jpowsour.2007.07.039 ↗
17. Electrochemical properties of LiMn2O4 synthesized by the microwave-induced combustion method10.1016/j.ceramint.2003.12.183 ↗
18. Kinetic study on LiFePO4-positive electrode material of lithium-ion battery10.1007/s11581-011-0523-9 ↗
19. The role of structural and electronic alterations on the lithium diffusion in LixCo0.5Ni0.5O210.1016/j.electacta.2004.03.001 ↗
20. The effect of particle size and morphology on the rate capability of 4.7V LiMn1.5+δNi0.5−δO4 spinel lithium-ion battery cathodes10.1016/j.electacta.2007.12.057 ↗
21. Investigation on diffusion behavior of Li+ in LiFePO4 by capacity intermittent titration technique (CITT)10.1016/j.electacta.2008.10.065 ↗
22. Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS10.1016/j.electacta.2011.02.119 ↗
23. Symmetric cell approach and impedance spectroscopy of high power lithium-ion batteries10.1016/S0378-7753(00)00666-2 ↗
24. Novel synthesis and electrochemical behavior of layered LiNi0.5Mn0.5O210.1016/j.jallcom.2006.02.097 ↗
25. New investigation of fluorine-substituted spinel LiMn2O4−xFx by using sol–gel process10.1016/j.jpowsour.2004.12.006 ↗
26. Enhanced electrochemical stability of Al-doped LiMn2O4 synthesized by a polymer-pyrolysis method10.1016/j.electacta.2008.07.037 ↗
27. Understanding the improvement in the electrochemical properties of surface modified 5V LiMn1.42Ni0.42Co0.16O4 spinel cathodes in lithium-ion cells10.1021/cm9000043 ↗
28. Electrochemical behaviour of tin borophosphate negative electrodes for energy storage systems10.1016/j.jpowsour.2008.08.042 ↗
29. Effect of polypyrrole on improving electrochemical performance of silicon based anode materials10.1016/j.electacta.2012.03.098 ↗
30. One-step solid-state synthesis and electrochemical performance of Nb-doped LiFePO4/C10.1016/S1872-1508(06)60037-5 ↗
31. Study of electrochemical properties of coating ZrO2 on LiCoO210.1016/j.jallcom.2010.02.091 ↗